GLYPHONTX.— MICEOGLYPHONTX. 549 



angles acutely produced, not or feebly divergent ; the lateral carina excessively fine (scarcely visible till 

 tbe pubescence is removed and the insect is viewed from the side) and extending to a little beyond the 

 middle, the inferior marginal carina very gradually diverging from it ; the surface finely and rather 

 sparsely punctate ; the basal plicae indistinct. Elytra about three times the length of the prothorax, and 

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

 interstices flat and sparsely, rugulosely punctate. Prosternum and propleuroe with a few widely scattered 

 fine punctures ; metasternum and abdomen thickly, finely punctate ; prosternal process Y-shaped, the 

 triangular intercoxal portion margined. Posterior coxal plates feebly dilated in their inner third. 

 Length 2f-3, breadth |- T 9 T millim. ( tf $ .) 



Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 



Found in abundance in Chiriqui. This is one of the smallest of the Central- 

 American species. It is allied to G. eheninits, but is less elongate and not so black ; 

 the thorax is much more transverse and more closely punctured, and has the lateral 

 carina so fine as to be scarcely visible, this carina being less divergent from the 

 inferior one than in G. ebeninus. From G. nigritus it may be known by the very 

 different form of the prosternal process, as well as by its smaller size, the less convex 

 and shorter thorax, &c. 



MICROGLYPHONYX. 



Head deeply sunk into the prothorax, convex ; front acuminate, the margins reflexed and meeting at an acute 

 angle in the centre immediately above the labrum ; the mouth placed beneath ; antennas with the basal 

 joint stout, nearly as long as joints 2-4 united, 3 much smaller than 2, 4-10 short and somewhat monili- 

 form, 11 oval, acuminate at the tip ; prothorax not margined at the sides, narrowed in front and behind, 

 with long, acute, posteriorly produced hind angles and fine basal plicoe ; scuteilum rather large, oval, flat ; 

 elytra fitting closely to the base of the prothorax, oval, the humeri very oblique, the epipleura) rather 

 broad in front and strongly sinuous and abruptly narrowed opposite the hind coxae ; prosternum broad, 

 convex, with a prominent chin-piece and a Y-shaped process behind, the intercoxal portion of the latter 

 not margined ; prosternal sutures double and excavate in front, becoming coalescent about the middle ; 

 mesosternum declivous, the borders of the cavity not raised ; metasternum very short ; posterior coxal 

 plates slightly dilated in the inner third, becoming excessively narrow outwards ; basal joint of the hind 

 tarsi a little longer than the following two joints united ; fourth tarsal joint lamellate ; claws pectinate ; 

 body apterous. 



The minute Elaterid from which the above characters are taken is a close ally of 

 Glvphonyx ; but differs from it in the complete obliteration of the lateral and inferior 

 marginal carinas of the thorax, the posteriorly coalescent prosternal sutures, the 

 more moniliform outer joints of the antennas, the very short metasternum, and the 

 apterous body. The prosternal process is formed as in the third section of Glyphonyx, 

 except that the intercoxal portion is not margined. The thorax and elytra are both 

 narrowed towards the base. The insect is unknown to Dr. Candeze. Our specimens 

 were obtained at a high elevation on the Volcan de Chiriqui, by brushing long grass 

 in a bamboo-thicket. 



