Longicorn Cohoptera of Trojncal America. 127 



Phespia, nov. gen, 

 Anfemue breves, gradatim incrassatae; articulo tertio cylindrico, 

 quarto et quinto trigouis, sexto usque decimum quadrato-dilatatis, 

 perfoliatis, nuUo modo serratis. Thorax lateribus regulariter ro- 

 tundatus, supra convexus. Elytra abbreviata, gradatim attenuata, 

 apice acumiuata, sutura prope apicem hiantia, supra vitta exteriore 

 subhyalina. Abdomen brevissimum, vespiforme. Pedes subgra- 

 ciles ; femora pedunculata, versus apicem clavata ; tihi(B posticae 

 apice scopiferae. Caetera ut in gen. Odontocera. 



A genus formed for the reception of a small number of species, 

 differing in the form of the antennse and elytra too much from 

 Odontocera and Acyphoderes to be united to either. The en- 

 larged antennal joints are not serriform, but almost equally 

 dilated on each side, so as to form a quadrate or thick cylin- 

 drical figure ; and the elytra are subuliform, in quite a dif- 

 ferent way from the same members in Acyphoderes^ Isthmiade, 

 Bpliecomorplia^ or in Odontocera in the few species wliich as- 

 sume this form. They are naiTowed almost from the base, 

 most so on their outer side, by which, when closed, the sides 

 of the metasternum and abdominal segments are visible from 

 above ; along the suture they are straight until near the apex, 

 whence they taper obliquely and each forms a point at its apex : 

 above, the vitreous stripe nms obliquely from the shoulder, 

 and is interrupted by a dark bar before the apex. The abdo- 

 men is relatively very short, not much longer than the meso- 

 and metathorax together. In general appearance the species 

 mimic the species of the Cerceris group of solitary wasps. 



The genus is no doubt closely allied to Tomopterus. 



1. Phespia cercerina^ Bates. 

 Odontocera cercerina, Bates, Trans. Ent. Soc. 1870, p. 325. 

 K. Amazons. 



2. Phespia simidans^ n. sp. 

 Ph. cercerinrr similis, at elytris longioribus ; fulvo-brunnea vel nigro- 

 fusca ; capite thoraceque nigris, tibiis posticis fere a basi dense 

 fusco-nigro birsutis. Long. 4-5| lin. 5 . 



Novo Friburg, Rio Janeiro, and Prov. Parang {coll. Dr. 

 Baden and W. W. Saunders). 



Larger than Ph. cercerina. Head blackish, with stripe of 

 golden pile down each side of the forehead and round the eyes. 

 Antennae black, reddish at the base; sixth to tenth joints 

 thick, cylindrical, compact. Tliorax closely but indistinctly 

 punctured, black ; anterior and posterior margins golden pu- 

 bescent. Scutellum golden pubescent. Elytra longer than in 



