18 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
Specimens examined—Continued. 
Z 5 No. of speci 
5 = mens 
; Locality. = 3 
5 a Nature of bottom. 3 Eo 
a | N.lat. W.long. | 5 = @ 
= > Oo ro g a 
ce : ot ae 
oo oO 
7) 5 = | E 
OFF MARTHA’S VINEYARD 
—Continued. 
fo} / ” ° ‘ us 1881. 
940 | 39 54 00 69 51 30 134 hrd. S. sponges. Aug. 4/1 would 
1038 | 39 58 00 70 06 00 146 S. Sh. Sept. 21 | 1 Saha 
1882. 
1097 | 39 54 00 69 44 00 158 Fne. S. Aug. 11} 1 
1152 39 58 00 70 385 00 115 S. Oct. 4.) 3 
OFF DELAWARE BAY. 
1881, 
1043 | 38 39 00 73 11 00 139 Ss. Oct. 10 2); 0 
Stimpson’s B. longispina was based on very young males, the length 
of carapax in his measurement of a single specimen being equal to 
14.5™", and the B. brevispina on a very large female in which the 
carapax was 49™™" in length. A. Milne-Edwards’s specimens were evi- 
dently small, although he apparently translates the measurements 
given by Stimpson and does not indicate the exact size of the speci- 
men figured. In the series of specimens which I have examined the 
largest are connected with the smallest by a complete series, and 
though none of the specimens are as large as the type of Stimpson’s 
brevispina, the larger ones, both male and female, approach if closely 
enough in the length of the lateral spines of the carapax, etc., to make 
it clear that the forms described by Stimpson belong to the same species. 
The accompanying table of measurements will show this quite as well 
as any description. 
In specimens shortly after being placed in alcohol, and before the 
colors had changed materially from those in life, the dorsum of the cara- 
pax was dull red, the color being almost wholly upon the tubercles and 
granules, while the ground between was grayish, though the spines and 
teeth of the margin were brighter red than the general surface from a 
slight deposit of color between the tubercles and granules. The ven- 
tral surface of the carapax, the antennule, antenne, external maxillipeds, 
sternum, abdomen, and the proximal portions of the ambulatory legs 
were pale red or tinged with red. The chelipeds were specked and 
slightly mottled with red; the terminal third of the digits scarlet, some 
what obscured at the tips by blackish. The meral and carpal segments 
of the first three pairs of ambulatory legs, and the meral, carpal, and 
propodal segments of the posterior pair were specked and mottled with 
scarlet; the propodal segments of the first three pairs, except a narrow 
band at the distal end, and the whole of the dactyli of all four pairs 
were bright scarlet. 
