MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 319 



8. LOBRATHIUM REDUCTUM, new species 



Description. — Piceous, the head generally black, base of elytra nar- 

 rowly ruf escent. Head with rather coarse and sparse punctures ; sides 

 behind eyes arcuate and rounded into base without angles; without 

 ground sculpture; gular sutures straight, moderately separated in 

 front and diverging to base. PronotuTn with median smooth space out- 

 lined by two regular series of 12 to 14 punctures, the series sometimes 

 interrupted by a misplaced or doubled puncture ; with a few scattered 

 punctures laterally; without ground sculpture. Elytra very small, 

 appressed ; with fine and somewhat indistinct submuricate punctures 

 not in series; surface uneven but without distinct ground sculpture. 

 Hind tarsus with fiirst segment not noticeably longer than second. 

 Male, seventh sternite unmodified ; eighth with a very small triangular 

 incision, the angles rounded, tlie apex acute. Female^ sternites unmodi- 

 fied. Length, 6 to 7 mm. 



Type locality. — Dominican Republic, Valle Nuevo, southeast of 

 Const anza, elevation about 7,000 feet. 



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

 parative Zoology; four paratypes in the United States National 

 Museum (No. 52498) ; collected in August 1938 by Dr. P. J. Darlington. 



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



Hispaniola: Dominican Republic, Valle Nuevo (Darlinglon, in M.C.Z. and 

 U.S.N.M.). 



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



Remarks. — This species is one of a group of three collected by Dr. 

 Darlington that are very distinct by the subterranean habitus. It 

 differs greatly from horinqucnse and pluviosum in the punctation of 

 the pronotum, but probably belongs, with those two species, to an 

 undescribed subgenus. 



It was found at elevations of 6,000 to 7,000 feet in cloud-forest, prob- 

 ably in ground cover. 



9. LOBRATHIUM BORINQUENSE, new species 



Description. — Rufous, with abdomen more or less piceous. Head 

 above entirely impunctate except for a large setigerous puncture over 

 each eye, a pair between the eyes, and a row of four above the neck; 

 without trace of ground sculpture; gular sutures widely separated, 

 nearly parallel throughout. Pnmotvm nearly twice as long as head 

 or elytra and twice as long as broad ; with median space outlined by two 

 even rows of six punctures ; with 7 to 10 scattered punctures laterally ; 

 without trace of ground scul])ture. Elytra very small, appressed ; each 

 with 4 longitudinal series of large punctures, the inner two rows of 

 about 4 punctures, the outer 2 of 6 to 8 ; without trace of ground sculp- 

 ture. Hind' tarsus with first segment about as long as second. Ahdo- 



