﻿260 LE CONTE SYNOPSIS OF THE 



ventral segment is transversely protuberant, and rough with elevated punctures, while 

 the last segment is slightly impressed transversely. The spurs of the posterior tibiae 

 are free in both sexes. 



51. L. s u b in u c i d a, oblonga eonvexa, subcylindrica, piceo-rufa, pruinosa, capite dense punctato, clypeo 

 refleso subeniarginato, tborace confertim baud fortiter punctato, elytris fortius punctatis, brevissime 

 pubescentibus, costa submarginali distincta, pectore flavo-villoso, unguiculis breviter dentatis. Long. 

 •72 — 75. 



Found by Mr. Arthur Schott, of the U. S. and Mexican Boundary Commission, on 

 the journey from Laredo to Ringgold Barracks. Body oblong cylindrical, convex, 

 uniform reddish, with a pruinose lustre. Head large, closely punctured, clypeus 

 scarcely sinuate in front, but strongly margined. Thorax more than one-third wider 

 than the head, finely and closely punctured, sides rounded subserrate, sparsely ciliate. 

 Elytra more strongly punctured, with very short procumbent hairs in each puncture, 

 sutural costa broad, submarginal one distinct. Pygidium sparsely punctured, shining. 

 Abdomen punctured at the sides. 



52. L. g 1 a b ri e u 1 a , oblonga, eonvexa, testaceo-rufa, subpruinosa, oapite dense punctato, clypeo reflcxo 

 haud ernarginato, tborace confertim subtilius punctato, elytris fortius punctatis, glaberrimis, costa sub- 

 marginali obsoleta^ pectore flavo-villoso, unguiculis breviter dentatis. Long. -64. 



Kansas, near the Rocky Mountains. Agrees with the preceding in sculpture, but 

 is smaller and somewhat more robust, the surface is less pruinose, the punctures of 

 the elytra support hairs so much smaller that they are hardly visible, and the sub- 

 marginal costa can hardly be seen. The sexual characters are precisely as in the 

 preceding. 



More full series may show the propriety of regarding this as a race of the preceding 

 species, but at present it seems sufficiently distinct to entitle it to a separate name. 



Geoup XIV. 



I have placed in this group a single species having the appearance of those of the 

 next group, but differing by the more robust form, and by the mandibles being visible at 

 the tip. The head is small and hairy, the clypeus deeply concave and rounded ; the 

 last joint of the maxillary palpi is hardly oval, and not impressed; the mandibles 

 are visible and tolerably prominent. The antennse are 10-jointed. The thorax is 

 hairy and not narrowed at the base. The last ventral segment is very short, as in 

 the two preceding groups, and the penultimate of the male is not impressed. The 

 claws are 'armed with a small tooth at the middle. 



53. L. gl ab r ip enn is, oblonga, minus eonvexa, aequaliter fortiter punctata, clypeo rotundato, concavo, 

 tborace brevi, lateribus subangulatis, elytris haud costatis glabris, capite tborace scutelloque saturatio- 

 ribus longe pubescentibus, pectore longissime villoso, pygidio parce punctato et pubescente. Long. -53. 



One male collected on the Rio Grande by Mr. A.. Schott of the United States and 



