Mr. J. Nietner on new Ceylon Coleoptera. 379 



behind than others, and also as to the exact number of the 

 abdominal segments left uncovered by the elytra. The head 

 is large, but exhibits nothing abnormal or extraordinary; the 

 thorax is very large, emarginated in front and behind, with the 

 angles acute, the basal ones enveloping the shoulders ; the wing- 

 covers are subquadratic, with the angles rounded off and a little 

 narrowed behind ; the legs have the tibiae incrassated in the 

 middle, and the posterior coxae very much dilated and distant 

 from each other ; in all other respects they are typical. The 

 shape of the body is that of an egg, broadest at the shoulders, 

 gently narrowed towards the apex of the abdomen, and rounded 

 off towards the head. 



17. Trichopteryx immatura, N. 



T. praecedenti similis, diflFert tamen colore : supra seneo-testacea, sub- 

 tus testacea, anteunarum art. 3-1 1 nigrescentibus ; differt etiam 

 corpore crassiore, magis quadrate, capita panic majore, thorace 

 minus convexo, parum ampliore, elytris abdomen totum vel fere 

 totum obtegentibus. Pedes, antennae &c. omnino praecedentis. 

 Long. corp. -^ lin. 



In praecedentis societate specimiua nonnulla legi. 



Somewhat resembling in aspect an immature individual of the 

 former, but sufficiently distinct 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 tho- 

 rax, the altogether more quadratic shape, &c. The remark re- 

 garding 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 invisibilis, N. 



T. ovata, subdepressa, subparallela, pilosa, supra obscure aenea, sub- 

 tus picea, pedibus, abdomine, antennis oreque testaceis. Long, 

 corp. vix. -i- lin. 



Thorax amplus, elytris sesqui minor, convexus, angulis posticis 

 humeros vix superantibus. Elytra oblonge quadrata angulis rotun- 

 datis, subdepress; i truncata, abdomen totum vel fere totum obte- 

 gentia. Coxae posticae 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 coxte, which are as little di- 

 stant from each other as those of the anterior legs, and almost 

 touch each other, and also in the shortness of the tarsi. The 



