924 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
P. acutirostris as figured by Dana represents a female. There are egg-laden females only 39 mm. 
long in the Fish Commission collection. 
Hippolyte gradlipes Eandall (Proc. Acad. Nat. Sci. Phila., 142, 1840), according to Gibbes (Proc. 
Amer. Assoc. Adv. Sci., Ill, 1850, 197 [33] ) is a Palsemon; Sharp, in his list of Macrura in the Museum 
of the Philadelphia Academy (Proc. Acad. Nat. Sci. Phila., 1893, 115-117) does not mention Hippolyte 
gradlipes. I did not find the type in the summer of 1904. . 
Palaemon debilis Dana. 
(PI. XXII, fig. 1.) 
Palsemon debilis Dana, Crust. U. S. Expl. Exped., I, 585, 1852; pi. xxxvm, fig: 6, 1855. 
Palsemon debilis var. attenuatus Dana, op. cit., 585, pi. xxxvm, fig. 7. 
Leander debilis Stimpson, Proc. Acad. Nat. Sci. Phila., XII, 1860, 40 [109]. Ortmann, Zool. 
Jahrb., Syst., V, 1890, 515. Lenz, Zool. Jahrb., Syst., XIV, 1901, 435. 
Rostral formula tip bifid; terminal half unarmed above. Sixth abdominal segment two-thirds 
as long as carapace. Carpus of second pair of feet longer than propodus. 
Taken by the Fish Commission in 1901, at Opae; Mauna Loa in coral pools; Pearl Harbor; in 1902, 
at Honolulu Reef; Kealakekua Bay, Hawaii; Puako Bay, Hawaii; south coast of Molokai Island, 
station 3844. Hilo, Hawaii, H. W. Henshaw. 
Hawaiian Islands (Dana, Stimpson); var. attenuatus, Hilo (Dana). Lahaina, Maui, brackish 
pond; Oahu; Kaliki, fresh water lake, Oahu (Lenz). Oahu (Sharp). 
Palsemon pacificus (Stimpson). 
(PI. xxii, fig. 3.) 
Leander padficus Stimpson,. Proc. Acad. Nat. Sci. Phila., XII, 1860, 40 [109]. Ortmann, Zool. 
Jahrb., Syst., Y, 1890, 515. 
Less abundant than the preceding. Rostral formula tip obliquely trifid; sometimes the acces- 
sory subterminal teeth rather remote from tip, so that there appear to be nine or ten dorsal teeth. 
Sixth abdominal segment half as long as carapace. Carpus of second pair of feet shorter than propodus. 
Taken by the Fish Commission in 1901 off pier, Moana Hotel, in 1902 at Honolulu Reef and at 
Hilo. Hilo, Hawaii, H. W. Henshaw. 
Hawaii (Stimpson). 
Palsemon pandaloides, sp. nov. 
(PI. xxii, fig. 4.) 
Median carina extending halfway back on the carapace. Rostrum from one and a half to nearly 
twice as long as rest of carapace; slender, ascending; armed above with seventeen movable overlap- 
ping spines, of which five are behind the orbit, the remainder 
on the basal two-fifths of the rostrum, distal portion unarmed 
above except for subterminal spine; thirteen fixed spines be- 
low, which diminish in size distally, the lastone remote from tip. 
A long antennular spine and a somewhat shorter antennal 
spine on the anterior margin of carapace. Sixth pleonic seg- 
ment twice as long as fifth, and nearly as long as telson, which 
has two pairs of lateral spines. 
No distinct ocellus on the eye. Antennular peduncle ex- 
tending to middle of antennal scale; basal spine overlapping 
second segment a little, third segment slightly shorter than 
second; flagella at least as long as rostrum. Basal segment of antenna with an outer distal spine; 
scale nearly as long as carapace, extremity very oblique, outer spine less advanced than end of blade; 
peduncle reaching just to end of second segment of antennular peduncle. Outer maxillipeds very 
slender, exceeding antennal peduncle by over half the terminal segment. 
Fig. 73 . — Palsemon pandaloides , type, foot of 
second pair, x 3f . 
