REPOET ON THE BRACHYURA. 
129 
and mesogastric sutures distinct. The front projects but slightly beyond the level of the 
orbits, and is divided by a median notch into two truncated or sinuated lobes, which are 
separated by another notch from the antero-internal angle of the orbit, whose margins 
are interrupted by fissures or notches, and there is a distinct emargination immediately 
below the tooth at the exterior orbital angle. The antero-lateral margins are shorter 
than the postero-lateral margins, and are regularly divided into five teeth, of which the 
first or exterior orbital tooth is united more or less completely with the next ; there is 
often a small tubercle on the subhepatic region below the interspace, between the first 
and second antero-lateral teeth. The endostome or palate is not longitudinally cristated. 
The post-abdomen in the male is usually five-jointed, with the third to the fifth of the 
normal segments coalescent, and it completely covers the sternum at base. The eyes are 
small. The basal antennal joint reaches the infero-lateral process of the front, but not the 
extremity of the subocular lobe of the orbit, which is often prominent and spiniform, and 
the flagellum occupies the inner orbital hiatus. The merus-joint of the exterior 
maxillipedes is often somewhat produced at its antero-external angle. The chelipedes in 
the adult male are moderately developed, and are nearly as in Xantlio. The ambulatory 
legs are of moderate length, with the joints neither carinated nor spinose, and the dactyli 
styliform and straight. 
The species, which never attain a very large size, have been described by A. Milne 
Edwards in his work above referred to, and, so far as known, with two exceptions, inhabit 
the American coasts. One species, Panopeus xanthiformis, A. Milne Edwards, has 
been recorded from rather deep water (73 to 118 fathoms). Two, Panopeus africanus, 
A. Milne Edwards, and Panopeus blanchardi, A. Milne Edwards, occur on the West 
African coasts. 
To the species enumerated by A. Milne Edwards I may add the following : — 
? Panopeus laevis, Dana. Brazil (Coll. Brit. Mus. ). 
Panopeus pacJcardi, Kingsley. Florida; Key- West. 
Panopeus subverrucosus [Ozius subverrucosus, White). ? This species 
is represented in the British Museum Collection by a carapace only. 1 
Panopeus herbstii, var. serratus. 
Panopeus serratus, Saussure, Rev. et Mag. Zool., ser. 2, vol. ix. p. 502, 1857 ; Mem. Soc. Phys. 
d. Geneve, vol. xiv. (2), p. 432, pi. i. fig. 7, 1858. 
Here is somewhat doubtfully referred a small female from Bermuda, obtained in 
shallow water. 
In this specimen the carapace is convex, with several transverse striae upon the 
1 The Australian Panopeus acutidens, Haswell, is to be referred to the genus or subgenirs Heteropanope, Stimpson, 
and is perhaps identical with Heteropanope dentatus (Adams and White). 
(zool. chall. EXP. PART XLIX. 1886.) 
Ccc 17 
