REPORT OR THE BRACHYURA. 
65 
eyes are small ; the basal antennal joint is somewhat dilated, and is armed on its outer 
margin with a laminiform tooth near the base and another at the distal extremity ; below 
the basal antennal joint there is another small tooth ; the antennal flagella are exposed 
at the sides of the rostrum and visible in a dorsal mew. The epistoma is but slightly 
broader than long. The chelipedes are slender and somewhat elongated, merus, carpus, 
and palm subcylindrical, without spines or tubercles, the palm about as long as the 
merus, the fingers small, not half as long as the palm, and armed with small teeth on 
the inner margins. The ambulatory legs are slender, with the joints subcylindrical and 
unarmed, and they decrease successively in length ; the first pair are longer than the 
chelipedes ; the dactyli in all are but slightly curved. Colour (in spirit) yellowish-brown. 
The carapace and the rostrum are clothed with curled hairs, which are absent from parts 
of the dorsal surface, the inferior surface of the body and the limbs with a very short, close 
pubescence. 
Adult 
Lines. 
Millims. 
Length of carapace to base of rostrum, nearly . 
5 
10 
Breadth of carapace, about .... 
. 3|- 
7-5 
Length of a chelipede, . . . 
9 
19 
Length of first ambulatory leg, .... 
11 
23 
Two males and a female were obtained at Bahia in shallow water (7 to 20 fathoms). 
The description is wholly taken from the adult male. In the smaller male and 
female the gastric spines are not developed and the branchial spines are quite small, the 
carina of the posterior margin of the carapace, also, is less prominent, and the chelipedes 
are smaller. 
In an adult male of large size (see PI. VIII. fig. 1, b) from the same locality and taken 
with the preceding specimens, the rostral spines are more strongly divergent, the carapace 
is somewhat more broadly pyriform and much more convex over the branchial regions, 
the spines of the gastric region are absent, those of the branchial regions very small ; the 
posterior carina of the carapace on either side of the median lobe is nearly obsolete, and 
the chelipedes are very considerably elongated. If, as is probable, this is a mere 
variety of this species above described, the generic character will require amendment in 
that which has been hitherto regarded as a most important particular, the prominence of 
the carina of the posterior margin of the carapace. 
The dimensions of this specimen are as follows : — 
Adult <$ . 
Lines. 
Millims. 
Length of carapace to base of rostrum, .... 
71 
• ' 2 
16 
Breadth of carapace, ...... 
6 
12-5 
Length of a chelipede, rather over .... 
16 
34 
Length of first ambulatory leg, about .... 
15 
32 
In a specimen, without any indication of locality, in the 
collection 
of the British 
Museum, which I suppose to belong to Notolo , pas lamellcitus, 
(ZOOL. CHALL. EXP.— PART XLIX.— 1886.) 
Stimpson, 
not only is the 
Ccc 9 
