PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM, 425 
naked; the digits are similar, longitudinal, slightly longer than the 
basal portion of the chela, compressed, slightly curved downward 
toward the tips, but the prehensile edges straight and very minutely 
serrate. 
The ambulatory legs are very nearly equal in length, and slightly 
overreach the chelipeds; the merus is about as long as the left chela, 
and roughened’ with small spines on the upper and under edges; the 
propodus is shorter than the merus, compressed, smooth, and ciliated 
along the edges; the dactylus is a little longer in the second than in the 
first pair, but in both shorter than the propodus, very strongly com- 
pressed, very slightly twisted, about ten times as long as broad, and 
thickly ciliated along both edges, except for a short distance along the 
lower edge near the tip. 
The female is smaller than the male, and has proportionally shorter 
ambulatory legs, and chelipeds very much shorter and much more alike. 
The right chela is only about a third longer than the carpus, little more 
than a third as broad as long, and the digits are slender and nearly as 
long as the basal portion. The left cheliped is proportionally stouter 
than in the male, and thus approximates to the right; the chela itself is 
scarcely more than a third longer than the carpus. The ambulatory 
legs overreach the chelipeds by nearly or quite the full length of the 
daetyli, but all the segments have very nearly the same relative propor- 
tions as in the male. 
The eggs are few in number and very large, being about a millimeter 
. in diameter in alcoholic specimens. 
In young males the chelipeds and ambulatory legs are similar to those 
of the female. 
Measurements. 
We cat tere 9 
(Sta. 877). (Sta. 878.) (Sta. 878). 
mm. mm. mm. 
Length from front of carapax to tip of abdomen..----.----------------- 19.0 16.5 16.0 
Leneth of carapax along median line --.-........-..------------------ fies 6.3 5.6 
Length of carapax from front to cervical suture ..-..-------.--.------- 5.3 4.7 4.0 
Breadth of carapax in front. .-..--- SOE econ os cae se eben eee eemene eee (5 || 8} 4.8 
Menetaoineye-Stallkse ase e aap ica se <1ajarctet slain = nlne\aree = aim omelets eee 2.9 2.6 2.5 
GReMesmOlmeleniOmeye soo os. 5-ccsce sens scnecewieecce== 2 ee seeenanemo= ail 1.8 iy 
* Length of peduncle of antennula...-...--..------ 6.0 5.5 5.1 
Length of ultimate segment of the same. --..-.-------- | 2. 4 O02 
Length of peduncle of antenna beyond front -.--..---- 4.5 4.0 3.4 
Length of ultimate segment of peduncle of antenna. -.-..-.-. 2A 1.9 1.7 
Menno mrighincheliped) s-5 2) 2ss- cus a2- - =F snes se eio=2 ae a5 32.0 24.8 15.5 
een ANOMALOUS eee nee sana so roe wiencctcecccenes bSeteeeasecte s 7.0 5.5 4.0 
Ree ENO le uO p Olu S see ee see ts sae aeae 2 lls eMeacinee oie eee Seca s = 12. 7, 10. 0 5.4 
rer MVOMm TOPO Mise enemas <= soe = <2 => -seilewnn in years e ene =n 4.5 3.4 1.9 
Menmuben mcaiylos: s2stle lo. S22l itis sb lochec tes eee bal ots ek 5. 6 ASS 278 
Mianeioimletincteliped = 2-2. ce<ciei-.-1-'0'2 <2 = 2 ones oeinnaenin= eee ew noe = =m 28.0 24. 0 als 
Length of carpus-.---..-- Pesier Sour Sac dy js ete ee eee settee aoe 7.6 6.3 4. 0 
iLeiecla @it jomeyeulingy. |e eR SS epec eee Sane Beret Sone Boe 5: Seeopete = setseccc 10.0 8.0 Heal 
ES Tes HUM Ose LL OMB Roser sen fest cs 258 ole cleanse mates mio ticltaele ce aetaie 21 ae 1.3 
Leman ai @Ek oii 5. oo2 See bees S50 ee eee Hee pBeCOR SE aecr cD EoraEosesrasssce Bal 4.5 ore 
Length of first ambulatory leg, right side..-..-.----.-------------+----- 34.0 28. 0 21. 0 
Taylan? (nile. SS See a bao o ee Ue eee EEE EEE Ene Sod brOc ace See ae eens 8.4 6.8 9.2 
Iban ai Waging wos -eeAe os cane e atone Osea noob ooaeDearEcoren sae 6, 8 ; 5. 3 ons 0 
Length of second ambulatory leg, right side. -......-------------------- 34.5 28.2 21. 5 
ILE ETN Oh TORO OTTO aka So pn SSE E NEE GUE SEES EEE Suecbone serbno Boneececrs 8.9 7.2 5.8 
ici Mmotedachy lus tens seg emer tek Jose scden blastn saaeiseee mer scmaciash 8.0 7.0 6.0 
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