MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 423 



Type locality. — Puerto Rico, Mayagiiez. 



Ty/je*.— Holotype, U. S. N. M, No. 52460, collected by me on Octo- 

 ber 5, 1935. 



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

 Puerto Rico: Mayagiiez (Blackwelder station SOB) . 



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



Remarlcs. — This species is distinguished by having only four punc- 

 tures in the pronotal series. It is also an unusually small and slender 

 species, with a violet luster on head and pronotum. 



The type was found in a mass of rotting "fruit" at the base of an 

 imported palmlike tree. 



8. BELONUCHUS TRINITATIS, new species 



Description. — Black, pronotum and abdomen more or less piceous. 

 Head quadrate, sides arcuate but not distinctly narrowed behind eyes, 

 basal angles rounded but marked by ridges ; eyes separated from base 

 by about their length ; with a concavity in front but without longitu- 

 dinal impressed line ; punctures large, impressed, umbilicate, but very 

 sparse ; with very fine strigulose ground sculpture. Pronotum scarcely 

 longer than wide, widest at anterior angles, sides straight and feebly 

 narrowed to base which is strongly rounded ; dorsal series of five punc- 

 tures, and with about five lateral punctures; ground sculpture as on 

 head. Elytra with moderately coarse punctures generally separated 

 by more than their diameter by somewhat uneven intervals; surface 

 indistinctly coriaceous. Abdomen sparsely and rather finely submuri- 

 cately punctate; with only a trace of transverse ground sculpture. 

 Male., eighth sternite flattened or concave and with a rounded emar- 

 gination about three times as wide as deep. Female^ with eighth 

 sternite truncate. Length, 8 to 9 mm. 



Type locality. — Trinidad, Department of Agriculture Stock Farm 

 at St. Joseph, 6 miles east of Port of Spain. 



Types. — Holotype, male, and four paratypes, U.S.N.M. No. 52458, 

 collected by me on January 5, 1936. 



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



Trinidad: Port of Spain ( Blaclcwelder station 130). 



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



Remarks. — This species is distinguishable by the lack of median 

 longitudinal impression at the front of the head. The shape of the 

 concavity differs between the sexes. The females have a smaller de- 

 pression, it being more nearly longitudinal but still distinguishable 

 from the linear impression of the other species. 



The types were found in cattle dung. 



