MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 



251 



iiate in part, not greatly prolonged between coxae; hypomera pro- 

 longed in a short lobe partially behind the coxae; anterior coxai 

 cavities open behind, confluent; front coxae very large, exserted; 

 middle coxal cavities confluent; posteirior coxae contiguous, conical; 

 first and second abdominal sternites absent, seventh sternite more or 

 less modified in the male, usually biemarginate, eighth emarginate 

 in male only : anterior tarsus dilated. 



Remarks. — This genus is not strongly distinguished from Lithocharis 

 and may be only a subgenus of it. I am led to keep it separate because 

 of the ease with which it can be separated at a glance by its much 



Figure 2. — Apical abdominal sternites of males of Aderocharis: A, A. cubensis, new species; 

 B, A. suiuralis, new species; C, A. dubitans, new species; D, A. conifer Cameron. 



greater size. The male characters are also quite different and, as in 

 Lithochaiis^ are the only satisfactory means of separating many of 

 the species. 



I have examined 59 examples from the West Indies. Of these 19 

 are in the British Museum, 11 in the collection of Dr. Cameron, 5 in 

 the Museum of Comparative Zoology, 8 in the United States National 

 Museum, and 16 were collected by me in 1935-37. 



KEY TO WEST INDIAN SPECIES OF ADEROCHARIS 



1. Seventh abdominal sternite of male emarginate 2 



Seventh abdominal sternite not at all emarginate 1. cubensis 



2. Seveutli abdominal sternite of male biemarginate 3 



Seventh abdominal sternite of male with three emarginations__ 4. suturalis 



3. Emarginations separated by a large process 3. conifer 



Emargiuations feebly separated by a flat arc 2. dubitans 



1. ADEROCHARIS CUBENSIS, new species 



Description. — Rufocastaneous. Head not distinctly emarginate at 

 base nor with very prominent angles but eyes small and separated from 

 base by one-half more than their length; gular sutures convergent 

 toward base but separated throughout in the male ; antennal segments 



