EXTERNAL ANATOMY OF INSECTs. 385 
a. Ca.x (the Heel). The curving part of the Planta, 
by which it inosculates with the Z%dza. 
B. Diettus (the Toe). The remaining joints of the Tar- 
sus taken together ?. It includes the Allua and Un- 
gula. 
ALLux (the Zove-ball). The last joint but one of the 
Tarsus, when’ remarkable, as in Rhyncophorous 
beetles (Curculio L.) >. 
Uneuta (the Claw-joint). The last joint of the Tarsus, 
which bears the claws *. It includes the Arthrium, 
Unguiculi, and Plantula. 
a. ARTHRIUM (the Arthrium). <A very minute joint at 
the base of the claw-joint, in most Tetramerous and 
Trimerous beetles ¢. 
8. Uneuicu.t (the Claws). One or two pair of moveable 
incurved claws, which usually arm the apex of the 
Ungula °. 
y. Pranruta (the Plantula). A minute accessory joint, 
sometimes attached within the claws to the apex of 
the Ungula ‘.—Ex. The Lucanida@. It includes the 
Pseudonychia. 
*, PsEuponycuia (the Spurious Claws). Two stiff claw- 
like bristles, that terminate the Plantula &. 
C. Sorea (the Sole). The underside of the Tarsus *. It 
includes the Pulvilli. 
a. Puxvit1t (the Foot-cushions). Cushions of short hairs 
very closely set; or of membrane, capable of being 
S 
= 
* Prate XXVII. Fic. 25, 26. 2". 
® Prate XXVI. Fic. 47, 48. and XXVIII. Fic. 43. 7. 
© Tbid. s*. 4 Prate XXVI. Fic. 47, 48.d*. 
¢ Prate XXVII; Fie. 37—57. e*. f Ibid. Fic. 56, 57. f*. 
® Ibid. Fic. 56. a y. h Ibid. Fic. 59.4", 
VOL. III. 2¢ 
