62 EXPLANATION OF TERMS 



Hexanephric: with six kidneys, or structures serving as such. 



Hexapoda: tracheate arthropods with head, thorax and abdomen distinct, and 



only six legs in the adult stage : the true insects. 

 Hexapodal -ous: provided with six feet. 

 Hians: gaping. 

 Hibernaculum: a tent or sheath made out of a leaf or other material in which 



a larva hides or hibernates. 

 Hibernate: to pass the winter in a dormant condition. 

 Hicks' bottles: flask-shaped pits or depressions in the antenna of bees and 



ants ; supposed to be the organs of hearing. 

 Hind angle: in primaries of Lepidoptera, is that point where inner and outer 



margin meet : — anal angle of secondaries. 

 Hind-body: the abdomen. 

 Hind-gut: the intestinal canal from the end of chylific ventricle to the anus. 



including the malpighian tubules and anal glands. 

 Hind-head: Mallophaga ; that part of head behind mandibles and antennae. 

 Hind-intestine: = hind-gut. 

 Hinge: of maxilla = cardo ; q. v.: the point of articulation of a movable 



joint. 

 Hips: the coxa ; q. v. 



Hirsute: clothed with long, strong hair; shaggy. 

 Hispid: bristly: sparsely set with short, stiff hair. 



Histoblast: the morphological unit or cell characteristic of a particular tissue. 

 Histogenesis: the formation and development of tissue. 

 Histolysis: the degeneration and dissolution of organic tissue. 

 Hoary: covered with a fine, white, silvery pubescence : pruinose. 

 Holometabolous: having a complete transformation ; with egg, larval, pupal 



and adult stages distinctly separated. 

 Holopneustic: having many pairs of open stigmata. 

 Holoptic: Diptera in which the eyes of male are contiguous between vertex 



and antennae : see dichoptic. 

 Holosericeus: with short, dense, silky hair, giving a satiny lustre. 

 Holotype: the unique type: = type : q. v. 

 Homelytra: elytra of similar or equal substance. 

 Homo: prefix = the same; similar. 

 Homochronous: changes in an organism which appear in the offspring at the 



same age at which they did in the parent. 

 Homochronic heredity: inheritance at corresponding periods of life. 

 Homodynamous: serially homologous: homology of the metameres. 

 Homoeochromatism: applied when over a given region many butterflies tend 



to vary similarly as regards color. 

 Homoeochrome: of the same color: see heterochrome. 



Homoeomerous: all feet with an equal number of tarsal joints: =isomer<>us. 

 Homoeonomous: of the same substance or texture. 

 Homoetype: = homotype ; q. v. 



Homogeneous: of the same kind or nature; similar in texture or parts. 

 Homogenous: similar in structure due to a community of descent. 



