Mr. Q. R. Waterhouse on Coleopterous Larvce. 27 



enabled to walk, although inclosed within the pupa-case, which, by 

 the by, is extremely thin. Upon exposing the pupa to the light, it 

 would immediately commence biting the bits of wood beneath it, 

 and make considerable exertions to conceal itself; upon which occa- 

 sions it sometimes used the two fore legs slightly. It must be ob- 

 served, however, that although the other parts of the pupa are com- 

 paratively weak, the jaws are strong, and of a dark colour, showing 

 that they are not meant to be idle during this state. 



I am of opinion that the pupa in its natural state makes its way 

 out of the bark of tlie tree, just before it turns to the perfect insect, 

 which would account for its being able to walk at that time ; for if 

 the pupa were to change within the bark, the perfect insect, with its 

 delicate gauze wings, would be much troubled to get out without 

 damaging them. Hence the accounts of this little animal put us 

 in mind of the story of the Cameleon, where all are right, and all are 

 wrong. 



1 Ic. The pupa of the male, magnified. 1 /. Part of the abdomen of the fe- 



malcj sliowing the position of the ovipositor. 



VI. Descriptions of the Larvcc and Pupce of various species 

 of Coleopterous Insects. By G. R. Waterhouse, Ksq.y 

 Curator of the Entomological Society. 



[Read January G, 1831.] 



Eryx (Stephens) niger, De Geer. 

 Larva, Plate IV. fig. 1. 



Yellowish white. Head ochreous, corneous. Body elongate, cy- 

 lindrical, subcoriaceous, 12-jointed. 

 Length 10 lines. 



Head rotundate, slightly depressed, smooth with a V-shaped groove 

 commencing at the base of the clypeus and converging towards, 

 but not quite reaching, the prothorax. Antennce 4-jointed, basal 

 joint short ; two intermediate joints cylindrical ; terminal joint 

 minute, and placed in a cup-like cavity at the apex of the third 

 joint. Lahrum transverse, rounded at the sides, and truncated 

 anteriorly, the exterior margins furnished with bristly hairs, 

 Ligula minute and conical. Paljnger short, divided anteriorly 

 into two lobes, to which are attached the labial palpi, which 

 are 2-jointed ; basal joint short and cylindrical ; terminal joint 



