GLTPHONTX. 541 



the male, shorter in the female, joints 2 and 3 equal in length. Prothorax a little broader than long, the 

 sides rounded in front and slightly sinuate behind; the hind angles acutely produced and feebly or 

 moderately divergent ; the lateral carina extending to near the apex, a little shorter in some specimens, 

 the inferior marginal carina gradually diverging from it and feebly sinuate behind ; the surface thickly, 

 finely punctate, a narrow space down the middle of the basal half impunctate ; the basal plicae well 

 defined. Elytra two and two-thirds longer than the prothorax, and slightly wider than it, narrowing 

 from the basal third, and somewbat pointed behind ; coarsely punctate-striate, the interstices convex and 

 rugulosely punctured; epipleurse angulate opposite the hind coxae. Prosternum and propleurae with 

 widely scattered fine punctures, the propleurae smooth behind ; metasternum and abdomen closely, finely 

 punctate ; prosternal process acuminate, margined to the tip. Posterior coxal plates moderately dilated 

 in tbeir inner third. 

 Length 4$-5|, breadth 11-1| millim. ( <J $ .) 



Hab. Mexico, Tepetlapa in Guerrero, Atoyac in Vera Cruz (//. H. Smith); Guatemala, 



Duerlas (Champion). 



Seven specimens, six of which are from Mexico. Easily separable from G. quadratic 

 collis and its allies by the more approximate thoracic carina?, the inferior marginal 

 carina in the present species gradually diverging from the lateral one, less distant from 

 it in front, and more feebly sinuate behind. From the North-American G. recticollis 

 (Say) it may be distinguished by the longer lateral carina of the thorax, the more 

 coarsely punctate-striate elytra, and the more uniform coloration ; the thoracic carina? 

 are also more approximate. 



9. (xlyphonyx depressus. 



Moderately elongate, narrow, depressed, shining, thickly pubescent ; brownish-testaceous, the legs testaceous. 

 Head closely, finely punctate ; the reflexed margins of the front meeting at an obtuse angle in the centre ; 

 antennae extending slightly beyond the hind angles of the prothorax, joint 3 shorter than 2. Prothorax 

 nearly as long as broad, subquadrate, the sides slightly rounded at the apex ; the hind angles acutely 

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

 gradually diverging from it and feebly sinuate behind ; the surface somewhat closely, finely punctate ; the 

 basal plicaa very fine. Elytra two and one-half times the length of the prothorax, and of the same width, 

 gradually narrowing from about the basal third, and somewhat pointed behind ; deeply punctate-striate, 

 the interstices rather convex and closely, rugulosely punctured ; epipleurse subangulate opposite the hind 

 coxae. Prosternum and propleurae very sparsely, the metasternum and abdomen closely, finely punctate, 

 the sides of the metasternum with coarser punctures ; prosternal process acuminate, margined to near the 

 tip, the very narrow apical portion with a row of punctures down the centre. Posterior coxal plates feebly 

 dilated in their inner third. 



Length 4|, breadth 1\ millim. 



Eab. Mexico, Jalapa (Edge). 



One specimen, probably a male. This insect resembles the pallid form of G. quadra- 

 ticolUs ; but it is more flattened above, the elytra are relatively shorter, the lateral 

 carina of the thorax is short, and the inferior marginal carina gradually divergent from 

 it. In this last-mentioned character G. depressus agrees with G. propinquus, from which 

 it may be separated by the short lateral carina of the thorax, the shorter elytra, &c. 

 From the North-American G. testaceus (Melsh.), a specimen of which has been 

 communicated by Dr. Horn, it differs in its longer thorax and more sparsely and 



