PTILODACTYLA. 653 



convex in front, sharply margined at the sides and apex, and slightly explanate at the sides behind, the 

 sides rounded and converging from the base, the hind angles acute ; the base trisinuate, finely denticulate 

 at the sides and in the middle, and with a short projecting tooth in the centre ; the surface thickly 

 granulate-punctate. Scutellum rugulosely punctured, notched in the centre in front. Elytra moderately 

 long, wider than the prothorax, sharply margined at the sides, the humeri rounded ; obsoletely seriate- 

 punctate or very finely punctate-striate, and with a row of coarse punctures within the margin, the 

 interstices rugulosely punctate. Fifth ventral segment shallowly arcuate-emarginate at the apex in the 

 male. Tarsal claws with a curved tooth in the male and rectangularly dilated in the female. 

 Length 5|— 6, breadth 2| millim. ( <S $ •) 



Hah. Panama, Volcan de Chiriqui 2500 to 4000 feet [Champion). 



One pair. A second male from the same locality probably belongs here ; it has, 

 however, the apices of the elytra sharper and slightly produced. This species is very 

 like P. serrata, but differs from it in the much finer and incomplete denticulation of 

 the basal margin of the thorax. From P. denticulata it may be known by its less 

 elongate shape and the different form of the last ventral segment in the male ; from 

 P. parallela by the fine but distinct denticulation of the greater part of the base of 

 the thorax ; and from P. granulicollis by its larger size, broader form, less distinctly 

 striate elytra, &c. In one specimen the fine seriate punctures on the elytra are 

 obliterated beyond the middle. 



48. Ptilodactyla subparallela. 



<$ . Moderately elongate, rather depressed, shining, thickly clothed with yellowish-cinereous pubescence ; 

 pitchy-black or piceous, the margins of the prothorax, the scutellum, and the suture and shoulders of the 

 elytra indeterminately reddish in one specimen, the antennas piceous or brownish, the legs obscure 

 testaceous. Head rugulosely punctured, the eyes moderately large; antennas long and slender, the joints 

 4-10 each with a moderately long ramus. Prothorax short, feebly convex in front, sharply margined at 

 the sides and apex, the sides rounded and rapidly converging from the basal third forwards ; the base 

 trisinuate, finely denticulate ; the surface thickly granulate-punctate. Scutellum rugulose, notched in 

 the centre in front. Elytra elongate, subparallel in their basal half, wider than the prothorax, sharply 

 margined at the sides, the humeri rounded ; finely, rugulosely punctate, and in one specimen obsoletely 

 striate on the disc. Fifth ventral segment feebly arcuate-emarginate at the apex. Tarsal claws with an 

 acute curved tooth. 

 Length 5^-6, breadth 2l-2± millim. 



Bab. Mexico, Jalapa (Hoge). 



Two males. Very like P. denticulata, but more depressed and more parallel, the 

 fifth ventral segment very differently formed in the male. 



From P. serrata, which it resembles in shape, it may be distinguished by the more 

 sinuate and less strongly denticulate basal margin of the thorax. 



49. Ptilodactyla forcipata. 



Moderately elongate, flattened above, shining, thickly clothed with rather long yellowish-cinereous pubescence ; 

 rufo-fuscous or obscure rufo-testaceous, the legs and antennas testaceous or obscure testaceous. Head 

 rugulosely punctured, the eyes large ; antennas long and slender, the joints 4-10 each with a moderately 

 long ramus in the male and serrate in the female. Prothorax short, convex, and greatly narrowed in 

 front, acutely margined at the sides and apex, the sides rounded behind and rapidly converging from 



