356 ORISMOLOGY. 



intirely to separate them. Ex. The Petalocerous 



beetles^ Hymenoptera^ &c. 

 3. MONOMEROUS (Monomerus). When it consists of 



only one joint. Ex. Coleoptera, &c. 

 4<. DIMEROUS (Dimerus). When it consists of two 



joints. Ex. Ichneumon. 





 G. Thigh (Femur.) 



1. SIMPLE (Simplex). When it is no where particu- 



larly thick. 



2. INCRASSATE (Incrassatum). When it is very thick, 



either partially or generally, and formed for leap- 

 ing. Ex. Haltica, &c. 



3. LORICATE (Loricatum). When the disk of the thigh 



appears covered with a double series of oblique 

 scales like a coat of mail. Ex. Locusta. PLATE 

 XIV. FIG. 5. 



//. Shank (Tibia). 



1 . ALATE (Alata). When the posterior tibia on each 



side is furnished with a dilated process which pro- 

 bably assists it in flight. Ex. Petalopus phyllopus, 

 &c. PLATE XV. FIG. 2. a. 



2. FOLIACEOUS (Foliacea). When the tibia is late- 



rally dilated into a thin plate for carrying pollen. 

 Ex. Euglossa cordata, &c. 



3. CORBICULATE (Corbiculata). When it is fringed 



with incurved hairs calculated for carrying knead- 

 ed pollen. Ex. Apis 9 Bombus a . 



4. SCOPATE (Scopata). When it is quite covered with 



a brush of hairs with which it brushes off the 

 a Man. Ap. Angl. i, t. xii./. 19. a, b. 



