12 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
limeters and hundredths of length of carapax) of four of the specimens 
from off Santa Cruz: 
it 2 3. 4. 
ews eee Se 
STONE SS GO OUEE OE) MUGGED Ben or See SEE Oe SOEs BOO SE CHOSE SSS BOR acne sae fof 2 2 
ene wh Of CArapax, including LOSLIMM accom --abece ess sceeph sansa ates canace | &3} 5&6) 5.4 6.0 
Breadth of carapax, excluding spines)... . cc0cet scene nees eee tesco ee cese-> |} 36] 38) 3.9) 44 
Name in hundred ths Ohlone cosw.s ose cite = sees some tenons cones See a= = aimee | 68 | 68 74 73 
Ieensth of Gheliped!); s2.o-bae sn bene cawaec cet eneccaact coe vaaegeceee pees see beee | 8.0.) 9) 0) ibaveleeeee= 
eneth OL Ghee. << <cean-mcc case n hoc tes wanoc ecu beine wnemencteon seaneacsewoae } 8.4) <3. Geeta eee 
Same in hundredths of length of carapax..--.--..ce.sccccs oo- see cecccse----- 64 | 62 48s ries ee. 
HOHE OL Chel. a5. cece ecies vont cnncas ceveec eee cme ue seedone oe eeeeeee 0.8 | J.C R0Soalaaes = 
Same in hundredthsiof. length of, carapax: . 22 - ccs2e6 je wee seen ceases canede 115 18 ee be = 
hength ob dackylus <-.csstcsesgres ste owes eee paee cua weee nt conse es ceosgs 1126 | 7) ee eee 
These Caribbean specimens are apparently specifically distinct, but 
a series of specimens from different parts of the West Indian region 
would perhaps show them to be a geographical or local variety. 
Lispognathus furcatus A. M.-Edwards. 
Lispognathus furcatus A. M.-Edwards, Bull. Mus. Comp. Zool. Cambridge, 
vii, p. 9, 1880. 
? Lispognathus furcillatus A. M.-Edwards, Rapport sur la Faune sous-marine 
dans les grandes profondeurs de la Méditerranée et de l’Océan Atlantique 
(Arch. Missions Sci. et Littéraires, ix), pp. 16, 39, 1842 (no description). 
To this species I refer, with considerable hesitation, two specimens 
dredged off Martha’s Vineyard: Station 951, N. lat. 39° 57’, W. long. 70° 
31/ 30, 225 fath., mud, Aug. 23, 1881 (male); station 1096, N. lat. 399 
53’, W. long. 69° 47’, 317 fath., soft green mud, Aug. 11, 1882 (female 
carrying eggs). 
The carapax, excluding the rostral and lateral spines, is about four- 
fifths as broad as long in the male, and slightly broader and much thicker 
and more swollen in the female. The rostral horns are acicular, very 
slightly divergent, and slightly ascending, and in the male nearly three- 
tenths as long as the rest of the carapax. The three erect gastric and 
the postorbital spines are subequal and very slender and acute, and the 
postorbital spine each side is situated slightly in front of a line from the 
middle to the lateral gastric. The cardiac spine is considerably stouter 
and a little higher than the gastric spines, and either side of it on the 
dorsal part of the branchial region there is a much smaller erect spine, 
and on a line between this and the lateral gastric there is a similar spine 
in the female, but only a minute spine or tubercle in the male. There 
are two or three minute spines or tubercles on the protuberant superior 
lobe of the hepatic region, and about as many more back of these 
on the side of the branchial region, while on the inferior hepatic lobe, 
opposite the middle of the buccal area, there is a much larger spine 
directed downward, and back of this a smaller one, near the base of the 
cheliped. The supraorbital spine is slender and about as long as the 
gastric spines, and in the male the interantennular is fully as long, 
stouter, and directed downward and curved slightly forward. The basal 
