176 Mr. J. Nietner on new Ceylon Coleoptera. 



description, the labrum being emarginated in front, the second 

 joint of the maxillary palpi exhibiting nothing unusual, &c. As 

 to the species which I have established, I feel very certain that 

 they are new and good ones, as it would appear, from the quo- 

 tations in Lacordaire, ' Gen. des Col.,^ that, since Dejean's de- 

 scriptions, no new ones of Indian species have been published. 



These insects live in the manner of the European Feronidse, 

 but appear to affect rather damp localities ; some of them take 

 freely to their wings, and fly commonly into houses in the even- 

 ings during the rainy weather, 



58. Distrigus costatus, N. 



D. nigerrimus, nitidus, subtilissime parce punctulatus, ore pedibus- 

 que piceis, tarsis auteuuisque castaueis, palpis brunneo-testaceis. 

 Long. corp. 4f lin. 



Capite, clypeo fronteque leviter excavatis, hac impressionibus 2 la- 

 teralibus semilunaribus profundissimis rugulisque noiinuUis trans- 

 versis ; niandibulis fortiter sulcatis ; meuti deute maguo excavato ; 

 tborace longitudine parum latiore, breviter obcordato, lateribus ro- 

 tundato, basin versus angustato, basi truncato medio leviter emar- 

 ginato, antice lateribus fortiter deflexo, dorso posticeque piano, basi 

 longitudinaliter profunde 2-impresso, inter impressionibus leviter 

 transversim rugose, ad marginem ant. et post, obsolete sulculato, dorso 

 rugulis nonnullis transversis subtilibus, linea med. lougitud. subtili 

 extremis profuiidis diviso ; elytris profunde striatis, interstitiis fere 

 planis, puucto ad striam 2'" medio obsolete ; tmsis dorso fortiter 

 3-costatis ; prosterno piano. 



Sub quisquiliis in ripis lacus Colombensis communis. 



Apparently closely allied to D. impressicoUis, Dej. However, 

 if the description given in the ' Spec. Gen.' embraces all the 

 characteristics of this latter species, mine is undoubtedly dif- 

 ferent from it. Dejean says nothing about the costee on the 

 back of the tarsi, which are the principal characteristic in my 

 species ; nor are such costse of general occurrence or of so little 

 importance that it could be supposed they had been left un- 

 noticed by Dejean for these reasons. I cannot possibly call the 

 thorax of my D. costatus " subquadi'ate ;" it is rounded at the 

 sides, narrowed behind, and cut away at the base. The striae of 

 the elytra of my species are not punctured in the bottom, as 

 those of the D. impressicoUis are stated to be. In mentioning 

 the inter-antennal impressions, Dejean would certainly not have 

 overlooked the depression in the centre of the forehead, nor that 

 of the clypeus, which distinguish my insect, had they existed in 

 the one he described. The former is round, the latter trans- 

 verse. I further fail to discover in my sj)ecies the '^reflet un 

 peu changeant" of the elytra, and that the base of the thorax is 



