MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 205 



sion posteriorly and enclosing a smooth rounded elevation; with 

 another elevation above each eye posteriorly; impressions not very 

 distinctly punctate; ninth and tenth antennal segments transverse; 

 clypeus produced at center into an angle which is nearly acute, lat- 

 eral angles strongly produced. Pronotwni subcylindrical, one-twelfth 

 wider than long, sides scarcely tuberculate but with prominences; 

 with four strong and deeply punctate transverse grooves, all but the 

 fourth interrupted narrowly at middle; intervals very convex, shin- 

 ing. Elytra one-third wider than pronotum, one-fourth wider than 

 long; entirely impunctate, but with a distinct longitudinal impres- 

 sion at middle of disk, abrupt internally, slightly diagonal; sutural 

 stria impressed ; humeral callus prominent, but without sutural callus. 

 Ahdonwn impunctate, shining. Length, 3I/2 to 5 mm. 



Type locality. — "Villa Nova," Amazon Valley, Brazil. 



Types. — One female in the British Museum. 



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



Trinidad: (C. H Bryant, in British Museum), La Brea (Morrison, in U.S.N.M.). 

 South America: Brazil (Sliarp, 1876, 1887), Bolivia (W. M. Mann, in U.S.N.M.). 

 Central America: Panama (Sharp, 1887). 



Specirrwns examinecl. — I have not examined the unique type or 

 Sharp's example from Panama. Specimens before me include one 

 borrowed from the British Museum and two in the United States 

 National Museum. 



Remarks. — There is very little difference between the Trinidad 

 and the Bolivia examples. The species is obviously widespread and 

 will undoubtedly be found throughout northern South America. 



Sharp records the type from under chips. 



3. STYLOPODUS HUMERALIS (Cameron) 



Mcgalops hvmcralis Cameron, 1913b, p. 327.— Leng and ISIutchler, 1917, p. 198. 

 Mcgalopsidia humeralls (Cameron) Scheerpeltz, 1933, p. 1142. 



Description. — Black, elytra yellow with humeral callus, base, and 

 apex narrowly black. Head and antennae much as in lasviventris. 

 Pronotum a little longer than broad, a little wider in the middle, 

 equally narrowed in front and behind; with sides evenly rounded; 

 narrower than head and elytra; with four coarsely punctate trans- 

 verse impressions on each side, the first are separated from each other 

 by narrow, smooth space on middle of disk ; the second are separated 

 by a broader space bearing a large puncture, the third by a wider im- 

 punctate space, the fourth follow the posterior margin and are not 

 interrupted. Elytra about as long as pronotum, scarcely transverse; 

 sutural callus, sutural stria, and short punctate stria on disk well 

 marked. Abdomen as in laeviventri^^. Length, 4 mm. (From 

 Cameron.) 



