The Genus now under consideration has been named Rogonus 
by one author, and Raptor by another ; and not knowing which 
is entitled to priority, I have followed the Baron Dejean in adopt- 
ing the former, not doubting that he had just reasons for so doing. 
I am also inclined to believe, that either no characters have 
hitherto been published of this genus, or that they have not 
yet reached this country ; I have therefore been under the neces- 
sity of drawing the best I could from our three species, as well as 
a specific description of the beautiful individual selected for illus- 
tration, it never having been before described, although it was 
named many years since, by A. H. Haworth, Esq., after our old 
and esteemed friend the Rev. J. Burrell, E.L.S., by whom it was 
first detected in 1806 , and to whom I am indebted for specimens, 
and the following particulars : “ The Genus Raptor , confined as 
it is to three British species ( Burrellii , Haw. ; chaleeus, Marsh. ; 
and aruginosus , Steph. MSS.), is perfectly maritime; the species 
being all found in the same situation, and may be deemed sub- 
aquatic ; for in the winter, and a considerable part of the summer, 
the habitat of these pretty animals is entirely covered with water, 
which stagnates many inches deep in the low places of the marshes 
after the tide has flowed and ebbed. When these spots, which 
are first formed by a casual removal of the oozy soil for agricul- 
tural purposes, are dried, through evaporation caused by the 
summer sun, the soil cracks in various directions ; and out of 
these cracks, when any one walks across the place, the Raptores 
dart up with swiftness and in great numbers. They are princi- 
pally found in the months of J une, J uly, August, and September ; 
and if the weather be warm and dry, they may be captured, 
though in less quantity, in May and October. They associate 
with many species of Bembidium, and not unfrequently the Cil- 
lenum laterale is seen in their company. The most manifest 
habitat of our species is at Salthou.se in Norfolk, upon the salt 
marshes separated from the German Ocean by a high mound of 
pebbles and other small stones rounded by attrition, and through 
which mound the tide penetrates at its highest flow.” 
The male is somewhat smaller than the female, but both sexes 
vary in magnitude. Its food is undoubtedly similar to that of 
other Carabid<%, and the soil is productive of very few plants ; 
among these, however, the Statice Limonium (Lavender Thrift) is 
handsome and common ; it is therefore made the accompaniment 
of the plate. 
