430 



Mr. G. J. Arrow on the 



small individuals this is almost or entirely obsolete. The 

 pygidium is long and incurved, and bears a d arrow, longitu- 

 dinal, smooth line. The front claws are simple and the rest 

 cleft. 



$ . The abdomen is short and stout and the legs are 

 much shorter than those of the male. The clothing of the 



Fiff. 3. 



Fis-. 3 a. 



upper surface is a little less dense, the seta? being rather 

 less numerous. There is a small, round, denuded patch on 

 each side of the base of the pronotum ; the pygidium is 

 short and rather flat, and the claws are all cleft at the tip. 



It appears to be common in Trinidad, and was found by 

 Mr. F. W. Urich eating leaves of the cacao-tree in May. 



Pectinosoma, gen. nor. 



Corpus augustum, attenuatum. Caput parvum. Oculi haudpromi- 

 nentes. Clypeus brevis, margine antico recto. Antennae 9-arti- 

 culatae. Pronotum hexagonum, elongatum. Prosternum postice 

 oblique productum, utrinque planatum, apice bifidum. Pedes 

 graciles ; coxa? intermedia? et posticae late distantes ; tibiae anticae 

 baud fortiter bidentatae ; tarsi omnes sat longi et crassi, singulo 

 apice pilis 4 longis divergentibus instructo ; ungues longi, iutegri. 

 Metaeternum et abdomen subtus late excavati, hujus segmentum 

 penultimum lamina horizontali postice minute dentata munitum. 



Pectinosoma elongatum, sp. n. (Figs. 4, 4 a.) 



Nigrum, clypeo, elytrorum marginibus anguste pedibusquo cas- 

 taneis ; corporo supra opaco, minute nigro-setoso, marginibus 

 extremis omnibus, scutello,8uturaque, setisalbis multo majoribus 



