440 
COROPHIIDiE. 
oblong in form, and placed in a very advanced position 
on the lateral lobes of the head. The superior antennae 
are about one-third the length of the animal, and have 
a jointed flagellum, but little longer than the last joint 
of the peduncle, and furnished with a secondary ap- 
pendage consisting of but a single articulus ; the second 
joint of the peduncle is furnished with about twelve, and 
the third joint with ten, setose serrations on the under side. 
The inferior antennae are scarcely longer than the superior, 
and the flagellum is not so long as the last joint of the 
peduncle, and consists of four or five large articuli ; the 
last three, besides having numerous hairs, some of which 
are slightly fringed with cilia, are armed with spines 
that assume an increasingly hooked condition as they 
approach the extremity of the appendage ; these are 
evidently powerful organs, and much used in climbing, 
as observed by the late Dr. Leach. The first pair of 
legs have the hand ovate and tapering, the finger 
serrated. The second pair have the hand very large, 
oval in form, except the palm, which is slightly excavated, 
and furnished with a few plumose hairs ; the finger is 
slightly serrated upon the inner margin. The coxa of 
the first pair of legs is much advanced anteriorly, but not 
very deep, those of the three next succeeding pairs in- 
crease gradually in depth, and are each about the depth 
of its respective segment ; the coxa of the fifth pair is 
not so deep as the preceding, and subequally divided 
into two lobes. The fifth pair of legs are not longer 
than the fourth ; the sixth and seventh pairs are longer, 
and all are very robust. The posterior pair of caudal 
teeth. Although we have no doubt but that the error arises from a miscon- 
ception of the artist, yet being in so extensively circulated a work it is liable 
to mislead if not noticed. 
