1919.] 215 



The pupa is a yellowish-brown (burnt sienna) colour about the thorax, the 

 abdomen being lighter. On the prothorax the three 'horns' are quite noticeable, 

 the cephalic one being best developed and standing out about | inch. The elytra 

 are thick and bent under, almost covering the underwings. A fine median ridge 

 extends down the thorax. A double row of very large spiracles dov^^n the 

 centre of the abdomen. These spiracles are very noticeable objects, there being 

 apparently tw^o pairs to each segment except the 1st, 6th, 7th, and 8th, where 

 there are but a single pair. They lie adjacent except on the 8th segment 

 ■where they are about | inch apart. The claspers are large and bear a dark 

 brown piliferous area on the dorsum. The head is slightly bent under the 

 thorax, the mouth-parts being well formed. On the underside the strong legs 

 are, however, the most noticeable. The first pair are brought close up .against 

 the head, while the second pair lie partly over the wing-cases. Where the 

 femora of these two pairs of legs meet they form a raised circular area. The 

 third pair extends from beneath the second pair of wings, which, on the 

 underside, are about | inch longer than the elytra. On the tibiae of the first 

 pair there are four teeth, and while the iecoud pair of tibiae also possess these 

 they are very poorly developed. The underside of the abdomen is pale 

 yellowish, being darker between the segments. There is a very distinct woody 

 odour about the pupa." 



The larvae must live for a considerable time. They are occasionally 

 eaten by the Aboriginal Indians of the Colony. 



S. jugurtha Burm. — An uncommon species from the interior. 

 Bartica, Essequibo R. 



JPkileiirus q^iadrituherculafus P.deB. — Paraweeka Ck., Essequibo R. 



P. valgus Linn. — On two occasions this beetle has been taken from 

 coconut palms, one of which was suffering from "Bud Rot." Occurs also 

 in the interior districts. 



P. didymus Linn. — Issororo, N.W.D. 



Gyclocepliala suhsignata Burm. — Paraweeka Ck., Essequibo R. 



C. ovulum Bates. — An uncommon species and widely distributed. 



C. hicolor Linn. — Paraweeka Ck., Essequibo R. 



C. dimidiata Burm. — A common species on the coastlands. Strongly 

 attracted to artificial lights. 



C. lunulata Burm. — A fairly coinmor. and widely distributed species. 



C. gravis Bates. — Paraweeka Ck., Essequibo R. 



G. castanea Oliv.— Paraweeka Ck., Essequibo R. 



C.fulgurata Burm.^ — Upper Mazaruni R. 



Ligyrus ehenus DeG. — A common species often taken at electric 

 arc lamps in Georgetown. On one occasion an adult beetle was discovered 

 to have bored its war into a full-grown stem of sugar-cane. Widely 



