62 COLEOPTERA. 



with the intermediate joints less slender and less cylindrical, 

 its less convex elytra, of which the shoulders are more pro- 

 jecting, and its better defined basal thoracic keel, which is 

 more prolonged toward the front. 



38. ScYDMiENUS RUFUS, Miill. et Kunze, Mon. d. Ami- 



ensenk.,10, f. 2; Er., Col. March., i, 262; Thomson, 

 Skand. Col., iv, 91 {Cholerus)) E. C. Eye, I. c, 

 vii, 273. 



A single example of this interesting addition to our lists 

 was found by Mr. G. C. Champion in rotten wood in Hich- 

 mond Park, in March last. 



Its entirely clear rufo-testaceous colour, very short oval 

 elytra and almost globose thorax, neither of which are foveo- 

 late, readily distinguish it from all our recorded species. 

 The allied S, Hellwigii (which is not unlikely to occur here, as 

 it is found in France, Sweden and Germany) is rather larger 

 than S. rufusj with longer prothorax and elytra, and the 

 head of its male deeply excavated behind. Those who do 

 not admit ClioleruSy usually consider these two species to be 

 associated with tarsatus in the sub-genus Eumicrus^ Cast., 

 distinguished by the apical joint of the maxillary palpi being 

 merged in the sub-apical, instead of slender and distinct. 



39. Ptilium caledonicum. Sharp, Ent. Mo. Mag., viii, 



73 (described). 



Found by Drs. Sharp and Buchanan White in numbers, 

 under the bark of a dead Scotch fir at Braemar, in June 

 last. 



This insect appears to connect the abnormal P. croaticum, 

 Hampe, with P. Spencii and its allies; its thorax being 

 much broader than long, with the sides rounded in front, and 



