Royal Physical Society. 137 



ferently shaped thorax distinguish it ; and a tendency which it 

 has to curl itself up like an Agathidium will suggest what it is. 

 Distributed over all Europe, and generally common. In 

 Scotland and England it is scarcer; but in France and Germany 

 it is very common. Fairmaire says it is found almost all the 

 year round in vegetable detritus, principally on the banks of 

 lakes and marshes. 



Exotic species. 



38. C> marginicollis, Lucas. 

 Catops marginicollis, Lucas, Expl. de l'Algerie. Anim. Art. ii. p. 224. 

 pi. 21. fig. 4. 



" Capite nigro, granario ; thorace subgranario, nigro, lg * 

 ferrugineo marginato, angulis posticis subacu- /&\ 

 minatis; elytris nigris striatis subtilissimis con- / \ 

 fertissime punctulatis ; corpore infra nigro, sub- > — 

 tiliter granario; pedibus antennisque ferrugineis. I 



"Long. 2 J lin., lat. II lin. 



" The head is black, granulated, and scarcely pu- \ 

 bescent. The maxillary and labial palpi, as well as the 

 antennse, are entirely ferruginous. The thorax pubescent, very 

 lightly granulated, black, with the lateral margins ferruginous ; 

 it is very gently convex, rounded on the lateral parts, with the 

 angles on each side of the base less projecting, and a little less 

 acuminate than in C. celer, Luc. The scutellum is black, gra- 

 nulated. The elytra, of the same colour as the scutellum, 

 pubescent, have a very fine and very dense punctuation ; they 

 are striated, and the striae are sufficiently well marked. All 

 the body below is of a deep brown, and is very finely granulated. 

 The legs are entirely ferruginous*.^ 



This species was taken by M. Lucas at Oran, in the west of 

 Algeria, under stones, in the end of February. 



The outlines of this and the following species are taken from 

 the figures given in M. Lucas' work. 



39. C. rufipennis, Lucas. 

 Catops rufipennis, Luc. Expl. d'Algerie, Anim. Art. ii. p. 224. pi. 21. fig. 3. 

 "Capite nigro, granario ; thorace subtilissime granario, Fig. 40. 



nigro, ad latera posticeque rufescente marginato ; 



elytris granariis runs, ad suturam utrinque uni- 



striatis ; corpore infra nigro ; pedibus rufis tibiis- 



que fusco-maculatis. 

 "Long. 21 lin., lat. 1 lin. 



"This is smaller than C. celer, from the same 

 country (Algeria), and cannot be confounded with it, 

 * Lucas in loc. cit. 



