460 BULLETIX 182, UNITED STATES NATIONAL MUSEUM 



rather dense but obsolescent, very shallow; with scarcely a trace of 

 ground sculpture. Ahdomen with sparse and fine indistinct sub- 

 muricate punctures; without distinct ground sculpture. Length, 2 

 to 2% mm. 



Type locality. — Cuba, Tapaste, Sierra Bonilla. 



Types. — Type, February 29, 1930, and one paratype from Rangel, 

 Sierra del Rosario, Cuba, February 9, 1930, in the collection of Alex- 

 ander Bierig, Habana, Cuba. [In 1937 Bierig recorded also one 

 "hypotype" in his collection. An example sent to the United States 

 National Museum in 1938 (No. 62698) is labelled "cotype" but appar- 

 ently is not more than a hypotype.] 



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



Cuba: Tapaste in the Sierra Bonilla (Bierig, 1931), Rangel in the Sierra del 

 Ilosario (Bierig, 1931), Camoa in the province of Hahana (Bierig, in 

 U.S.N.M.), Buenos Aires in the Trinidad Mountains (Darlington, in M.C.Z. 

 and U.S.N.M.). 



Specimens examined. — I have seen only the one "cotype" in the 

 United States National Museum and two specimens from the Museum 

 of Comparative Zoology. 



Remarks. — This species is very distinct because of the f oveate vertex 

 as well as by the impunctate pronotum. The color pattern is likewise 

 unique in our fauna. 



The types were found under bark of fallen logs. 



LXXIII. Genus HOLISUS Erichson 



HoUsus EmcHSON, 1839b, p. 298. 

 Piestomorphus Motschxtlsky, 1858, p. 666. 

 Hyptioma Casey, 1906, p. 359, 362. 



Genotype. — H. analis Erichson (designated by Duponchel, 1841). 

 Of Piestomorphus.^ P. ater Motschulsky (monobasic) ; of Hyptioma., 

 H. cuhensis Casey (monobasic). 



Diagnosis. — Form very much depressed ; head and pronotum with- 

 out dense umbilicate punctures; head not margined beneath or behind 

 the eyes ; antennae widely separated at anterior margin of head, outer 

 segments pubescent from the fourth joint; labrum bilobed; fourth 

 segment of maxillary palpus shorter and much more slender than the 

 third ; labial palpus similar to maxillary ; gular sutures united ; lateral 

 margin of pronotum tripled, the lines united anteriorly; anterior coxal 

 cavities partly closed by a pair of sclerites behind the spiracles; front 

 coxae very large, exserted; posterior coxae contiguous, "triangular"; 

 first and second abdominal sternites absent ; intersegmental membranes 

 with a pattern of irregular rounded sclerotized areas arranged in 

 longitudinal rows; femora unarmed beneath; tarsi 5-segmented. 



