﻿250 LE CONTE.— SYNOPSIS OF THE 



propygidium finely, pygidium strongly sparsely punctured. Breast clothed with 

 rather short yellow hair. 



Male with the club of the antennae a little shorter than the stem ; the abdomen 

 slightly flattened in the middle, the penultimate segment with an obtuse rough trans- 

 verse elevation near the tip, the last segment with a triangular excavation deeper at 

 the apex ; spurs of the posterior tibiae long, slender, acute and nearly equal, the inner 

 one fixed, and a little shorter. 



28. L. calceata, obscure castanea, antice angustior, capite dense confluenter punctato, clypeo tenue 

 marginato, etnarginato, thorace rude subconfluenter punctato, linea dorsali leevi, lateribus vix serratis 

 parce fimbriatis, elytris rugose punctatis, subcostatis, pectore flavo-villoso, antennis laste flavis, tibiis 

 posticis (maris) calcare interno lato brevi, unguiculis dente acuto armatis. Long. -75. 



One male, Texas, Mr. H. Haldeman. Eemarkable for the characters of the poste- 

 rior tibiae and tarsi, though otherwise allied to the preceding. Body oblong, slightly 

 narrowed in front, dark reddish brown. Head very densely punctured, clypeus emar- 

 ginate, with the margin narrowly reflexed. Thorax more than one-half wider than 

 the head, short, coarsely and subconfluently punctured, with various small spaces 

 smooth ; punctures smaller and more dense towards the apex, which is broadly foveate 

 each side ; dorsal line smooth entire ; sides hardly serrate, obtusely angulated, slightly 

 fimbriate. Scutellum with two groups of punctures. Elytra not shining, rugosely 

 punctured, with moderately distinct costae, margin slightly fringed ; pygidium sparsely 

 punctured, slightly flattened at the middle. Breast clothed with rather short but 

 dense yellow hair. Abdomen punctured ; claws armed with an acute moderate sized 

 tooth at the middle. 



The male has the club of the antennae as long as the stem ; the abdomen broadly 

 concave, the penultimate with a deep posterior medial line, and two rough transverse 

 elevations near the anterior margin; the last segment is very broadly excavated ; the 

 inner spur of the posterior tibiae is very short, broad, flat, obtuse and concave, the 

 outer one is long, flattened, and somewhat acute ; the first joint of the posterior tarsi 

 is very much thickened and produced externally. 



From the peculiar sexual characters I am inclined to believe that this should be 

 separated as a group, but not knowing the female, I cannot indicate any distinctive 

 characters applicable to both sexes. 



29. L. marginalis, oblongo-ovata, convexa, testaceo-rufa vel fusco-picea, nitida, pedibus castaneis 

 capite densissime punctato, clypeo tenuiter marginato, emarginato, tborace punctis magnis vagis 

 insequaliter sitis, spatio laevi utrinque relicto, elytris rugosis punctatis, costa submarginali fere integra, 

 pygidio fortiter punctato, pectore flavo-villoso, unguiculis dente magno armatis. Long. -70 — -80. 

 New York. Nearly of the same form as L. fraterna, but differing by many charac- 

 ters. The color is entirely bright reddish-brown, or else blackish-brown with the 

 legs and antennae red : the head is sculptured as in L. fraterna : thorax not twice as 

 wide as the head, twice as wide as long, narrowed from the base, rounded on the sides, 



