MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 345 



Specimens exmnined. — I have seen 24 examples from the Museum 

 of Comparati\^e Zoology, of which some will be deposited in the 

 United States National Museum. 



Remarks. — This is one of the most easily recognized staphylinids 

 in our region. It is, of course, a member of the South American 

 fauna and is believed to be Fauvel's species, although I have not been 

 able to compare it with other specimens of that species. It differs 

 widely in punctation and sculpture from O. versatilis Erichson. 



Dr. Darlington collected this series from deep grass along a pond. 



XLIX. SUNIOPHACIS, new genus 



Genotype. — S. conccZor Blackwelder (designated here). 



Diagnosis. — Body rather short and stout; antennae moderately 

 filiform, not geniculate; labrum without teeth, truncate, narrowly 

 emarginate at center; maxillary palpi long, fourth segment minute, 

 pubescent ; gular sutures united ; prothorax nearly circular, not much 

 prolonged anteriorly at middle; prosternum expanded .under coxae 

 nearly to hypomera but not connate with the latter; anterior coxal 

 cavities closed behind (by the sternum beneath the coxae rather than 

 by the hypomera) ; front coxae conical, prominent; middle coxal 

 cavities confluent; posterior coxae conical, approximate; abdomen 

 margined, somewhat contracted at base; first and second sternites 

 absent; in general, eighth sternite feebly emarginate in males, feebly 

 prolonged in females; fourth segment of tarsus lobed beneath. 



Remarks. — This genus appears to be distinguishable from Stilo- 

 saurus, .Su7)iocharis, iStamnoderus, jSuniosaurus, and Stiliphacis by 

 the characters mentioned in the key. The genera in this comiDlex 

 are not yet sufficiently understood to make the generic limits certain, 

 but so far as the West Indian species are concerned the genera are 

 readily recognized. 



Of this genus I have seen 1 example in the Museum of Compara- 

 tive Zoology, 1 in Dr. Cameron's collection, and 12 in the United States 

 National Museum. These I divide into three rather feebly differenti- 

 ated species, of which two are described as new. 



KEY TO WEST INDIAN SPECIES OF SUNIOPHACIS 



1. Pronotum with umbilicate punctures united in distinct longitudinal grooves. 



3. hubbardi 

 Proriotnm with umbilicate punctures irregular, not in even rows 2 



2. Elytra entirely testaceous 1. concolor 



Elytra in part piceous or infuscate 2. thoracicus 



1. SUNIOPHACIS CONCOLOR, new species 



Description. — Eufopiceous, elytra testaceous. Head moderately 

 large, suborbicular, almost as wide as elytra ; eyes moderate, not very 



449008 — 42 23 



