MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 355 



[>arative Zoology, one in the United States National Museum, and three 

 collected by me during 1935-37. 



Remarks. — I have been unable to separate these two species even 

 by the differential characters given by Dr. Cameron. These characters 

 all refer to structures or conditions that vary even among the four 

 examples now before me. The fact that the types were taken at the 

 same place and apparently represent opposite sexes when considered 

 with the variation shown by my small series appears to indicate un- 

 avoidably that the two names represent just one variable species. It 

 is interesting to note here that the other species of this genus from our 

 region are also variable and cannot be separated by color or any charac- 

 ter that shows variation within a single series. 



My specimens were taken flying at dusk or found incidentally in the 

 liet while taking fireflies at night in tall brush. 



4. STAMNODERUS CAMERONI, new species 



Descnption. — Riifotestaceous, the head and pronotum sometimes a 

 little darker than the elytra. Head, without raised lines along coronal 

 suture ; epistomal suture not marked except by irregular depressions ; 

 dypeus with rather feeble punctures, not distinctly umbilicate, becom- 

 ing obsolete on the vertex ; labrum transverse with a large broad median 

 anterior lobe. Pronotum- with only a trace of midline; punctured as 

 clypeus; without ground sculpture; lateral impressions feeble; with 

 an irregular depression at middle of base. Elytra one-ninth longer 

 than wide, nearly parallel ; with rather coarse and distinct punctures 

 separated by nearly their diameter. Abdomen finely and densely sub- 

 muricately punctate. Male., seventh sternite broadly feebly emargin- 

 ate ; eightli wiih a broadly triangular emargination, about eight times 

 as wide as deep. Female, sternites not modified. Length, 3 to 4 mm. 



Type locality. — Dominican Republic, San Jose de las Matas; 

 elevation 1,000 to 2,000 feet. 



Types. — Holotype, male, and five paratypes in the Museum of Com- 

 parative Zoology; four paratypes in the United States National 

 Museum (No. 52518) ; collected in July 1938 by Dr. P. J. Darlington. 



Records. — The following are the records known to me: 



Hispaniola: Haitt, Port-au-Prince (Darlington, in M.C.Z.) ; Dominican Re- 

 puBLio, Villa Altagracia (Darlington, in M.C.Z), Puerto Plata (Darlington, 

 in M.C.Z. and U.S.N.M.), San Jo!?6 de las Matas (Darlington, in M.C.Z. and 

 U.S.N.M.). 



Specimens examined. — I have seen only the 10 types. 



Remarks. — This species is very similar to hemhaueri but differs in 

 the absence of the rai,sed coronal line and the less distinctly umbilicate 

 punctures. 



I have received no record of its habits. 



