68 



[August, 



both the preceding species they are quite impunctate and shining. The 

 internal striae are also finer, and the punctures placed rather more 

 closely together. 



Two $ specimens in Mr. Crotch's collection are all I have seen ; 

 but I have two ^ examples from the Continent under the name of 

 distinctits ; as, however, Kiesenwetter remarks that the interstices in 

 Q. distinctus are entirely impunctate, I am inclined to consider them 

 as rather G. caspius. Kiesenwetter remarks, also, that Q. caspius and 

 distinctus may probably have to be united ; but if I am correct in my 

 determination of the present species, the punctuation of the elytra 

 opposes this view. 



7. G. colymhus, Er. Ovate, not very convex, above bluish-black, 



slightly shining, the elytra punctate-striate, tne internal strise 

 rather finer than the outer, the interstices thickly and evidently 

 punctured, almost transversely strigose, so that the upper-side is 

 not so shining as in the other species ; under-side black, margin of 

 thorax and elytra, and legs (including the claws), breast, and 

 extremity of abdomen, rufo-testaceous. 



Long. 3— 3i'" ; lat. 1|— 2'". 

 This is a very distinct species, presenting at first sight the greatest 

 resemblance to G. marinus, which it much approaches in size and form ; 

 the colour of the under margin of the elytra, and of the claws, however, 

 readily distinguish it from that species ; the striae of the elytra, also, 

 are finer, and the interstices are more evidently punctured than in 

 marinus ; the peculiar sculpture of the elytra distinguishes it from all 

 the other species. 



Six specimens in Mr. Crotch's collection, taken apparently at 

 difi'erent times, are all I have seen of this insect. These specimens are 

 certainly broader than they should be according to the description in 

 measurements given by Kiesenwetter and Sufirian of G. colymhus ; in 

 other respects, however, they agree. 



*** — Under margin of elytra brassy, claws (anterior at base, the 

 others entirely) black. 



8. G. marinus, Gyl. Ovate, not very convex, above bluish-black, shining, 



the sides brassy, the elytra strongly punctate-striate, the internal 

 striae being scarcely finer than the outer ; the striae are deep, 

 especially posteriorly, so that there the interstices are even convex ; 

 under-side brassy-black, legs red, with the exception of the claws. 



Long. 2|-3r"; lat. W-W". 



