BUFFALO SOCIETY OF NATURAL SCIENCES 7 



Family Pentatomidae 



Mormidea pictiventris Stal. 



Not uncommon at many places on the island. I took them 

 at Mandeville, and in abundance at Balaclava. Most of these 

 were deeply colored. Specimens in my collection from Co- 

 lumbia and Mexico are much paler. 



Mormidea sordidula Stal. 



I swept two examples of this from weeds along a roadside 

 just north of Richmond on April 15th. In my collection is an 

 example taken at Linares, Mexico by Prof. Gillette in July 

 1899. A similarly colored species from Trinidad, W. I., I have 

 determined as scutellata Westw. It may be distinguished from 

 the present by the pale venter and narrow pale calloused mar- 

 gins of the scutellum. 



Oebalus pugnax Fabr. 



One example swept from herbage by the roadside at Rich- 

 mond. 



Euschistus crenator Fabr. 



Not uncommon in many places. I took it at Rock Fort 

 near Kingston, Balaclava and Montego Bay. In each locality 

 they were taken singly from bushes and coarse weeds. 



In this species as I distinguish it the subacute humeri are 

 directed slightly backward. In all my Jamaican and Mexican 

 specimens the humeri are decidedly broader with their anterior 

 margins convexly rounded. Those from the Island of Trinidad 

 and Hayti have the humeri more acute and less recurved. 



Euschistus bifibulus P. B. 



This was a much more abundant species than the preceding 

 all over the island but it was more common in the more humid 

 and cooler localities while crenator affected the hotter and 

 dryer parts of the island. In this species the humeri are pro- 

 duced in black acute horns which are directed distinctly for- 

 ward. There is an obvious paler vitta connecting the humeri 

 which is dislocated about an angular blackish mark on the 

 median line, and the genital segment of the male is short with 

 its apical margin broadly and deeply excavated. In crenator 

 this segment is longer, narrowed posteriorly, with the apex 

 feebly notched. I have received one specimen, apparently of 



