542 SEKEICOKNIA. 



finely punctured propleurae, as well as in having the prosternal process not grooved to 

 the apex, &c. 



10. Glyphonyx tenuis. 



Elongate, very narrow, shining ; black, the elytra sometimes testaceous, with the suture broadly, and in one 

 specimen tbe margins also, black, or with an indeterminate brownish stripe extending from the shoulders 

 downwards; the antenna3 brown, with the basal three joints testaceous, the legs flavous; somewhat 

 thickly clothed with yellowish-cinereous pubescence. Head sparsely, finely punctate; the strongly 

 reflexed margins of the front meeting at an acute angle in the centre ; antennae extending to far beyond 

 the hind angles of the prothorax in the male, shorter in the female, joint 3 shorter than 2. Prothorax 

 about as long as broad, the sides rounded in front and feebly sinuate behind ; the hind angles acutely 

 produced, slightly divergent ; the lateral carina short, not reaching the middle, the inferior marginal 

 carina feebly sinuate behind, and gradually diverging from it ; the surface sparsely, finely punctate ; the 

 basal plicae distinct. Elytra about two and three-fourths longer than the prothorax, and of the same 

 width, narrowing from the basal third, and somewhat pointed behind; coarsely punctate-striate, the 

 interstices almost flat and sparsely rugulosely punctate. Prosternum and propleurae with scattered 

 punctures, those on the propleurae coarse ; metasternum and abdomen thickly, finely punctate ; prosternal 

 process acuminate, margined to the tip. Posterior coxal plates feebly dilated in their inner third. 



Length 4, breadth 1-liy millim. (c? $ .) 



Hab. Mexico, Teapa in Tabasco (H. II. Smith). 



Four specimens — two of these have the elytra testaceous, with the suture broadly 

 infuscate, one has a brownish stripe on the elytra extending from the shoulder down- 

 wards, and the other is black, with the humeri slightly paler. This species chiefly 

 differs from those with an acuminate and completely margined prosternal process in 

 its very narrow, elongate shape and elongate thorax; the lateral carina of the thorax does 

 not extend to the middle, and the inferior marginal carina is feebly sinuate behind. 



11. Glyphonyx nigritus. (Tab. XXIII. fig. 25, underside of prothorax.) 



Glyphonyx nigritus, Cand. Compt. Rend. Soc. Ent. Belg. 1878, p. cxcvi (Elat. Nouv. ii. p. 52) \ 



Hab. Mexico, Puebla, Cordova (Salle), Motzorongo in Vera Cruz (Flohr), Atoyac in 

 Vera Cruz (H. H. Smith), Teapa in Tabasco 1 (Salle, coll. Janson) ; Guatemala, Chiacam 

 and Chacoj in Vera Paz (Champion). 



Apparently a common insect in the Mexican State of Vera Cruz, whence we have 

 received a long series of specimens. This very small species is somewhat fusiform in 

 shape, and black or piceous in colour, with the antennae and legs testaceous, the surface 

 thickly clothed with yellowish-cinereous pubescence ; the thorax is convex, arcuately 

 narrowed in front. It may be separated from all the allied forms by the prosternal 

 process being very little narrowed behind, rounded at the tip, and completely margined, 

 with the median portion behind the coxae dull and rugulose. The lateral carina of 

 the thorax extends from the tip of the hind angle to near the apex * ; the inferior 

 marginal carina is widely separated from it anteriorly, and sinuous behind. The 



* Described as " angulis posticis haud carinatis." 



