Mr. A. Murray on Coleoptera from Old Calahar, 1 79 



as more rounded, I think it will be as well to make a subgenus 

 for it. 



Characters the same as those of Crypfarcha, with the follow- 

 ing exceptions : — Head and epistome, instead of being rounded, 

 transverse and broadly trigonal ; body very convex and rounded 

 in form, glabrous and very shining; underside concave. 



Arhina strongyloides^ 



Creberrime Iseviter punctata, puniceo-rubra. 

 Long. 2 lin., lat. 1^ liu. 



Reddish claret-coloured; very closely and t 

 finely punctate, head more coarsely than the 1 

 rest. Prothorax broadest at posterior angles, 

 with a slight tendency to expansion ; anterior 

 angles obtuse, posterior blunt, nearly rect- 

 angular; base bisinuate. Scutellum very small. Elytra with the 

 anterior outer angles sloped off; apices rounded, truncate; pos- 

 terior angles, both exterior and sutural, rounded. Pygidium 

 partly visible. Underside finely punctate ; segments of abdomen 

 with an opaque margin. 



Only two specimens received. 



Correction on previous paper, vol. iv. p. 120. 



Agahus hydroporoides should be Celina {Hydroporomoi'pha, Bab.) 

 hydropor aides. 



I was misled into regarding this species as an Agahus by the 

 fore and middle legs having become crossed, so that on examin- 

 ing what appeared to be the fore tarsi, I found five articles, 

 which satisfied me that it could not belong to the Hydroporidse, 

 the anterior tarsi of which have only four articles. 



The Rev. Hamlet Clark, who stands preeminent in knowledge 

 of Hydradephaga, however, having, from a figure which I sent 

 him, expressed doubts as to its being an Agabus, and suggested 

 a reexamination to see if it were not a Celina, of which it had 

 the facies, I submitted it to a more careful scrutiny, and dis- 

 covered the transposition of the legs, and ascertained that the 

 apparent middle legs were really the fore ones, and that they 

 have only four articles in the tarsi, the rest having five. It 

 thus belongs to the Hydroporidse ; but its possession of a scu- 

 tellum of fair proportions shows that Mr. Hamlet Clark's divi- 

 nation from the facies was correct. 



It is of interest as being another example, in addition to those 

 I have already mentioned, of the occurrence of South- American 



