MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 427 



7. BELONUCHUS COGNATUS Sharp 



Belonuclius cognatus Shakp, 18S5, p. 429. — Bernhaueb and Schube;bt, 1914, p. 

 369.— ScHEEEPEXTz, 1933, p. 1377. (Not Fauvel, 1891.) 



Description. — Piceous black, abdomen piceocastaneous with two 

 apical segments rufotestaceous. Head with sides arcuately expanded 

 behind eyes and rounded into base, but with posterior angles marked 

 by a ridge; eyes separated from base by fully twice their length; in 

 front with a rather feeble impression about one-third as long as head ; 

 punctures large, umbilicate, and impressed but very sparse even at 

 sides; with fine strigulose ground sculpture. Pronotum about one- 

 tenth longer than wide, widest at anterior angles, sinuately narrowed 

 to rounded basal angles ; with each discal series .reduced to a single 

 puncture, and with only three or four lateral punctures; with ground 

 sculpture a little less distinct than on head. Elytra with moderate 

 punctures somewhat impressed, generally separated by their diameter 

 or more by uneven intervals; surface indistinctly coriaceous. Abdo- 

 men with moderately sparse submuricate and excavated punctures; 

 with trace of ground sculpture. Male^ eighth sternite rounded but 

 very feebly emarginate at apex. Fem^ale., eighth sternite rounded and 

 not at all emarginate. Length, 9 to 10 mm. 



Type locality. — Panama, Bugaba. 



Types. — In the British Museum. 



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



St. Vincent: (British Museum). 



Trinidad: (Bryant, in Cameron collection), ward of Montserrat (Busck, in 

 U.S.N.M.). 



South America: Venezuela (Bernhauer and Schubert, 1914 ; Cameron collection) , 

 Argentina ( Scheerpeltz, 1933) ; Colombia, Venezuela (British Museum). 



Central America: BritivSh Honduras, Guatemala, Nicaragua, Panama (Sharp 

 1885; Bernhauer and Schubert, 1914; British Museum) ; Guatemala (Cam- 

 eron collection). 



Specimens examined. — I have seen three examples from St. Vincent 

 in the British Museum, two from Trinidad in Dr. Cameron's collec- 

 tion, and two from Trinidad in the United States National Museum. 



Remarks. — This species is at once distinguished from all others in 

 our fauna by the single puncture in the dorsal "series" of the pronotum. 

 It differs from haemorrhoidalis of South America in having the entire 

 two apical segments pale. 



I find no record of its habits. 



8. BELONUCHUS AGIUS Erichson 



Belonuchus agilis Erichson, 1840, p. 423.— DuVal, 1857, p. 37.— Chevbolat and 

 Fauvel, 1863, pp. 432, 433.— Bernhauer and ScHinjERX, 1914, p. 369. — Lenq 

 and MuTCHLER, 1914, p. 406.— Bernhauer, 1921, p. 170.— Gowdey, 1926, p. 12. 



Belonuchus chevrolati Fauvel, 1863, p. 432.— Bernhauer and Schubert, 1914, p. 

 369. — Lenq and Mutchler, 1914, p. 406. 



