Atlantie Coleoptera. 219 
and spring I met with several individuals at ‘ the Mount ” 
(a region adjoining the Curral das Romeiras ravine) which 
I have no doubt whatsoever are conspecific with my 
original example, and which I now feel satisfied cannot 
be separated specifically from the TY. custos. Indeed a 
sufficient series has convinced me that the quadricollis 
can scarcely be upheld as even a well-defined ‘ variety,” 
—the particular examples which accord with my original 
one being merely a trifle smaller and paler than the rest, 
and possibly a little more parallel in outline; so that 
I would desire to suppress the quadricollis as a mere un- 
important phasis (if indeed a ‘phasis” at all) of the 
custos, and to cite, consequently, as an additional synonym, 
the 1’. tetracoderus of the Baron Harold’s recent Catalogue 
(394, A.D. 1868) ,—a title which he imposed upon my 
supposed species in consequence of the name quadricollis 
having been preoccupied for a T’rechus, by Putzeys, in 
1847, 
p- 59 (genus Bremprpium). 
(Sp. 182) Bembidiwm concolor. 
It appears to be necessary to change the name of this 
insect, that of concolor having been pre-occupied by 
Kirby (Fna. Bor. Am. iv. 54) for a Bembidium during 
the previous year, 1837. And this perhaps is less to 
be regretted, since M. Brullé’s “ description,” published 
in Webb and Berthelot’s ponderous work in 1838, is so 
marvellously maccurate that it simply amounts to no 
description at all. Having given a full diagnosis of it in 
1864, and called attention to the exact points in which it 
is more especially peculiar, I need not insert a fresh one 
here, but will merely propose for it the title of fortunatum 
(the insect being a very characteristic one in the Cana- 
rian archipelago), citing its changed synonymy as 
follows :— 
Bembidium fortunatum. 
Bembidium concolor, Brullé [nee Kby. 1837], in Webb 
et Berth. (Col.) 58 (1858); Woll., Cat. Can. Col. 70 
(1864); Id., Col. Atl. 61 (1865). 
Hab.—Canarienses (in Fert. soli hactenus haud ob- 
servatum); per margines aquarum, necnon ad rupes 
aquosas, hinec inde vulgare. 
