1853.) | AAY 
become entirely black; at the same time the yellow at the sides and base of the 
thorax becomes reduced and gradually disappears. 
2. E.Clarkii, rufa, nitida, subtus longe pallide pilosa, clypeo nigro tenu- 
iter marginato, antice subemarginato, thorace latitudine breviore, lateribus 
rotundatis, disco utrinque vitta abbreviata punctoque laterali nigris, punctato, 
linea dorsali calloque utrinque paulo elevatis levibus, (breviter piloso ?) elytris 
sutura costisque duabus elevatis, interstitiis punctatis et strigosis, rufo-luteis 
sutura maculisque pluribus nigris, seutello, 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 antenne and 
anterior tibiz are precisely as in E. Kernii. 
3. E.Schottii, 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 antennz in the male 
is very long, and the anterior tibie have two short teeth at the apex; in the 
female the club of the antenne is shorter than the remainder, and the anterior 
tibiz are tridentate; the inferior tooth isnot, 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 Dapont(Mag. Zool. 1836,) and Tylosis 
oculatus Lec. (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. 
Srenaspis Dup. 
With this genus must be united Smileceras Lec., founded upon Cerainbyx 
solitarius Say. ‘The female of this rare species was procured by the Expedition, 
and differs from the male in having the antenne 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, subinaquali, 
irregulariter modice punctato, plagis levibus relictis, postice constricto lateribus 
dilatato tubercula laterali obtuso, elytris viridi-zneis nitidis subparallelis rugis 
profundis parcis intricatis, interstitiis elevatis convexis, parce punctulatis, femori- 
bus lete aurantiacis basi apiceque nigris, antennis nigris extrorsum rufescentibus. 
Long. 1:37. a 
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 coxe than in the other species, and the lateral tubercle of the 
thorax is not very distinct. The anterior lateral tubercle observed in 8S. 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 antenne are black, with the 
joints growing brownish red from the fourth, outwards; the articulations are 
