306 BULLETIN 182, UNITED STATES NATIONAL MUSEUM 



along middle smooth space but scarcely discernible toward sides; with- 

 out ground sculpture. Elytra as long as wide, as wide as head, con- 

 jointly emarginate behind ; punctures rather feeble and sparse, some- 

 times somewhat muricate. Abdomen sparsely and very finely sub- 

 muricately punctured. Male, seventh sternite slightly flattened 

 apically at middle; eighth with a rounded emargination half as de«p 

 as wide. Female, eighth sternite rather strongly and prominently 

 rounded. Length, 3 to 3I/2 mm- 



Type locality. — "Cuba ; probablemente en toda la isla y durante todo 

 el ano. Isla de Pinos." 



Types. — In the collection of Alexander Bierig. One "cotype" is in 

 the United States National Museum (No. 52724). 



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



Cuba: (Rioi'iir, IJKSO). Rnnjfiel, Sierra del Kdsario (Bierig, in T'.S.N.M.), Cayamas 



(Schwarz, in U.S.N.M.), Soledad (Darlingtou, in M.C.Z. and U.S.N.M.). 

 Isle of Pines: (Bierig, 1!)3G). 



Spe&linens exatnined. — In addition to the "cotype" I have seen 11 

 examples in the United States National Museum and 8 from the Mu- 

 seum of Comparative Zoology. 



Remarks. — The above description is taken entirely from the speci- 

 mens in the United States National Museum. The species is distin- 

 guished from all others in the West Indies by its obsolete pronotal 

 punctation. 



I find no record of its habits. 



XLI. Genus SCOPOBIUM Blackwelder 



Scopobium Blackwei.deu, 1939a, pp. 97, 107, 121. 



Genotype. — Ophiomedon mithracinum Ciimeron= JScopohmm an- 

 thracinum (Cameron) (original designation). 



Diagnosis. — Punctures dense and umbilicate; antennae normal; lab- 

 rum broadly semicircularly emarginate ; fourth segment of maxillary 

 palpus acicular, longer than greatest width of third; gular sutures 

 very approximate throughout their length; neck about one-half as 

 wide as head; prosternum not dilated under coxae; hypomera pro- 

 longed in a lobe partly behind the coxae; anterior coxal cavities en- 

 tirely open behind; front coxae very large, exserted; middle coxal 

 cavities confluent; posterior coxae contiguous, "conical"; first and sec- 

 ond abdominal sternites absent, third strongly carinate at middle of 

 base; basal half of front tibia with a concavity lined with diagonal 

 ctenidia; front tarsi broadly expanded; apex of posterior tibia with 

 a ctenidium on each side. 



Remarks. — This is a very distinct genus, which combines cert^iin 

 features of Aderocharis and the Domene-Lathrobium series. It is at 

 present represented by only one species. 



