58 lAugusf, 
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 
distinchis ; as, however, Kiesenwetter remarks that the interstices in 
6. distinctus are entirely impunctate, I am inclined to consider them 
as rather Q. caspius. Kiesenwetter remarks, also, that G. caspius and 
dutinctus 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 striae 
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. If— 2"'. 
This is a very distinct species, presenting nt 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 strise 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 
different times, are all I have seen of this insect. These specimens are 
certainly broader than they should be according to the descx'iption in 
measurements given by Kiesenwetter and Suffrian 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. 2i— 3V"; lat. U— If". 
