282 BULLETIN 18 2, UNITED STATES NATIONAL MUSEUM 



emarginate behind, the angles rather narrowly rounded; eyes sepa- 

 rated from base by a little over twice their length ; labriim with two 

 small median denticles; gular sutures rather narrowly separated in 

 front, feebly diverging posteriorly; finely and densely punctured, 

 the punctures obscured by indistinct ground sculpture. Pronotum 

 one-fourth longer than wide, anterior angles very broadly rounded; 

 sides in front not emarginate, straight to rounded posterior angles; 

 without trace of midline; punctures and sculpture similar to that of 

 head. Elytra with sculpture similar to that of head but deeper and 

 a little less dense. Male^ fourth and fifth sternite with a transverse 

 fold, seventh not emarginate; eighth sternite with a very feeble 

 rounded emargination, not abrupt. Female^ eighth sternite promi- 

 nently rounded; eighth tergite witli a slightly arcuate prominence. 

 Length, 2 to 2i^ mm. 



Type locality. — Jamaica, 2 miles northeast of Gordon Town on 

 road to Mavis Bank. 



Types. — Holotype, male, and four paratypes, U.S.N.M. No. 52419. 

 collected by Chapin and Blackwelder in February 1937. 



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



Jamaica: Gordon Town (Blackwelder station 368B), Trinity ville (Blackwelder 

 station 428). 



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



Rem/irhs. — This species is superficially rather similar to several 

 of its neighbors, but is distinguished b}'^ the feeble male chaiacters. 

 It belongs in the subgenus Scopaeus s. str. 



3. SCOPAEUS POTAMUS, new species 



Description. — Rufopiceous, the head generally lighter than the pro- 

 notum, el3'tra paler along apex. Head distinctly emarginate behind, 

 the angles rather narrowly rounded ; the eyes separated from the base 

 by about twice their length; labrum with median denticles rather 

 enlarged at base, with an indistinct outer pair; gular sutures mod- 

 erately narrowly separated in front of middle and feebly diverging 

 posteriorly; without distinct punctures but with dense fine ground 

 sculpture. Pronotwm one-fourth longer than wide; anterior angles 

 strongly rounded, sides scarcely emarginate in front, feebly arcuate 

 to posterior angles; with trace of impressed midline; with ground 

 sculpture as on head but less distinct. Elytra not distinctly punc- 

 tate but densely subasperately or tuberculately sculptured. Male, 

 fourth and fifth sternites with a transverse fold, seventh broadly 

 feebly emarginate; eighth sternite with a rather large and broad 

 emargination, one-third as deep as wide. Female.^ eighth sternite 

 rounded ; eighth tergite rounded. Length, 2 to 214 mm. 



