USED IN ENTOMOLOGY. 6 1 



marked difference between the stages: specifically the Ephemerida, Odonata 

 and Perlida. 



Hemiptera: half-winged: an ordinal term applied to insects in which the 

 mouth parts consist of four lancets inclosed in a jointed beak or rostrum ; 

 metamorphosis incomplete: the primaries may be of uniform texture through- 

 out (Homoptera) or may be thickened at base, membranous at tip (Hctcr- 

 optera). 



Hemispheric: like the half of a globe or sphere. 



Hepaticolor: liver-brown [dragon's blood]. 



Hepatic pouches: applied to crecal pouches; q. v. 



Herbivorous: feeding upon plant tissue: a leaf feeder. 



Heremetabola: with slight or incomplete metamorphosis, but with a resting 

 stage at the end of the nymph life : specifically the Cicadidce. 



Hermaphrodite: an individual in which the characters of both sexes are com- 

 bined. 



Hetero: as a prefix, unequal; different from. 



Heterocera: Lepidoptera in which the antenna? are of any form other than 

 clubbed at tip : opposed to Rhopalocera. 



Heterochrome: of different color: applied to species in which there are two 

 color forms of one sex, one of which is like (homceochrome), the opposite 

 sex, as in certain Odonata and Lepidoptera. 



Heterochrony: an irregular development in point of time, a later stage be- 

 coming evident before one that is earlier in ordinary course. 



Heterogamy: applied to those cases in which two sexual or a sexual and 

 parthenogenetic generation alternate. 



Heterogeneous: a mixture of different forms; abnormal. 



Heterogeny: the alternation of sexual and parthenogenetic generations. 



Heterogyna: the ants: referring to the different kinds of females, — queens and 

 workers, — as distinguished from males. 



Heteromera: Colcoptcra in which the anterior and middle tarsi are 5-jointed 

 and the posterior are 4-jointed. 



Heteromerous: having an unequal number of tarsal joints on the feet. 



Heterometabola: differing among themselves in metamorphosis; but not 

 manifesting abrupt stages. 



Heteromorphous: the metamorphosis complete, in abrupt stages, the larva 

 unlike the adult. 



Heteronomous: if two parts, compared with each other, are of different qual- 

 ity : differing in development or function. 



Heteropalpi: palpi with a different number of joints in male and female, as 

 in some Trichoptcra. 



Heteroptera: an ordinal term applied to that series of Hemiptera in which 

 the anterior wings differ in texture from the posterior, and the different 

 regions of primaries differ in texture. 



Heteropterous: with wings of different texture in diffen nl parts. 



Heterotypical: a genus, described from more than one species, these differing 

 in structure. 



Hexachastous: Diptera in which the mouth structures have six piercing seta 1 . 



