no 
specimens it is reduced and rounded and in a 
very few completely absent. On the third legs 
of very small specimens (less than 5.0 mm. 
long) there are only 4-5 spines on the pro- 
podus instead of the usual 9-11- 
The observed range of variation of this spe- 
cies is great, and if a few specimens on the 
fringes of the normal curve of variation were 
examined alone they probably would be inter- 
preted as separate but related species. How- 
ever, in the large number of specimens exam- 
ined, the gaps between the extremes were 
closed so the collection presented an almost 
continuous spectrum of variation from one 
extreme to the other. 
The description of the type specimen of 
Coutiere easily falls within the range of varia- 
tion noted above; there should be no doubts 
as to the specific identification of this species. 
Locally this species can easily be confused 
with C. hrevipes\ the separation of the two spe- 
cies is discussed in detail on page 106. 
DISTRIBUTION: This species is usually found 
in the same habitat as C. hrevipes\ like C. hrevi- 
pes, it is moderately common around Oahu. 
In the shallow water of the reef surface and on 
the outer sides of reefs to the depth of about 
20 feet it has been collected at the following 
localities: off Mokulua Islands, Waimanalo, 
Hanauma Bay, Waikiki, Nanakuli, Mokuleia, 
on Oahu; at Lahaina and at 10 miles north of 
Lahaina, on Maui. Edmondson (1925) has re- 
ported this species from French Frigate Shoal, 
Pearl and Hermes Reef, and Ocean Island. 
One chela, collected by the ’’Albatross” at 
Honolulu — without further designation — 
probably is this species (U.S.N.M. 63633). 
Edmondson has also reported the species 
from Johnston and Wake Islands. Its original 
description was based on specimens from the 
Indian Ocean, but it was not collected by the 
Siboga Expedition. 
Crinita Group, Diadema Subgroup 
Crangon paracrinita (Miers) 
Alphetis paracrinitus . Miers, Ann. and Mag. 
Nat. Hist. V, 8: 365, pi. 16, fig. 6, 1881. 
PACIFIC SCIENCE, Vol. VII, January, 1953 
As I have seen no specimen of this species, 
the original description is given. 
Rostrum triangular, acute, arising from the frontal 
margin of the carapace (which is slightly concave on 
each side of its base), but not prolonged backward as 
a dorsal carina. Orbital arches entire, arcuated, without 
spinules; anterior margin of the carapace sinuated on 
the sides, without spines. Postabdominal segments 
smooth, entire, with the lateral margins broadly 
rounded; terminal segment not three times as long as 
broad at the base, with its distal end subtruncated. 
Eyes completely concealed beneath the carapace. An- 
tennules with three joints of the peduncle exposed, of 
which the middle one is slightly the longest, with a 
small spine-like scale at base, reaching nearly to the end 
of the basal joint. Basal scale of antennae about reach- 
ing to the end of the antennal peduncle, with the outer 
margin convergent towards it and clothed with long 
hairs. Anterior legs or chelipeds having the merus and 
carpus slender; merus with a small tooth or spine at.the 
distal end of its under margin; palm of larger cheliped 
rather more than twice as long as broad, smooth, with- 
out notches or ridges, largest at its rounded basal end, 
with an impressed curved line on its upper and proxi- 
mal end; fingers nearly half as long as the palm; the 
upper with its superior margin arcuated. Smaller cheli- 
ped with the carpus rather longer, and chela very slen- 
der, fingers hairy. Second legs with the first joint of the 
carpus longer than the second, the last three joints of 
nearly equal length, the last a little the longest, the 
joint preceding these somewhat longer. Ambulatory 
legs somewhat hairy. Distal ends of the rami of the 
uropods clothed with long hairs. Color light yellowish 
(in spirit). Fingers of larger cheliped pinkish. Length 
7 lines (nearly 15 millim.). 
Only one specimen has been reported from 
the Hawaiian Archipelago, that by Edmond- 
son (1925) from Laysan Island. 
Elsewhere in the Pacific the species has been 
recorded from Johnston and Palmyra Islands 
by Edmondson. It has also been reported from 
Djibouti in the Indian Ocean. The type local- 
ity is Senegambia, West Africa. 
Crangon paracrinita (Miers) var. 
bengalensis (Coutiere) 
Fig. 40 a-k 
Alpheus paracrinitus var. bengalensis Coutiere, 
Fauna and Geog. Maid and Laccad. 2: 901, 
pi. 32, figs. 37-37e, 1905. 
DESCRIPTION: Rostrum triangular, acute, 
longer than width at base, tip reaching ap- 
proximately to middle of visible portion of 
first antennular article, rounded dorsally, not 
