296 
SUPPLEMENT 
In General Hardwick’s collection is a crab which Mr. Gray 
has appropriated to a new genus named Gomeza. It is 
apparently intermediate between Corystes among the orbicu- 
lar crabs, and Leach’s genus Atelecydus, having the long 
antennae of the former, with the short claws, and somewhat 
of the shape of the latter. The thorax is ovate and convex ; 
over the eyes are two spines with denticulated margins ; the 
outer antennae, longer than the body, are ciliated above and 
below ; the eyes are enclosed in a pit, larger than the stems. 
The specimen, (!■ bicornis , is pale yellow (when dry) ; the 
thorax covered with white granules. This species inhabits 
the Indian ocean. 
The DromIjE seize with their hind feet alcyones, the valves 
of shells, and other bodies, under which they shelter them- 
selves, and which they cany along 'with them. Some have 
pronounced the cancer dromia to be venomous. 
Our Dromice Indica has the thorax subglobose ; the back 
smooth, evenly convex, covered with short hairs ; the front 
bifid, with an obscure central inferior tubercle ; each side 
with five roundish tubercles, distant ; the upper edge of the 
front, and of the carpus, tubercular. Our figure is from a 
specimen in possession of General Hardwick, which inhabits 
the Indian ocean. 
According to Rumphius, the Ranine come to land, and 
climb even to the tops of houses ; but from the form of their 
feet, this appears to be impossible, or at all events of very 
small probability. 
We have now to speak of the macrourous decapods, and 
shall first make a few general remarks on the genus Asta- 
cus. 
This genus, in consequence of the fresh-water species which 
is found throughout all Europe, and universally used as food, 
is one of the most generally known, and one of the most 
studied, in the whole class of the Crustacea. There are few 
