354 GLOSSARY 



Coxa. The hip or hip joint. In insects and other arthropods the first segment of 

 the leg from the body, articulating with the second segment or trochanter. 



Cystogenous. Producing or bearing cells. 



Cytozoic. Pertaining to parasites which live within the cell cytoplasm. 



Dentate. Having a toothed margin or tooth-like projections. 



Denticulate. Having very small tooth-like projections. 



Dimorphism. The pi'operty of assuming or of existing under two distinct forms. 



Dipterous. Having two wings; belonging to the insect order Diptera. 



Dorsum. The dorsal surface or back of an animal. 



Ecdysis. The process of casting the skin; molting. 



Elytra. The fore-wings of beetles, serving to cover the hind wings. 



Enterozoic. Pertaining to parasites which live in the lumen of the digestive tract. 



Epimeron. One of the side-pieces in the segment of an arthropod animal. 



Facet. A smooth, flat, circumscribed surface. 



Fauna. The aggregate of the animals of a given region or geological period. 



Femur. The thigh bone. The third segment of the leg of an insect, articulating 

 proximally with the trochanter and distally with the tibia. 



Filiform. Thread-like. 



Fission. Reproduction by division of the body into two parts, each of wliich be- 

 comes a complete organism. 



Flagellum. A whip-like appendage or process of a cell. 



Flora. The aggregate of the native plants of a given region or period. 



Gamete. A sexual cell or germ cell. 



Gametocyte. An adult parasite, as in the Plasmodium of malaria, when in its 

 reproductive form. 



Granular. Consisting of grains or granules. 



Gregarious. Inclined to gather together, as to live in flocks or herds. 



Habitat. The natural abode of an animal or plant. 



Halteres. The rudimentary hind wings of Diptera; balancers. 



Haustellum. A proboscis adapted to take food by suction, as in many insects. 



Hematozoic. Pertaining to parasites which live in the blood. 



Hemelytra. The partially thickened anterior wings of certain insects. 



Hermaphroditism. The union of the two sexes in the same individual. 



Hexacanth. The sLx-hooked tapeworm embryo; the onchosphere. 



Hexapod. A six-footed animal; a true insect. 



Hyaline. A glassy or transparent substance or surface. 



Imago. The final or adult stage of insects. 



Infundibuliform. Having the form of a funnel. 



Labium. In insects, the lower lip, formed by the second pair of maxillae. 



Labrum. In insects, the upper lip. 



Lobe. A somewhat rounded projection or division of an organ or part. 



Macrogamete. The large female gamete or germ cell. 



Macrogametocyte. The female gametocyte. 



Mandibles. In arthropods, the anterior pair of mouth parts which form biting jaws. 



Marine. Living in the sea. 



Maxillae. In arthropods, paired appendages behind the mandibles, usually serving 

 as accessoiy jaws. 



Merozoites. Asexually formed spores of the malaria parasite. 



