of 8t. Vincent, Grenada, and the Grenadines. 11 



•wards, and strongly bisinuate at the base, the latter wider than the 

 elytra ; the sides coarsely and irregularly crenate, the anterior 

 angles greatlj' produced in front, the hind angles sharp and directed 

 inwards ; the surface studded with smooth, strongly raised, granular 

 elevations, the disc broadly and shallowly grooved down the middle. 

 Elytra about twice as long as the prothorax, rounded at the sides, 

 gradually narrowing from the middle forwards and rapidly and 

 obliquely narrowing behind, very convex, abruptly declivous behind, 

 the humeri acute and directed outwards ; the surface studded 

 with strongly raised, subserially arranged, smooth, granular eleva- 

 tions, which become coarser and more scattered towards the 

 suture, and also with irregular rows of coarse, deep punctures, 

 which also become more scattered towards the suture and are 

 usually completely hidden by the scaly coating. 



^ . Head broadly excavate in front, the sides of the front 

 strongly and angularly dilated ; the epistoma armed with a long, 

 suberect, flattened process, which is dilated at the tip, the tip itself 

 slightly emarginate. 



Length 5f-8, breadth 3:|-4 mm. ( (^ 9 )• 



Hah. St. Vincent — Windward side ; Grenada — Wind- 

 sor and Balthazar. 



Numerous examples of both sexes. This species is 

 not very closely allied to any of those from South 

 America described by Pascoe, or to the Central- American 

 forms described by myself. 0. clongata, Champ., from 

 Nicaragua, has a somewhat similar cephalic horn in the 

 male ; but the horn in that species is placed on the 

 vertex, whereas in 0. tuherciilifera it arises from the 

 front of the epistoma. The smooth granular elevations 

 of the surface arise from tubercular elevations, the inter- 

 spaces being covered with a scaly incrustation, which 

 hides the sculpture and the very short, fine, hair-like 

 scales. In rotten wood and under logs (Smith). 



Arrhenopltta. 



Oplocephala, Laporte et Brulle, Ann. Sciences Nat., 



xxiii., p. 338 (1831) (nomen pra^occ). 

 Arrhenoplita, Kirby, Fauna Am. -Bor.,iv.,p. 235 (1837). 

 Evoplus^ Leconte, New Sp. Col., p. 128. 



Arrhenoplita suilla, n. sp. 

 Oblong oval, moderately convex, opaque, testaceous, clothed 

 with a very fine, short, pruinose pubescence ; the entire upper 



