MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 295 



Specimens examined. — I have seen seven examples in the British 

 Museum, two in Dr. Cameron's collection, and three collected by me 

 in 1935-37. 



Remarks. — Although I have seen no examples from South America, 

 it seems likelj' that these specimens from the West Indies are Erich- 

 son's species. They were so identified in the British Museum and Dr. 

 Cameron's collection. The above description was taken from my Trini- 

 dad examples. 



The specimen I have referred to as a male has the abdomen muti- 

 lated. The sixth, seventh, eighth, and ninth tergites and the eighth and 

 ninth sternites are missing. The groove on the seventh sternite is the 

 only evidence that it is a male. The smooth integuments of this species 

 place it in the subgenus Scopaeodera. 



The types and my specimens were found under stones at the edge of 

 the river. 



18. SCOPAEUS CHAPINI, nev,- species 



Descrnption. — Piceous, pronotum rufopiceous. Head completely 

 and evenly rounded behind from eye to eye; labrum rather strongly 

 bidentate, with a moderate notch between the teeth ; gular sutures most 

 approximate along middle, never very close; with dense punctation 

 oi- sculpture nearly obsolete, surface strongly shining. Pronotum one- 

 third longer than wide, anterior angles rounded continuously with 

 sides, sides in front feebly emarginate, posteriorly evenly arcuate to 

 base; sculptured still more obsoletely than head, surface strongly 

 shining, without definite midline ; with two rather strong impressions 

 at base leaving a narrow cariniform median ridge. Elytra coriaceous, 

 not punctate but with sparse obsolescent tuberculi; shining. Male., 

 fourth and fifth sternites without trace of a transverse fold ; seventh 

 sternite very feebly and widely emarginate; eighth sternite with a 

 broad triangular emargination, one-half as deep as wide, with outer 

 angles completely rounded into sides of sternite. Female., unknown. 

 Length, 3 mm. 



Type locality. — Jamaica, between Luana and Kensworth via La- 

 covia, Santa Cruz, and Spur Tree, parishes of St. Elizabeth and 

 Manchester. 



7'?//?e5.— Holotype, male, U.S.N.M. No. 52412, collected by Chapin 

 and Blackwelder on February 24, 1937. 



Records. — The following is the only record known to me : 



Jamaica: Santa Cruz (Blackwelder station 421). 



Specimens examined. — I have seen only the unique type. 



Remarks. — This species does not fall clearly into any subgenus in 

 my key (Blackwelder, 1939a). However, if the obsolescent sculpture 

 be considered to be in the process of disappearing, phylogenetically, 



