224 MEMOIRS ON THE COLEOPTERA 



Nothopleurus Lac. 



This genus is adopted by Bates, and apparently with ample 

 justification, though rejected by LeConte. Three species are cited 

 by the former author as composing the genus so far as known, of 

 which mandibnlaris Harold, (= gnatho \\ Lee. and dentiger Cr., 

 catalogue name) now stands in our lists under the genus Mallodon; 

 the other species are the type, named cbeninus by Lacordaire, and 

 gnatho White. 



Stenodontes Serv. 



The species of this genus are of large size, subdepressed form and 

 strongly of the Mallodon type in general facies, but the mandibles 

 are alw r ays acutely unidentate near the base internally, with the 

 internal fringe less dense, the sides of the prothorax obliquely sinuate 

 at base and denticulate at the extreme base as w r ell as more an- 

 teriorly, with the surface subsimilar in the sexes and without the 

 sharply defined male mirror-like areas of Mallodon, and, finally, 

 the prosternum is carinate posteriorly, a character unknown in 

 Mallodon. Stenodontes is exclusively West Indian in habitat. I 

 have a considerable series from Cuba and one apparently collected 

 in extreme southern Florida and recognize three very obvious 

 species, of which the largest is apparently chevrolati Gahan., the 

 male being 59 mm. in length, excluding the mandibles, which are 

 13 mm. long and the female 52 mm.; the male antennae only extend 

 to slightly behind the middle of the elytra, becoming rufescent, 

 and are not almost as long as the body as stated of damicornis 

 by Lacordaire. The two other species seem to be undescribed and 

 may be known as follows: 



*Stenodontes cubensis n. sp. Male oblong-oval, broad, very moder- 

 ately convex, polished and black throughout, the tarsi piscescent; head 

 moderate, not closely, very irregularly punctate, coarsely across the 

 vertex and more remotely thence to the base, finely on the epistoma and 

 almost punctureless elsewhere, the median line broadly impressed except 

 basally; antennae very slender, extending to apical third of the elytra, 

 black throughout, the apical joint about as long as the distance between 

 the eyes; prothorax nearly as in chevrolati but relatively much smaller, 

 shining, feebly and irregularly punctulate and uneven, being broadly 

 convex sublaterally in apical two-thirds, with a depression behind the 

 convexity, the sides steeply sloping and densely, coarsely punctato-rugose, 

 with a shining ridge near the median elevated part, and between this 

 and the sides, a very irregular elongate smooth spot, the margin with 



