1853.] 441 



become entirely black; at the same time the yellow at the sides and base of the 

 thorax becomes reduced and gradually disappears. 



2. E. C la rki i, rufa, nitida, subtus Jonge pallide pilosa, clypeo nijjro tenu- 

 iter marginato, antice subemarginato, thorace latitudine breviore, lateribus 

 rotundatis, disco utrinque vitta abbreviata punctoque laterali nigris, punctato, 

 linea dorsali calloque utrinque paulo elevatis lajvibus, (breviter piloso ?) elytris 

 sutura costisque duabus elevatis, interstitiis punctatis et strigosis, rufo-luteis 

 sutura maculisque pluribus nigris, scutello, pectore, genubus tarsisque nigris, illo 

 gutta rufa ornato. Long. -42 5. 



Several females collected by Messrs. Clark and Schott. This species seems 

 very closely related to the preceding, but the pale color on the thorax extends 

 also along the middle, and the abdomen and feet are rufous; the antennae and 

 anterior tibiae are precisely as in E. Kernii. 



3. E. S c h o 1 1 i i , nigra, subtus nitida, longe pallide pilosa, supra opaca, cly- 

 peo antice truncato, fortius marginato, lateribus tenuiter marginato, vertice 

 piloso subcarinato, thorace latitudine non breviore, lateribus vix rotundatis, basi 

 media late emarginata rufescente, disco parce punctato, breviter pubescente, 

 elytris striolis obscure luteis transversis plus minusve variegatis, sutura costis- 

 que duabus elevatis, interstitiis bistriatis vage punctatis. Long. -45 '55. 



Several specimens collected at Eagle Pass by Mr. Schott, to whom I take 

 great pleasure in dedicating this species. The club of the antennae in the male 

 is very long, and the anterior tibiae have two short teeth at the apex; in the 

 female the club of the antennae is shorter than the remainder, and the anterior 

 tibiae are tridentate; the inferior tooth is not, however, elongated as in the two pre- 

 ceding species. It belongs to the same division of the genus as E. inda, but 

 the hair on the thorax is not long as in that species. The yellow markings of 

 the elytra are sometimes very abundant and confluent, at other times they are 

 hardly visible ; besides the little yellowish red line of the middle of the thorax 

 at the base, a vitta each side of the middle abbreviated at each end can some- 

 times be seen; the angle each side of the medial emargination is very distinct, 

 while in the two species above described the emargination hardly exists, and 

 the base is almost uniformly broadly rounded. 



The beautiful Dendrobias 4-maculatus J>?^^;o7i^(Mag. Zool. 1836,) and Tylosis 

 oculatus Lee. (Journ. Acad. Nat. Sc, 2d ser.2, 9) have been added to our fauna. 

 Both have been previously known from Mexico. A remarkable variety of Tra- 

 gidion coquus was also found, in which the yellow spots of the elytra are very 

 small and hardly visible. 



Stenaspis Dup. 



With this genus must be united Smileceras Lee, founded upon Cerambyx 

 solitarius Say. The female of this rare species was procured by the Expedition, 

 and differs from the male in having the antennae two-thirds the length of the 

 body. The 11th joint is not longer than the 10th, and is distinctly transversely 

 impressed; the joints from the fourth, outwards, have the external edge com- 

 pressed; the third also has a compressed edge beyond the middle. 



S. splendens, nigra, thorace latitudine plus sesqui breviore, subinaequali, 

 irregulariter modice punctato, plagis laevibus relictis, postice constricto lateribus 

 dilatato tubercula laterali obtuso, elytris viridi-seneis nitidis subparallelis rugis 

 profundis parcis intricatis, interstitiis elevatis convexis, parce punctulatis,femori- 

 bus laete auranciacis basi apiceque nigris, antennis nigris extrorsum rufescentibus. 

 Long. 1-37. 



Texas, and from Dr. Berlandiere's collection. This species must evidently be 

 referred to the present genus, although the prosternum is much less prominent 

 between the coxae than in the other species, and the lateral tubercle of the 

 thorax is not very distinct. The anterior lateral tubercle observed in S. solitaria 

 is entirely wanting, the sides being almost regularly rounded; the posterior con- 

 striction is very deep, and the base is more sinuate than in the other species. 

 The head is precisely as in the preceding. The antennae are black, with the 

 joints growing brownish red from the fourth, outwards ; the articulations are 



