GLTPHONTX. 537 



of the metasternum with coarse punctures ; prosternal process acuminate, margined almost to the tip. 

 Posterior coxal plates moderately widened in their inner third. 

 Length 4|--6, "breadth l^-lf millim. (62-) 



Hab. \ North America x 2 3 . — Mexico 3 , Saltillo in Coahuila (Dr. Palmer), Guanajuato, 

 Cordova, Yolos, Juquila, Oaxaca (Salle), Jalapa (Hbge), Orizaba (coll. Janson), Cuerna- 

 vaca, Teapa (H. H. Smith), Playa Vicente (Salle, Edge) ; Guatemala, Antigua (Salle), 

 Duenas, Guatemala city (Salvin, Champion), Panzos. Senahu, and San Geronimo in 

 Vera Paz, Capetillo, Zapote (Champion) ; Costa Rica, Cache (Sogers). 



Var. a. Larger and more elongate. (Length 6-8^, breadth 1|— 2| millim.) ( tf $ .) 



Hab. Mexico, Cuernavaca in Morelos, Atoyac in Vera Cruz (//. H. Smith), 

 Juquila (Salle) ; British Honduras (Blaneaneaux) ; Guatemala, San Geronimo 

 (Champion). 



This is the commonest and most widely distributed species of the genus within our 

 limits, and it probably extends into the United States, as there are several examples of 

 it in the Janson collection labelled " Am.-bor." The Mexican specimens referred by 

 Candeze to G. recticollis (Say) (=pumilus, Erichs.) belong here. It is very variable in 

 size and colour, but the suture of the elytra in pale specimens is, at most, faintly 

 infuscate. From the North-American G. recticollis, for an example of which we are 

 indebted to Dr. Horn, the present insect may be known, at least in the males, by the 

 squarer thorax, with the lateral carina extending almost to the apex, and widely separated 

 anteriorly from the inferior marginal one, the latter being also more strongly sinuate 

 behind, and the more sparsely and less coarsely punctured propleurse. The description 

 of the typical form is chiefly taken from a long series from Jalapa. In some of the 

 specimens (probably males) from various other localities the thorax is broader in front 

 than behind. Small females appear to have the thorax more transverse, and more 

 rounded at the sides anteriorly. 



3. Glyphonyx brevicollis. 



Moderately elongate, narrow, shining ; black or piceous, the anterior and hind angles of the prothorax more 

 or less testaceous, the lateral margins also pale in some specimens, the elytra usually more or less 

 testaceous, this colour sometimes so extended as to leave a sutural stripe only infuscate, the antennae and 

 legs testaceous ; thickly clothed with yellowish-cinereous pubescence. Head closely, finely punctate, the 

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

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

 Prothorax considerably broader than long, the sides rounded in front and feebly sinuate behind ; the 

 hind angles acutely produced and moderately divergent ; the lateral carina extending forwards to near 

 the apex, the inferior marginal carina widely separated from it anteriorly and strongly sinuous behind : 

 the surface finely and rather sparsely punctiired ; the basal plica? very fine. Elytra three times the 

 length of the prothorax, and slightly wider than it, narrowing from the basal third, and somewhat pointed 

 behind ; punctate-striate, the interstices feebly convex and rugulosely punctured ; epipleurse angulate 

 opposite the hind coxae. Prosternum and propleurse with widely scattered fine punctures, the propleurse 

 smooth at the base ; metasternum and abdomen finely and rather closely punctate, the sides of the meta- 



biol. centr.-amer., Coleopt., Vol. III. Pt. 1, June 1890. 3Z 



