256 BULLETIN 18 2, UNITED STATES NATIONAL MUSEUM 



I have seen from the West Indies 113 specimens representing three 

 species. 



KEY TO WEST INDIAN SPECIES OF STILOMEDON 



1. Head without ground sculpture ; umbilicate punctures crowded 2 



Head in part with ground sculpture ; umbilicate punctures not crowded. 



1. insularum 



2. Pronotum densely rugosely punctate 3. audanti 



Pronotum rather sparsely discretely punctate 2. connexum 



1. STILOMEDON INSULARUM (Cameron) 



ilcdon {Ncomcdon) insularum Cameron, 1923, p. 399. — Scheekpki.tz, 1933, p. 



1250.— Blackwelder, 1939a, p. 103. (Not insulare Casey, 1905.) 

 StiJomcdon insularum (Cameron) Blackwei.der, 1939a, p. 103. 



Deseription. — Piceous to rufous, pronotum generally a little more 

 rufescent with lighter spots at the anterior angles, elytra generally 

 paler than pronotum, tip of abdomen paler. Head quite distinctly 

 emarginate at center of base with a short vertical groove in base of 

 vertex, eyes small, at about twice their length from base; posterior 

 angles moderately rounded; labrum with median tooth large, very 

 prominent above, additional denticles very small and close to median; 

 gular sutures rather narrowly separated but converging posteriorly; 

 surface with moderate umbilicate punctures, not very dense, intervals 

 flat and with dense ground sculpture especially anteriorly. Prmiotum 

 wdth sides moderately converging posteriorly ; not or feebly impressed 

 on disk; midline feebly channeled posteriorly; with moderately fine 

 punctures which appear to be obsoletely umbilicate; with fine indis- 

 tinct ground sculpture. Elytra not distinctly punctate, rather densely 

 set with posteriorly directed tuberculi which bear the fine but long 

 pubescence ; without ground sculpture except along suture. Abdomen 

 very finely and densely asperately punctulate ; pubescence rather long. 

 Mcde^ seventh sternite unmodified ; eighth sternite with a very broad 

 and very shallow emargination, but this bordered by long hairs directed 

 to the sides. Female, sternites not modified. Length, 3i^ to 4 mm. 



Type locality. — Jamaica. 



Types. — Unique female type in the collection of Dr. Cameron. 



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



Cuba: Santiago de las Vegas (Diininock, in U.S.N.M.), Cayaiuas (Schwarz, in 

 U.S.N.M.). 



Jamaica: (Cameron, 1923), Trinityville (Blackwelder station 428). 



Hispaniola: Haiti, Port-au-Prince (Audant and Ducasse, in U.S.N.M.) ; Domini- 

 can Republic, San Francisco Mountains (Busck, in U.S.N.M.), Mount Quita 

 (Darlington, in M.C.Z.). 



Specimens examined. — I have seen the type in Dr. Cameron's col- 

 lection, six examples in the United States National Museum, two that 

 were borrowed from the Service Technique (and later presented to 

 the United States National Museum), one in the Museum of Com- 

 parative Zoology, and one collected by me in 1935-37. 



