1850.1 233 



cate; the terminal spur is tolerably large and curved. The tarsi are filiform, 

 the first joint very small, inferior, the 2d equal to the rest united. The antennae 

 are slender and not much longer than the head; the first joint is a little longer 

 than the 4th, the 3d is a little shorter than the 2d, which is about one half as 

 long as the first ; the 4th 8th are nearly equal, and cylindrical ; the 9th and 

 10th triangular, a little longer than wide; the 11th oval, about equal to the 

 10th ; these last three are compressed, and about twice as wide as those which 

 precede. 



A. Stoutii, nigro-picea, capite magno, scabro, fronte concava, thorace 

 punctulato trapezoideo, postice angustato, antice vage impresso, elytris cylin- 

 dricis, subtiliter rugosis. Long. 'SB. 



San Francisco, California, given me by my friend Dr. A. B. Stout, to whom 

 1 take pleasure in dedicating it. Body dull black ; head large, obtuse, covered 

 with coarse granulations, with a few erect black hairs ; front deeply concave ; 

 mandibles thick and prominent, apex acute. Thorax narrower than the head 

 with the eyes, not wider than long, truncate at base and apex, narrowed behind, 

 sides almost straight, deflexed sides scabrous, with erect black hairs ; 

 disc finely punctnlate, broadly transversely impressed before the middle ; 

 ww^h a very obsolete longitudinal line extending from base to apex. Elytra as 

 wide as the head and eyes, elongate, cylindrical, finely punctulate and rugous=, 

 with small confluent wrinkles, which are less dense and more distinct towards 

 the base. Scutellum very small, impressed. Beneath finely and densely punc- 

 tulate, pectus covered with long yellow hair. 



Derobrachl'S Serv. 



D. geminatus, piceus, nitidus, thorace valde transverse, antice non angus- 

 tato, parce punctulato, lateribus quadrispinoso, spina antica minore, elytris 

 lasvigatis, margine angustiore reflexo. Long. 2*9. 



This very large species was collected by Dr. Henry, U. S. A., at Albu- 

 querque, New Mexico, and kindly sent to me. It is easily distinguished from 

 all the other species, by having in addition to the three usual large spines, a 

 smaller one formed by the anterior angle being produced outwards. The elytra 

 are entirely smooth, except at the base, where a few indistinct rugae are visible; 

 the lateral reflexed margin is much narrower than in the other species ; the 

 suture presents scarcely a trace of the spine at the apex ; the abdomen is smooth, 

 the pectus is covered with short yellow hair. The antennas (of the female) are 

 scarcely half as long as the body, slender, with the three first joints polished 

 and sparsely punctured ; the third joint is feebly sulcate longitudinally. The 

 legs are precisely as in the other species. 



Callichroma Latr. 



C. plicatum, viridi-aeneum, sericeum, thorace inaequali transversim plieato, 

 abdomine rufo, antennis pedibusque nigris, femoribus rufis apice nigris. Long. 

 1-25. 



Mexican Boundary, collected by Mr. Clark; another specimen found in 

 Texas by Lieut. Haldeman. In size and form exactly resembles C. splendidum 

 ic., but differs very much in the sculpture of the thorax and uniform green 

 color of the upper surface. 



Eburia Serv. 



E. muti c a, picea, fusco pubescens, thorace subcylindrico, lateribus paulo 

 rotundatis, ad medium vix spinosis, tuberculis 4 atris nitidis ante medium 

 ornato (exterioribus in latere sitis), elytris sat dense punctatis, callo basali 

 exteriore, posticoque interiore minoribus, apice truncatis. Long. '67 -SS. 



This interesting species was first found by Lieut. Haldeman at Tampico, and 

 I have recently obtained a specimen collected at New Braunfels in Texas, by 

 Mr. Lindheimer. The thorax is scarcely longer than wide, and slightly rounded 

 on the sides ; the lateral spine is represented by a mere elevated point ; the disc 

 is sparsely punctured, but the hair obscures the punctures ; before the middle 

 there are two shining black tubercles, and on each side, nearer the ante- 



