MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 339 



4. BIOCRYPTA DOMINICANA, new species 



Description. — Black, sometimes picescent in part. Head with eyes 

 about at middle of length; basal segment of antennae about half as 

 long as head, about as long as disl ance between them ; antennal grooves 

 distinct; with moderate but uneven punctures fairly dense basally 

 but sparse in front; with rather indistinct ground sculpture basally. 

 Pronotum with slightly elevated smooth median band set off by punc- 

 tures only partly in series ; with moderate punctures frequently sepa- 

 rated by about their diameter; wdthout distinct ground sculpture. 

 Elytra much larger than pronotum ; with dense but rather small punc- 

 tures separated by somewhat flattened intervals, not at all serial; 

 without distinct ground sculpture. Male, fourth sternite with a large 

 circular fovea ; fifth with a still larger circular fovea occupying nearly 

 the entire middle third of the segment; seventh with a narrow oval 

 excision one-third as long as segment, with angles somew^hat pro- 

 longed, the excision bordered by a thin bead which extends backward 

 as two short spiniform processes betAveen the extended angles; eighth 

 very deeply narrowly emarginate. Fonale, sternites not modified. 

 Length 61/2 to 71/2 mm. 



Type locality. — Dominican Republic, Sanchez. 



Types. — Holotype, male, and two paratypes, female, in the Museum 

 of Comparative Zoology; two paratypes, male and female, in the 

 United States National Museum (No. 52504) ; collected in July 1938 

 by Dr. P. J. Darlington. 



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



Kispaniola: Dominican Repubijc, Sanchez (Darlington, in M.C.Z. and U.S.N.M.). 



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



Remarks. — This species is very distinct by the exceptional develop- 

 ment of the male characters. The details of the emargination of the 

 eighth sternite are unique among the Cryptobia, and the foveae of the 

 fourth and fifth sternites reach their greatest development in this 

 species. It is, however, a typical member of the genus as herein 

 defined. 



I have received no record of its habits. 



5. BIOCRYPTA IIAITIA, new species 



Description. — Rufopiceous, head and pi'onotum somewhat darker. 

 Head with eyes small, separated from base by about four times their 

 diameter, by one and one-half times from apex; basal segment of 

 antennae a little over half as long as head, about as long as distance 

 between them ; antennal grooves feeble ; with moderately coarse punc- 

 tures, distinctly umbilicate, dense at base, sparse in front where they 

 are obscured by the dense but irregular ground sculpture. Pronotum 

 with irregular impunctate median band not marked by series of punc- 



