114 Mr. F. P. Pascoe on some new or little-hnown 



captures of Mr. Fry at Rio, which perhaps, partly from their small 

 size, and partly from the extremely limited area which many of the 

 insects of that country aifect, it is almost hopeless to expect can 

 ever be obtained except by the most indefatigable and experienced 

 collectors. The number of undescribed genera which are almost sure 

 to be found in every extra- European collection that may be formed by 

 an accomplished naturalist, should not be overlooked by those who 

 are inclined to question the necessity of the multiplication of new 

 names. 



Pharax laticollis. (PL VIII. fig. 1.) 

 P. ovatus, fuscus, tuberculiferus, griseo-setosus j antennis capitis latitu- 



dine sequalibus. 

 Hah. Brazil (Rio). 



Ovate, dark brown, covered with short, stiff, scale-like hairs ; head 

 slightly concave above ; prothorax somewhat bilobed anteriorly, its 

 disc with four depressed tubercles ; scutelhmi deeply set ; elytra short, 

 convex, with about ten tubercles on the disc, the posterior being the 

 largest, the margins irregularly set with short stiff' scales ; antennae, 

 palpi, and tarsi ferruginous, the former about equal in length to the 

 width of the head. Length 1|^ line, 



Chokites [Colydiidse], 



Head transverse, much narrower than the prothomx and deeply inserted 

 in it, its supra-antennary borders slightly produced. Eyes large, and 

 very rough, from the facets being prolonged into short spines. Antennae 

 short, slender, eleven-jointed, the first and second slightly incrassated, 

 the third longest, the remainder to the ninth gradually decreasing in 

 length, the tenth and eleventh forming an abrupt ovate club. IVIaxillary 

 lobes ciliated, the external sub triangular, the internal narrower. Palpi 

 short, claviform; the terminal joint of the maxillary ovate-cylindrical, 

 of the labial ovate-oblong. Mentmn subquadrate. Labium ti'ans- 

 verse, ciliated anteriorly. Prothorax very transverse, narrowed and 

 sinuated anteriorly, as broad as the elytm at the base. Elytra convex, 

 short, the sides gradually rounded to the apex. Legs small j coxae, 

 especially the posterior, very remote; femora compressed; tibiae 

 slightly enlarged at their extremity, ciliated externally, and terminated 

 by two short spurs ; tarsi short, slender, with long hairs beneath, the 

 basal joint very distinct. Abdominal segments gradually decreasing 

 in size. 



The widely separated posterior coxae narrow considerably the 

 number of Colydian genera with which Chorites may be compared ; 

 at the same time, although the first abdominal segment is in every 

 way larger than the others, there is not the decided diff'erence we 

 see in Derataphnis, Sosylus, &e. ; and if we exclude these genera. 



