- A pylon, or mark-tower, on the flying track
Air-racing, as made popular by the proprietors of the Hendon aerodrome, forms so fascinating a sight that, on a day of public holiday, as many as 50,000 people will assemble in the enclosures. To stand near one of the pylons—wooden towers which mark the turning-points of the course—and see the air-racers come rushing by, is to gain such an impression of speed as almost makes the watcher hold his breath. The pilot in a flying race has one chief aim: to fly the shortest way. Every fraction of a second is of importance; and if he can circle the pylons more skilfully than his rivals, he may win the race, even though his machine—in its actual speed—may be no faster than theirs. - Simulium venustum
The Simuliidæ, or black flies, are small, dark, or black flies, with a stout body and a hump-back appearance. The antennæ are short but eleven-segmented, the wings broad, without scales or hairs, and with the anterior veins stout but the others very weak. The mouth-parts are fitted for biting. - Sepsis violacea; puparium and adult
Sepsis violacea; puparium and adult - Section through a venom gland of Latrodectus 13-guttatus showing the peritoneal, muscular and epithelial layers
- Sarcoptes scabiei. Diagrammatic representation of the course in the skin of man
- Sarcoptes scabiei, male
- Sarcoptes scabiei, female
- Salivary glands of Notonecta maculata
- Reduvius (Opsicœtus) personatus
- Rasahus biguttatus
- Poison apparatus of a honey bee
- Piophila casei
- Pediculus showing the blind sac (b) containing the mouth parts (a) beneath the alimentary canal (p)
- Pediculoides ventricosus, female
- Otiobius (Ornithodoros) megnini, male. (a) dorsal, (b) ventral aspect
- Otiobius (Ornithodoros) megnini, head of nymph
- Notœdres cati, male and female
- Muscina stabulan
- Mandible of Scolopendra cingulata showing venom gland
- Lucilia cæsar
- Linguatula. (a) larva; (enlarged). (b) adult; (natural size)
- Life cycle of the malarial parasite
- Left spiracle of nymph of Argas persicus
- Left hand stigmata of the larvæ of muscoidea
- Larva of Simulium
- Larva of Fannia scalaris
- Larva of Anopheles
- Ixodes ricinus; male, ventral aspect
- Head of a spider showing poison gland (c) and its relation to the chelicera (a)
- Head and pronotum of (a) dog flea; (b) of cat flea; (c) of hen flea (d) Nycteridiphilus (Ischnopsyllus) hexactenus
- Xenopsylla cheopis, male
- Two common centipedes
- The yellow fever mosquito (Aëdes calopus)
- The Italian tarantula
- The cattle tick (Boophilus annulatus). (a) Female; (b) male
- Sting of a honey bee
- Some early medical entomology
- Dog flea
- Dipylidium caninum. The double pored tapeworm of the dog
- Dipylidium caninum. Rostrum evaginated and invaginated
- Dermanyssus gallinæ, female
- Harvest mites. (Larvæ of Trombidium)
- Epithelium underlying poison hairs of the larva of the browntail moth
- Epithelium underlying poison hairs of the larva of the browntail moth (larger scale)
- Eggs of Anopheles
- Echidnophaga gallinacea
- Cordylobia anthropophaga
- Conorhinus sanguisugus
- Conorhinus abdominalis
- Chrysomyia macellaria
- Calliphora erythrocephala
- Demodex folliculorum
- Dancing Mania
- Culicoides guttipennis - (a) adult, (×15) (b) head of same (c) larva (d) head (e) pupa
- Culex sollicitans. Female
- Cross section of the larva of the browntail moth showing the tubercles bearing the poison hairs
- Beak of hemipteron
Several families of the true bugs include forms which, while normally inoffensive, are capable of inflicting painful wounds on man. In these, as in all of the Hemiptera, the mouth-parts are modified to form an organ for piercing and sucking. The upper lip, or labrum, is much reduced and immovable, the lower lip, or labium, is elongated to form a jointed sheath, within which the lance-like mandibles and maxillæ are enclosed. The mandibles are more or less deeply serrated, depending on the species concerned. - Auchmeromyia luteola
Auchmeromyia luteola, the Congo floor maggot. This is a muscid of grewsome habits, which has a wide distribution throughout Africa. The fly deposits its eggs on the ground of the huts of the natives. - Argus persicus. Capitulum of male
Until recently, the ticks attracted comparatively little attention from entomologists. Since their importance as carriers of disease has been established, interest in the group has been enormously stimulated and now they `rank` second only to the mosquitoes in the amount of detailed study that has been devoted to them. The ticks are the largest of the Acarina. They are characterized by the fact that the hypostome, or "tongue" is large and file-like, roughened by sharp teeth. - Anopheles quadrimaculatus mosquito
Anopheles quadrimaculatus mosquito, male and female