PROCEEDINGS OF ‘UNITED STATES NATIONAL MUSEUM. 49 
Vol. VI, No.4. Washington, D.C. Jume 20, 1883. 
minute, and naked appendages, obscurely divided into a large proximal 
and a small distal segment. In the adult female the appendages of the 
second to the fifth somite are similar, approximately alike in size, appar- 
ently all ovigerous, and each appears to be composed of only two seg- 
ments, of which the distalis about half as long as the proximal. None 
of the specimens seen are carrying eggs. 
Five specimens give the following measurements in millimeters: 
Station— 
1152. | 1152. | 1043. | 1097. | 1097. 
SOX - 8 oe eee oe ne eee nw ee cence cen nn en ene nenee Young.| of ro Q f°) 
Length, tip of rostrum to tip of telson. -..-.-..--.------.----- 15. 0 23.5 43.0 24.0 40.0 
Length of carapax, including rostrum .......---------------- 8.5 13.0 23.7 13. 4 PPA 
UGH STON TOSOLOM soon =e on ema cecemn ens wenteneasce= 2.5 4.5 8.1 4.6 8.0 
Breadth at bases of antennal spines .----.-.----------------- 4.1 6.0 11.0 6.2 10.2 
Greutest breadth, including spines 5. 5 8.5 15. 6 9.0 14.5 
Length of cheliped -..................- 27.0 34. 0 68. 0 40. 0 57.0 
Length of mer BS Jobt onodso Sapsesoe see 10.5 15. 0 30. 0 18.0 24.0 
Length of carpus...........--..-....- 1.5 2.5 5.2 2.6 4.3 
Length of che = soe Sosisaesabesaeeae 11.0 15. 0 30. 0 18.0 24.5 
Length of dactylus - Bode cence on 4.7 6.4 14.0 hed 11.4 
Length of first ambulatory leg ----...- 13.5 20.0 38. 0 21.0 35. 0 
PO AIMEGOE OL GVO -r).hiscis-siee's4 oes tesa =i 1.3 reir 3. 0 1.8 3.0 
LEGS a 11 (AG OVC Se a el te a a a 1.4 2.1 | 4.0 2.2 4.0 
PERM MGM UOISU Mes fo oa we onlata daw cieniocnacls/cusdcouetdees 2.0 3.7 8.0 3.9 8.0 
Specimens examined. 
a | y No. of speei- 
g £ 3 mens. 
. ~ 
3 Locality = S 2 ~ 
a W.1 = 2 
g N. lat. ong. J z FI 3 9 s 
Bi 8 a ee 
S (7) a taal 
7 A a E e 
OFF MARTHA’S, VINEYARD 
o 7 Guy! 1881. 
1038 39 58 70 06 146 | S.Sh. Sept. 21|11ly.1] 0 
1882. 
1097 39 54 69 44 158 | fine S. | Aug. 11 2) 0 
1098 39 53 69 43 156 | fineS. Aug. Tb ea 1; 0 
1152 39 58 70 35 115 s. Oct. 4 2 1y. 
OFF DELAWARE BAY. 
1881. 
1043 88 39 foe 1d sae Ss. Oct. 10|1 
| 
In the specimen from station 1152, after preservation in alcohol for a 
short time, the coloration had apparently not changed very materially, 
and was very striking. The whole dorsal surface of the carapax and 
abdomen was light red, lightest on the abdomen and darkest on the ros- 
trum and spines of the carapax. The chelipeds and three pairs of am- 
bulatory legs were very intense bright red, except the digits of the chelz 
Proc. Nat. Mus. 88——4 
