272 Mr. J. Nietncr on new Ceylon Coleoptera. 



XXVII. — Descriptions of new Ceylon Coleoptera. 

 By John Nietner, Colombo, Ceylon. 



[Continued from p. 190.] 



43. Cyclosomus dyticoides, N. 



C. suborbicularis, depressus, obscure castaneus, elytris piceis fasciis 

 2 testaceis ornatis, pedibus brunneo-testaceis, tarsis, antennis ore- 

 que magis minusve brunneis. Long. corp. 4|— 5 lin. ; lat. 2^-3 lin. 



Antennae art. 3-11 depressis. Thorax transversus, antice profunde 

 semilunariter sinuatus ; basi quadratus, medio leviter subquadrate 

 emarginatus, elytris parum angustior, ante scutellum subtiliter stri- 

 gosus ; apicem versus sensim angustatus. Elytra basi subquadrata, 

 striata, fasciis 2 (una subhumerali, altera subapicali) transversalibus, 

 interruptis, interstitia 2-8 occupantibus, testaceis ornata. Pedes 

 tibiis apice 2-calcaratis, calcaribus 2-serratis, tarsis maris 2 anterio- 

 ribus art. 1-3 subtus leviter dupliciterque penicillatis, intermediis 

 for titer simpliciterque penicillatis. Prosternum subhastatum. 



In prov. occid. arenis peraridis Amararum more victitat. 



To judge from what Lacordaire says of this genus in bis 'Genres 

 des Coleopteres' (a work which, as I have said elsewhere, I look 

 upon as containing the essence of all former researches), it would 

 appear that the present species differs very materially from the 

 three others hitherto described, namely in the flatness of the 

 antennal joints, in the serrated edges of the tibial spurs, in the 

 existence of the tarsal brushes in the male, and in the colour, — 

 to say nothing of some other minor distinctions. The first three 

 of these peculiarities (too important not to have been noticed by 

 Lacordaire or any other describer of the genus, had they been 

 aware of them) add considerably to the characteristics which 

 already constitute this genus one of the most remarkable of the 

 extensive family of the Carabidse, whilst through the colour of 



