COLEOPTEBA OF KANSAS AND EASTERN NEW MEXICO. 



AMBLYCHILA SAY. 

 A. Cjliiulriibrinis SAY, Trans. Am. Phil. Soc. IV, 409. 



The specimen figured (Tab. II, fig. 1), was found by Capt. Pope on the Llano 

 Estacado; it is very large (1 28 inches long), and in form is altogether similar to 

 the specimen figured by me in the Proceedings of the Academy of Natural Sciences, 

 vol. vii. p. 32. The punctures of the elytra are however much stronger, being in 

 fact hardly smaller than those which are scattered in irregular series. The costie 

 of the elytra are more elevated, and the internal one extends fully to the posterior 

 declivity. The legs are thicker, and the posterior tibiae are entirely straight. Two 

 other specimens were collected by Dr. Wm. A. Hammond, U. S. A., on the Platte 

 river, about 100 miles above Fort Kearny. They agree in sculpture with the 

 specimen from the Llano Estacado ; one of them, which I consider as a male, has 

 rather narrower elytra than the other, and has also the thorax more rounded on 

 the sides : otherwise there is no difference between them. A larger series of speci 

 mens will indicate the nature of the strongly-marked differences of sculpture. 



As confirming the correctness of the view expressed by Lacordaire regarding the 

 identity of A. cylindriformis with the Californian A. Plccolominii, I may add, that 

 having sent to Baron Chaudoir a figure and description of the labrum of the speci 

 men found at Fort Union by Major Siblcy, I was informed by that distinguished 

 entomologist that he can find no appreciable difference between the figure and the 

 labrum of the Californian specimen now in his cabinet. The figure given by M. 

 Reiche is therefore incorrect, as already surmised. 



MICRIXYS LEC. 



ITI. distinctlis, rubens, flavo-pilosus, capite thoracequc grosse punctatis, hoc transverse obovato, 

 postice valde, angustato, lateribns valde rotundatis, elytris dorso sulnlcpressis, striis valde cribratis, 

 macula transversa lateral! ad medium ornatis, apice summo, pedibus are antennisqne piceis, his 

 articulo Imo rufo. Long. -3. Tab. II, fig. 2. 



Micrixys distinctus LEG. Proc. Acad. Nat. Sc. VII, 220. 



Panagacus distinclus HALD. Stansbury s Expedition to Great Salt Lake, 3T3. 



Eugnathus || dialinctus LEG. Trans. Am. Phil. Soc. X, 375. 



New Mexico : one specimen found by the late Richard Kern, Esq. This genus, 

 unfortunately established under a preoccupied name, differs remarkably from 

 Panagacus by the head not being constricted into a neck posteriorly, and by the 

 mandibles being thick, dilated, obtuse, and deflexed at the apex. 



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