PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 11 
lodes depressus, CO. robustus, and Lispognathus furcatus, though neither 
Stimpson nor Milne-Edwards mentions it, and Milne-Edwards even 
apparently figures them as separate in EZ. rastellifera and C. depressus. 
Measurements in millimeters and hundredths of length of carapax. 
Station— 
865 | 865 | 865 | 878 | 878 | 922 | 865 | 865 | 869 | 87 
} 
SOX «0-2-2 --00e- eee ee gens eee nnn nooo a Fede ig aes kes a ts ea I Ne 9 
Length ofcarapax, includingrostrum-| 3.2] 5.1] 5.6] 6.8 | 11.3 /§14.4| 5.8] 60); 7.2 9.5 
Breadth of carapax, excluding spines.| 2.3/ 3.6) 4.1] 5.0] 89/120] 44) 45) 5.5 TT 
Same in hundredths of length of cara- | 72 71 73 74 79 83 76 for AG. 81 
pax. 
Length of cheliped ..--......-..-.---. 4.0} 6.5] 7.5] 10.0 | 21.0] 29.0) 68) 7.0) 80) 11.8 
Tenet of chela:+-..- 2... ..sn.2---- GO| OO: Mol eioasle gee pi kOnO | key Sul po. Galt as || Soil 47 
Same in hundredths of length of cara- | 47 53 55 62 88 89 45 47 44 49 
pax. 
HMGISnMOH eM olae =<. - cress ch oan ots 0.3) 0.6} 0.8) 13) 2.7] 3.6) 0.6].06] 0.7 1.0 
Same in hundredths of length of cara- | 10 | 12 14 19 24 26 =| 10 10 | 10 1l 
pax. 
Length of dactylus .........---....... ONG) abso ASR 250 AO SON el ait SL See ON peaks 
Length of first ambulatory leg.--..... 5.7 | 11.0 | 13.0 | 16.0 | 32.0 | 35.0] 11.0] 85/13.5) 19.8 
WeEnstOr PLrOpodus:..-+-2-s-ce0=-> ~~ - 15) 381) 35) 44) 95 /10.07) 28) 2.0) 3:3) 5.3 
GENE RRUOn CAINAS 5-26 -<;.'5)--2. aa: v2o-'s POn | SeNOn Qn 2 east le Beas See NOU, Tabu 62) 2 3.3 
Length of fourth ambulatory leg .....|.-.-.- | 80] 9.0] 10.8 | 20.0] 22.0! 90! 62/ 95] 140 
Length of propodus..........-..--.00-|.----- Batt Dee oo (rasa | GO 2 oie AiG "OS BW “40 
ORE HAO CAN PUS) sae are ae as sw aeeato 3-2 = ante a USAT af ip 2 Ee MAE ES fa esac sa Ga ee rd tS Le) | 1.8 3.0 
*Immature specimens; the others all adult, the females with eggs, even in the case of the smallest. 
The first and fourth ambulatory legs in the immature female are apparently reproduced appendages, 
which may, perhaps, account for the retardation in the sexual development of the individual. 
The specimens in the Fish Commission collections and in the Blake 
collection of 1880 appear to agree much more closely with those origi- 
nally described by Stimpson and those figured and described by Milne- 
Edwards than they do with a few Caribbean specimens which I have 
examined and which were labeled by Milne-Edwards as this species and 
returned to the Museum of Comparative Zoology. These specimens, 
two males and five females, are trom the Blake collection of 1878~79, 
station 134, off Santa@Cruz, 248 fathoms, and, though fully adult, are 
all very much smaller than any other adult specimens examined. They 
are also considerably smaller than the specimens described by Stimpson 
or Milne-Edwards. The carapax is slightly narrower than in the north- 
ern specimens, with the tubercles of the surface larger and all the spines 
longer and more slender; the postorbital process is slender and spini- 
form instead of dentiform; there is a small conical spine, much more 
acute and more prominent than in the northern specimens, on the eye, 
at the emargination of the cornea; and the ambulatory legs are more 
slender and armed with small spiniform tubercles which are much more 
conspicuous than in the northern specimens. In the males the chele 
are proportionally larger, with the bodies stouter and more swollen; 
and in both sexes the chelw and other parts of the chelipeds are armed 
with larger and more seattered tubercles, many of which, especially on 
the carpus and merus, become spiniform and conspicuous. Some of 
these differences are well shown in the following measurements (in mil- 
