MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 461 



Remarks. — This genus is restricted to the Western Hemisphere, 

 where it is represented by a considerable number of species, each 

 being generally very rare in collections. It was described as a 

 xantholinid but seems to be a normal member of the true Stayphy- 

 linini. 



Tlie two West Indian species described by Erichson have been 

 cataloged as occurring only in South America and have therefore 

 been overlooked by students of the West Indies fauna. They were 

 described from St. John and St. Vincent without mention of any 

 South American localities. I believe I have recognized them both 

 in the present series. 



I have seen 26 examples of this genus from the West Indies. These 

 belong to three species of which one is new. 



KEY TO WEST INDIAN SPECIES OF HOLISUS 



1. Labium carinate 2 



Labium not carinate 1- debilis 



2. Black tlirougtiout, except for luster 3. laevis 



In great part rufous or testaceous 2. guildingii 



1. HOLISUS DEBILIS Erichson 



Holisus debilis Erichson, 1839b, p. 300. — Lacobdaiee, 1854, p. 65. — Beenhaueb 



and Schubert, 1914, p. 321, 

 Hyptioma cubensis Casey, 1906, p. 362.— Eichelbaum, 1909, p. 162.— Casey, 1910, 



p. 106. — Bernhauer and Schubert, 1914, p. 320. — Schekrpeltz, 1933, p. 1326. 

 Holisus cubensis (Casey) Casey, 1910, p. 106. — Lenq and Mutchleb, 1914, p. 



406.— Scheebpeltz, 1933, p. 1324. 

 Holisus rtifQtiiger Cameron, 1922, p. 117.— Scheerpeltz, 1933, p. 1326. 

 Holisus erythrodeius Fauvel, MS — Cameron, 1922, p. 117. 



Description. — Head piceous or rufopiceous, pronotum, elytra, and 

 abdomen rufous or rufotestaceous, elytra more or less infuscate es- 

 pecially apically. Head quadrate, as wide as long; with coarse and 

 indistinct umbilicate punctures evenly scattered and generally sepa- 

 rated by about their diameter, in front arranged in denser series to 

 outline a Y-shaped elevation; surface with distinct longitudinal 

 strigulae. Pronotum suborbiculate, the sides nearly straight but hind 

 angles not at all prominent ; with coarse punctures scattered over sur- 

 face except along middle, very little denser posteriorly ; surface with 

 distinct diagonal strigulae throughout. Elytra rather finely and 

 densely punctate, the surface shining but feebly coriaceous. Abdo- 

 men sparsely and moderately finely submuricately punctate; with in- 

 distinct transverse strigulae. Length, 3 to 41/0 mm. 



Type locality. — St. John. Of rufoniger, Haiti; of cubensis^ 

 Habana, Cuba. 



Types. — In either the Hope Museum, Oxford, or the Zoologische 

 Museum, Berlin. Of rufoniger^ in collection of Dr. Cameron; of 

 cubensis^ in Casey collection, U.S.N.M. No. 48241. 



