656 SEEEICOENIA. 



Eab. Costa Kica, Volcan de Irazu (Rogers) ; Panama, Volcan de Chiriqui 

 (Champion). 



A male from Costa Rica and a female from Chiriqui. Very like P. denticulata, but 

 with the thorax much more finely punctured and its basal margin smooth, the fifth 

 ventral segment very differently formed in the male. 



54. Ptilodactyla deleta. 



Moderately elongate, rather narrow, flattened above, shining, thickly clothed with yellowish-cinereous pubes- 

 cence ; varying in colour from piceous to rufo-testaceous or testaceous, the elytra with a paler humeral 

 patch, the antennas and legs testaceous or obscure testaceous. Head densely 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, sharply margined at the sides and 

 apex, the sides rounded behind and rapidly converging from a little before the base to the apex, the hind 

 angles acute ; the base trisinuate, feebly denticulate towards the sides ; the surface thickly punctured. 

 Scutellum rugulosely punctate, with a shallow notch in the centre in front. Elytra moderately long, a 

 little wider than the prothorax, subparallel in their basal half, sharply margined at the sides and 

 slightly produced at the apex, the humeri rounded ; punctate-striate to near the apex, the interstices 

 rugulosely punctured. Fifth ventral segment sub triangularly emarginate at the apex in the male. 

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



Length 3§-5, breadth 11-2 miUim. ( S 2 •) 



Eab. Mexico, Amula in Guerrero, Teapa in Tabasco (E. E. Smith), Jalapa, Cerro 

 de Plumas (Edge) ; Guatemala, near the city (Salvin), Zapote, Capetillo, Calderas, 

 San Geronimo, Chiacam (Champion). 



Very near P. forcipata and P. granulieollis, but smaller and also rather more shining, 

 differing from them chiefly in the feebly notched scutellum, the feebly denticulate 

 basal margin of the thorax, and the sub triangularly emarginate fifth ventral segment 

 in the male. Most of the Guatemalan specimens are testaceous in colour. The single 

 male from Jalapa has the fifth ventral segment more deeply emarginate than the 

 others. 



55. Ptilodactyla marcida. 



Oblong-oval, narrow, flattened above, shining, thickly clothed with yellowish-cinereous pubescence ; piceous or 

 fuscous, the elytra sometimes fusco-testaceous, the antennae and legs testaceous or fusco-testaceous. 

 Head densely punctured, the eyes large and prominent in the male, smaller in the female ; antenna? 

 elongate and very slender, the joints 4-10 each with a slender ramus in the male and very feebly serrate 

 in the female. Prothorax short, convex and much narrowed in front, sharply margined at the sides and 

 apex, the sides rounded behind and rapidly converging from a little before the base to the apex, the hind 

 angles acute ; the base trisinuate, almost smooth ; the surface thickly punctate. Scutellum rugulosely 

 punctate, with a very shallow notch in the centre in front. Elytra moderately long, considerably wider 

 than the prothorax, sharply margined and distinctly rounded at the sides, the humeri rounded ; punctate- 

 striate to near the apex, the interstices rugulosely punctured. Eifth ventral segment subtriangularly 

 emarginate at the apex in the male. Tarsal claws with an acute curved tooth in the male and rectangu- 

 larly dilated in the female. 



Length 3|-4, breadth 1|-1| miUim. ( S 2 •) 



Eab. Guatemala, Capetillo (Champion). 



