266 My. E. J. Miers on Crustacea from 
sembles /. nucleus. Colour (in spirit) light purplish or yel- 
lowish ; the smallest example has reddish markings. Length 
and breadth of the largest example (a female) about 84 lines 
(18 millim.); length of chelipede, when extended, 1 inch 
7 lines (40 millim.). 
Five specimens have been retained for the British Museum 
from Goree Bay. The largest male, which is but little 
smaller than the female above mentioned, has the carapace 
rather more strongly and closely granulated than the other 
specimens. In the adult females the postabdomen completely 
conceals the sternal surface; in a smaller example which ap- 
pears to be of this sex, length and breadth nearly 5 lines 
(10 millim.), the postabdomen occupies little more than one 
third the breadth of the sternum. 
The length of the posterior and postero-lateral spines of the 
carapace is so much greater than in L. nucleus that I cannot 
regard the distinction as of less than specific value when taken 
in connexion with the other characters | have mentioned. In 
the young examples, however, the spines are less developed. 
There is in the collection of the British Museum a young 
specimen from the Canaries (f. MacAndrew, Esq.) which I 
refer to this species. 
EBALIA. 
The specimens of this genus, and of the allied Phlyaxia 
(which, | am inclined to think, cannot be retained as generically 
distinct), present such great individual variations of sex and 
age that their determination is extremely difficult, and is more- 
over complicated by the insufficiency of the figures and de- 
scriptions of several of the species. It is therefore not with- 
out much hesitation that I have described the following as 
new ; and it is possible that a comparative examination of the 
types would have enabled me to identify one or more of them 
with previously described forms, or that a larger series would 
have shown that the distinctions are not in all cases of specific 
value. 
Ebalia tuberculata, sp.n. (Pl. XIV. fig. 3.) 
In this handsome species the carapace is subrhomboidal, 
rather convex, and covered with numerous small but prominent 
granulations, which are numerous and crowded on the promi- 
nent parts of the carapace, but absent upon some of the de- 
pressions—as, for instance, on the deep concavities behind the 
antero-lateral margins. The front is obtusely truncated or 
obscurely emarginated; a longitudinal narrow ridge passes 
