220 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
The three males and one of the females give the following measure- 
ments in millimeters: ; 
Waocality f.0escs a. CC hee coterie eee al. b. C: b. 
BSOK coin. canensee ent e= eames aces eee ere é 3 é 2 
Henvth: . >... Giese. cc. kee eee Peet 56 52 46 46 
Length of carapax including rostrum.. 20.1 20.0 15.7 15.1 
heneth Of TOStrnia 2/2. sce See eee 8.9 9.9 7.3 6.7 
Length of antennal scale ...... ...... 8.3 8.4 7.0 6.6 
Length sixth somite of abdomen...... - 6.2 6.0 5.4 4.8 
Length, Gf deison :. -- 2. cst aeteetttinw sne 10.4 10.3 8.5 7.9 
Hippolyte Phippsii Kroyer. 
ianse au Lioup 62. 25a eek sae ee $3 im. |. ...... s-. ea Bg 
Hippolyte polaris Ross. 
Dead Island, 3 fathoms, seaweed—eight females, all carrying eggs. 
All the specimens have the dorsal edge of the rostrum just as in H. 
Fabricii, that is, wholly unarmed except near the base, nearly straight, 
and horizontal. Although all the specimens are rather large, seven of 
them have only three teeth on the dorsal crest, two on the carapax, and 
one on the rostrum, while the other specimen has but four teeth in all. 
Two of the specimens have a well-developed epipod at the base of one 
of the third pair of legs, one has a well-developed epipod at the base of 
each of the third pair of legs, while the other specimens are, as usual, 
without epipods at the bases of the third pair of legs. In other respects 
the specimens are normal. These characters, with the length, are shown 
for each specimen in the following table: 
Length. Roatraltor, Legs of third pair. 
mm 
45 a No epipods. 
45 ae Epipod on right side. 
46 att No epipods. 
47 att Do 
48 ats Do 
48 ott Do. 
57 ott Epipod each side. 
59 a Epipod on right side. 
Four of the specimens give the following measurements in milli- 
meters: 
Muenetinei ots BOS S80 ee es see 46 48 57 59 
Length of carapax including rostrum. . 17.1 17:0 21.5 22.7 
Length of rostrum. :-.-....5--.----- 7.8 8.6 10.4 10.9 
