440 [December, 



other the lunule is narrow and divided, and the humerus has a distinct round 

 white spot ; in a third there is no humeral spot, but there is a narrow transverse 

 line about the middle, and one-third way from the margin to the suture ; a small 

 spot below and inside of this is obsoletely connected with it ; the line joining 

 these spots, and which represents the medial band of the elytra, makes an angle 

 of about 45 with the suture. This species is very closely allied to C. obsoleta 

 Say, and differs from it principally by the thorax being more convex and dis- 

 tinctly rounded on the sides. 



TosTEGOPTERA Blanch. 



1. T. ventricosa, atra convexa (glabra?) thorace lateribus rotundatis 

 serratis medio subangulatis confertim grosse punctato, callo pone medium dor- 

 sali lasvi, disco antice rix obsolete impresso, elytris subsulcatis, confluenter 

 minus profunde punctatis, punctis granulo elevate munitis, costis fere laevibus. 

 Long. '9, lat. '57. 



Two females. This species is very different from S. cribosa Lee. (Proc. Acad. 

 Nat. Sc. 6,23), by thepuncturesof the thorax being smaller and more regular, and 

 by the absence of the distinct flattened surface before the middle; the elytra are 

 also more distinctly sulcate. I am inclined to believe that these species are in 

 reality furnished with hairs or scales when living, and that the little granule ob- 

 served in each of the large punctures of the elytra is the attachment of such 

 scales. The fine scattered punctures of the under surface are furnished with 

 short hairs, but those of the upper surface are entirely glabrous. 



2. T. aequalis, atra, convexa, thorace lateribus rotundatis vix serratis* 

 medio subangulatis, sat dense minus grosse punctato, pilis albidis consperso 

 elytris aequaliter sat grosse punctatis, lineis duabus sub-laevibus vix distinctis> 

 sutura elevata punctis paucis notata. Long. -S, lat. '45. 



One female. Easily distinguished by the absence of any distinct grooves and 

 the smaller punctures of the elytra. The punctures of the thorax still retain 

 some elongated flattened white hairs, which may originally have been dense ; 

 the punctures of the elytra furnish excessively short, almost invisible white 

 hairs. 



I have adopted this genus, because it has been recently proposed, and because 

 I have had no leisure yet to examine critically the group to which it belongs ; 

 still, after a comparison between the different species, and some of our common 

 species of Phyllophaga Harris, (Ancylonycha Blanch.) 1 have failed to discover 

 any reason why they should be separated. 



A new species from Texas completes the connection, by possessing with the 

 thick convex body of Tostegoptera, the exact sculpture of Phyllophaga quercina. 



Erirhipis Burm. 



1. E. Kernii, nigra, subtus nitida, longe pallide pilosa, supra^subnitida, 

 antennis rufescentibus, clypeo tenuiter marginato, vix emarginato, thorace lati- 

 tudine breviore, lateribus rotundatis basique luteis, disco punctato, breviter 

 piloso, linea dorsali sublaevi subelevata, calloque utrinque vix distincto, elytris 

 plus minusve flavo variegatis, sutura costisque duabus elevatis, interstitiis stri- 

 gosis et punctatis. Long. '39 '54. 



Euphoria cer^zi* Haldeman,Stansbury's Exped.toSalt Late. 374, tab. 9, fig 10. 



Large numbers of this species have been collected by Lieut. Haldeman in 

 Texas, and by the Boundary Commission at Eagle Pass ; the original specimen 

 was obtained by the late Mr. R. Kern near Santa Fe. 



The male has the club of the antennae as long as the remaining portion, and 

 the anterior tibiae armed with two moderate teeth, the third or upper tooth being 

 hardly visible. 



In the female the club of the antennae is shorter than the rest ; the anterior 

 tibiae are armed with three teeth, of which the two inferior are longer than in 

 the male. 



In most specimens the elytra are yellow, with the suture, and some spots es- 

 pecially near the suture, black ; the black spots gradually enlarge until the elytra 



