DECAPODS 29 
The outer maxillipeds do not reach the end of the antennal scale; the 
first pair of feet reach to the middle of the scale; the second pair extend 
not quite so far, and are more slender; the third pair reach nearly to or 
beyond the end of the scale; the fifth pair to the end of the antennal 
peduncle. The meral and propodal joints of the last three pairs are 
furnished with fine sete. 
Abdomen devoid of a median carina or median spines; the sixth seg- 
ment is two and a half times as long as the fifth, and between three 
fourths and four fifths as long as the telson. The telson is about as long 
as the outer branch, longer than the inner branch of the swimmeret; it 
is armed with 7 to g spinules on either side and 4 long spines at the 
end. Eggs few and very large, the greatest diameter equaling the length 
of the fifth abdominal segment. 
Dimensions.—Male, length of carapace and rostrum 19 mm., of 
rostrum 6.5 mm., of abdomen 32.5 mm. 
Distribution.—¥rom Bering Sea to off Monterey Bay, California, and 
Kamchatka; 322 to 1771 fathoms. 
Taken at the following stations of the A/satross : 
North of Rat Islands, Aleutians, 850 fathoms, station 3784. 
Southwest of Pribilof Islands, 1625, 1771 fathoms, stations 3308, 3603. 
North of Islands of Four Mountains, 1033 fathoms, station 3307. 
South of Pribilof Islands, 1401 fathoms, station 3604. 
West of Unalaska (type locality), 322 fathoms, station 3327. 
North of Unalaska, 399 fathoms, station 3329. 
Southeast of Chirikof Island, 695 fathoms, station 3340. 
East of Prince of Wales Island, 1569 fathoms, station 2859. 
Off Queen Charlotte Islands, British Columbia, 1588 fathoms, station 
3342. 
Off Destruction Island, Washington, 516 fathoms, station 3343. 
Off Sea Lion Rock, Washington, 636-877 fathoms, stations 3070, 3071, 
3°74; 3975. 
Off Monterey Bay, California, 418 fathoms, station 3127. 
Off Copper Island, Kamchatka, 1567 fathoms, station 3783. 
Relations.—The rostrum of this species approaches that of 4. rostrata 
Bate, but is considerably longer; the pleon is like that of HZ glacialis 
(Buchholz), 1. glauca Bate, and 4. mollicutis Bate in being without median 
carina and spines. 
Family PALZMONIDA. 
Genus Palemon Fabricius. 
PALAMON RITTERI Holmes. 
In this species either one or two of the seven or eight dorsal teeth are 
situated behind the rostrum, ‘Three ventral teeth. 
