208 My. E. J. Miers on Crustacea from 
7 lines (15 millim.) ; length of the larger (right) chelipede 
when fully extended 1 inch 23 lines (31 millim.). 
There are in the Museum collection examples from the 
Mediterranean and Sicily. 
In two specimens, length and breadth of largest about 
74 lines (16 millim.), which otherwise do not differ much 
from the foregoing, the prominent tubercles of the gastric, 
cardiac, and branchial regions are developed into blunt spines, 
a similar spine exists near the distal end of the upper surface 
of the arm, and the upper surface of the palms is strongly 
granulated and tuberculated; they may be designated var. 
spinifer. 
In another set of specimens from Goree Island, which 
appear entitled to rank as a distinct variety, the front is much 
less prominent, more deflexed and rounded at its distal end, 
the regions of the carapace less convex and less prominently 
granulated, with the interspaces and the sides towards the 
lateral margins also more or less granulated; arm generally 
shorter. They may be designated var. atlanticus. 
The five specimens I have seen are females. Colour in 
spirit more or less reddish ; length of the largest a little over 
7 lines (15 millim.); breadth 8 lines (over 17 millim.). 
Length of larger chelipede when extended about 1 inch 1 line 
(nearly 28 millim.). 
Another adult female differs from any of the preceding in 
having the carapace almost altogether destitute of tubercles or 
spines; some very small and obscure granulations exist on 
the branchial and cardiac regions and on the interspaces be- 
tween them and on the posterior margin; the upper surface 
of the hands is nearly smooth. In the less acute rostrum and 
in general form this specimen nearly resembles the preceding 
variety, of which it is probably an extreme condition. The 
colour is a nearly uniform deep red. Length of carapace 
about 63 lines (14 millim.) ; breadth about 7 lines (15 millim.). 
Length of larger chelipede when fully extended about 1 inch 
(253 millim.). 
L. pulchellus, A. M.-Edwards*, from the Cape-Verd 
Islands, has the front in the figure represented as truncated, 
concave on each side in front of the orbits, and may be dis- 
tinct from any of the foregoing. 
Lambrus (Parthenopoides) bicarinatus, sp. n. 
In this, which I must regard as a distinct species, because 
I have observed no examples connecting it with any of the 
* Nouv. Arch, Mus. Hist. Nat. iv. p. 53, pl. xvi. figs. 7-9 (1868), 
