JAN. — MAR. 1857 ] Descriptio7is of new Ceylon Coleoptera. 177 
17. TiicJioptcryx immatura. N. 
T. prcEcedenti similis, differt tamen colore supra oeneo-testacea 
subtus testacea, antennarum art. 3-11 nigrescentibus'; differt etiam, 
corpora crassiore, magis quadrato, capite paulo majore, thorace mi- 
nus convexo, parum ampliore, elytris abdomen totum vel fere to- 
tum obtegentiis. Pedes, antennae etc. omnino prsccedentis. Long, 
corp. \ lin. 
In prsecedentis societate specimina nonnuUa legi. 
Of somewhat the appearance of an immature individual of the 
former but sufficiently distihct to be formed into a new species. The 
insect is altogether of a different appearance imparted to it by the 
greater general plumpness of the body, the larger head, the less 
convex but at the same time possibly still ampler thorax, the alto- 
gether more quadrated shape, etc. The remark regarding the exact 
number of abdominal segments left uncovered by the elytra, applies 
to this and all other species as well. The present one has generally 
the last two segments uncovered. 
18. Trichopteryx invisihilis. N. 
T. ovata, subdepressa, subparallela, pilosa, supra obscure senea. 
subtus picea, pedibus, abdomine, antennis oreque testaceis. Long, 
corp. vex \ lin. 
Thorax amplus, elytris sesqui minor, convexus, angulis pos- 
ticis humeros vix superantibus. Elytra oblonge quadrata 
angulis rotundatis, subdepressa, truncata, abdomen totum vel fere 
totum obtegentia. Coxae posticse approximatae. Tarsi typicis 
minus elongati, art. 3° praecedentibus baud multo longiore. 
Cum T. cursitante victitat ; frequenter legi. 
A very pretty and very distinguished species. Its most striking 
peculiarity consists in the posterior coxae which are as little distant 
from e ach other as those of the anterior legs, and almost touch 
each other, and also in the shortness of the tarsi. The head with 
the antennae, the mesosternum, the tibige, which are incrassated in 
the middle, the posterior coxae with regard to the enlargement are 
quite typical. However, the thorax and elytra differ again from 
those of T. cursiians, (which in every respect may be looked upon 
