524 BULLETIN 182, UNITED STATES NATIONAL MUSEUM 



Elytra with a large and deep depression along the lateral margin ; a 

 little more coarsely punctate than pronotum; surface uneven but not 

 strigulose. Abdomen not very distinctly punctate but with irregular 

 strigulae. Male, eighth sternite with a large triangular emargina- 

 tion about one-half wider than deep, the angles narrowly rounded; 

 eighth tergite quadridentate, the median pair of teeth longer and 

 separated by a notch of same size and shape as the teeth. Feinale., 

 eighth tergite with four slender processes, the inner pair a little 

 longer than the outer. Length, 2% mm. 



Type locality. — Trinidad, ward of Montserrat. 



Types. — Holotype, male, and two paratypes, female, U.S.N.M. No. 

 62452, collected on July 4, 1905, by August Busck. 



Records. — The following is the only record known to me : 



Trinidad: Montserrat (Busck, in U.S.N.M.). 



Specimens examined. — I have seen only the three types. 



Remarks. — This species is distinguished by the relatively coarse 

 punctures of the pronotum. Its robust size will also serve to sep- 

 arate it from the species with impressed elytra. 



I have no record of its habits. 



LXXXVII. Genus CONOSOMUS Molschulsky 



Conurus Stp:phens, 1829, p. 272. (Not Kuhl, 1820.) 

 Conosomus Motschulsky, 1857b, p. 54. 

 Conosoma Kraatz, 1857a, p. 431. 

 Canurus Kraatz, 1874, p. 292 (misspelling). 



Genotypes. — Staphylums littoieu»ii \A\\\\A^vi'&= G onosomus Uttoi'eus 

 (Linnaeus) (designated here). Of Gomcrus, Tachypoms pubescens 

 Gra,venhorst= Gomii^s pubescens (Gravenhorst) (designated 

 here) ; of GonosoTfui, Staphylinus littoreus lAwwdiiiWii— G omsoina 

 littorea (Linnaeus) (designated here). 



Diagnosis. — Head inclined, not margined at the sides beneath; 

 hypostomal suture and anterior part of coronal suture distinct; 

 antennae 11-segmented, inserted at sides of head; labrum trans- 

 verse; maxillary palpus subulate; gular sutures separate; anterior 

 coxal cavities closed behind by the union of the prosternum and 

 hypomera beneath the coxae ; front coxae large, exserted ; posterior 

 coxae contiguous, '^transverse"; abdomen not margined, first and 

 second sternite absent; tibiae fimbriate at tip with equal spinules; 

 tarsi 5-segmented, first segment of posterior tarsus short. 



Remarks. — The two names Gonosomus and Conosoma were pub- 

 lished in the same year (1857) apparently entirely independently 

 as new names for the preoccupied Gonunis Stephens. Gonosoma 

 has subsequently been used almost exclusively, with Gonosomus only 



