420 (44) Mr. G. R Crotch's Revision of 



Pselaphacus confasus, sp. n. 



F. sparse affinis, sed thorace toto nigro, elytrls basi nigro 

 bimaculato. L. 6 lin. 



Para. 



[This and the preceding nine species are closely allied, and 

 I am inclined to think are very possibly colonr-varieties.] 



Pselaphacus nigropictus, sp. n. 



Niger, nitidus, thorace subtiliter punctate, lateribus i-otundatis, 

 postice paulo coarctato; elytris obsoletissime punctulatis, striato- 

 punctatis, fulvo-ochraceis, margine, sutura, vitta apicali, maculis- 

 que 6 (2, 2, 2) nigris. L. 6— 7| lin. 



Amazons (Bates). 



The second spot touches the shoulder, the third reaches the 

 suture and sometimes joins the fourth, the fifth is occasionally 

 composed of two, the sixth is veiy small; the sutural margin is 

 dilated at the apex. 



B. Anterior tibiae ai'cuate at their base; thorax simple. 



Pselaphacus curvipes. 



Pselaphacus curvipes, Guer. R. Z. 157 (1841). 



, Lac. Erot. 81. 



■ gracilipes, Lac. Erot. 82. 

 Bolivia, N. Granada, Amazons. 

 <5 segmento ultimo ventrali biimpresso. 



I cannot distinguish P. gracilipes by any character given by 

 Lacordaire. 



Pselaphacus trifasciatus.* 



Pselaphacus trifasciatus, Lac. Erot. 83. 



Cayenne. 



Of this species I have not seen authentic types, it seems to me 

 to be merely P. curvipes; the markings are identical, the tibiae 

 less arcuate, and the posterior femora not dentate at the base; 

 hence I suppose it is founded on small males of P. curvipes. 



Pselaphacus distortus. 



Pselajyhacus distortus, Crotch, Cist. Ent. 142. 

 Mexico, Nicaragua (Janson). 



Pselaphacus punctato-striatus, sp. n. 



Niger, nitidus, thorace transverse, obsolete parce punctate; 

 elytris Itevibus, profunde punctato-striatis, singido lunula basali 



