212 BULLETIN 182, UNITED STATES NATIONAL MUSEUM 



ately large punctures separated by about their diameter by flat inter- 

 vals; pubescence moderate. Tarsi with fourth segment not at all 

 bilobed; posterior tarsi moderately long, first segment about as long 

 as fifth. Male, eighth sternite very feebly broadly emarginate. 

 Length, 3 to 3% mm. 



Type locality. — Jamaica, about 5 miles west of Black River (li/^ 

 miles southeast of Scotts Cove). 



Types. — Holotype, female, and four paratypes, U.S.N.M. No. 52388, 

 collected by Chapin and Blackwelder on February 24, 1937; and 

 tliree paratypes, same number, collected by H. G. Hubbard. 



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



Jamaica: (Hubbard, in U.S.N.M.), Black River (Blackwelder station 416), 

 Castle Daly in St. Anns (DarlinRton, in M.C.Z. and U.S.N.M.), Cinchona 

 (Darlington, in M.C.Z. and U.S.N.M.), Whitfield Hall in Blue Mountains 

 (Darlington, in M.C.Z. and U.S.N.M.). 



Specirnens examined. — I have seen only the eight types in the 

 United States National Museum and seven specimens from the 

 Museum of Comparative Zoology. 



Remarks. — This species is distinguished from all others in our region 

 by its dense punctation and rugose appearance on both the elytra and 

 the pronotum as well as by its filiform tarsi. 



It was found by Dr. Chapin and me on the damp muddy edge of 

 a small pond. 



3. STENUS RULOMUS, new species 



Description. — Shining black; unusually flattened above. Head 

 feebly longitudinally biimpressed; labrum broadly rounded; with 

 moderately coarse deep punctures irregularly spaced but separated 

 by abrupt intervals which have traces of ground sculpture; without 

 smooth areas. Pronotvjn punctured as the head but intervals more 

 irregular with punctures occasionally partly united with traces of 

 ground sculpture on intervals; as long as wide, widest at middle, 

 feebly narrowed to apex, feebly emarginate to base. Elytra one- 

 ninth broader than long, one-fourth wider than pronotum; with 

 humeral callus indistinct ; punctured and sculptured similarly to pro- 

 notum. Abdomen margined throughout; with moderately small 

 punctures separated by about their diameter, the flat intervals with 

 obsolescent sculpture. Tarsus with fourth segment not bilobed; pos- 

 terior tarsus rather short, first segment about as long as fifth. 

 Male, sixth sternite just visibly emarginate; seventh with a shallow 

 arcuate emargination in median third, surface depressed before 

 emargination ; eighth sternite with an abrupt triangular emargina- 

 tion twice as wide as deep, apex not rounded, sides straight. Fe- 

 mcde unknown. Length, 3 mm. 



Type locality. — Bahama Islands, Nassau. 



