LeConte.] 



CRYPTORHYNCHINI. 249 



iilsi) sniootli, as is not the case in any other specimens in my collection. 

 Length 4.5 mm.; .18 inch. 



Two very small specimens from Georgia have the disc and flanks of the 

 prothorax nearly smooth, and the ventral segments also smooth, except the 

 tiftli, which is ver,y finely ]Hinctured and surrounded Ijehindby a marginal 

 line, but not transversely impressed; the legs are brown. Length 2.3 mm. ; 

 .09 incli. 



I believe that these forms indicate species which the amount of material 

 at my disposal does not permit me to distinctly define, and which I shall 

 therefore abstain from naming. Careful observation of their habits and 

 collection in quantity, when possible, will enable the correctness of this view 

 to be tested in future. 



One specimen from Texas, sent by Mr. Belfrage, is, however, so dificrent 

 as to require specific recognition. 



7. T. baridium, n. sp. 



Dull black, with a l)ronze tinge; beak strongly punctured, front not 

 channeled, transverse impression feeble; head sparsely, finely punctured. 

 Prothorax deeply but not densely punctured, not longer than wide, sides 

 parallel behind, obliquely narrowed in front of the middle, scarcely con- 

 stricted at tip. Elytra at base very little wider than the prothorax, humeri 

 not prominent, slightly wider for a very short distance, then gradually nar- 

 i-owed to the tip; punctures of the rows distant, obsolete behind, interspaces 

 very finely and sparsely punctulate, with scarcely perceptible white hairs 

 in these punctulations, and in the punctures of the rows. Mesosternum and 

 metasternum coarsely and sparsely punctured; ventral segments sparsely 

 but gradually moi*e deeply punctured; fifth with a rounded impression. 

 Length 4 mm.; .16 inch. 



PHYRDENUS n. g. 



The form is precisely that of Conotrachehts anaglyptieus, but the pec- 

 toral canal is deep and terminates in the mesosternum, which is excavated 

 for almost its whole length, as in Cryptorhynchus; the claws are broadly 

 appendiculate at base. 



The beak is as long as the prothorax, slightly compressed, gibl)ous and 

 suddenly separated from the front at base; the antennal grooves are oblique, 

 as in Conoti'ac7ielus; the antennte inserted one-fourth from the tip, rather 

 slender, funicle 7-jointed; club elongate-oval, annulated. Prothorax with 

 very large, postocular lobes, concealing the eyes in great part in repose. 

 Eyes coarsely granulated; large, distant above. Side pieces of metathorax 

 moderately wide, distinct; ventral sutures straight; second and fifth seg- 

 ments a little longer than the third and fourth separately. Legs rather 

 slender, thighs feebly clavate, not toothed ; tibiae bent at the base, slender, 

 feebly mucronate at tip; tarsi with third joint bilobed; fourth long with 

 divergent, appendiculate claws. 



1. P. undatus, n. sp. 



Short and stout, blackish, densely clothed with verj' small scales forming 

 a dense crust, of a pale brown color, varied with darker on the pi'othorax, 



TROC. AMER. I'HILOS. SOC. XV. 90. 2v 



