78 IOWA STUDIES IN NATURAL HISTORY 
Alpheus hippothoé var. edamensis ? Zimmer, Zool. Jahrb., Suppl. 11, hft. 
3, (1913), p. 405, text figs. U1-Z1. 
Alpheus bahamensis Verrill, Trans. Conn. Acad. Sci., XXVI (1922), p. 
70, pl. 20, figs. 6, 6a, pl. 28, figs. 1, a-1l, 2, 3-31. 
Barbados, from coral heads, June 4; 7 (4 ovig.). 
Crangon nuttingi, new species 
Barbados from coral heads, June 4; one specimen. Pelican 
Island, tide pool, May 11; three specimens. Pelican Island, 
shallow (type locality); 14 19 ovig., 1 juv. 
Near C. bahamensis (Rankin). The rostrum extends forward about to 
the distal margin of the basal segment of the antennular peduncle; it is 
carinated, and the carina extends back behind the orbital hoods for about 
half its length; anteriorly, the rostral crest is distinctly keeled and pro- 
minent, posteriorly though higher, is broader and less conspicuous; the 
orbital hoods are unarmed and the rostro-orbital depressions are not 
sharply delimited behind, going over more or less gradually into the 
dorsum of the carapace. The antennular scale is as long as the first 
segment of the peduncle or a little longer; the antennal scale is scarcely, 
if at all longer than the antennal peduncle, the blade only 1eaches about 
to, or a little past the middle of the distal segment of the antennular 
peduncle, in C. bahamensis on the other hand the spine of the scale is 
distinctly longer than either the antennular or antennal peduncles; the 
basal antennal spine is short in both species; their larger chelae do not 
differ noticeably; the upper distal angle of the merus of the larger 
cheliped of C. baliamensis is markedly produced forming a blunt, spine- 
like process as figured by Rankin, though described by him as a sharp 
spine; such a spine does occur at the anterior inner angle of the merus; 
in our species the upper distal angle is not at all produced, being round- 
ed off, and there is no spine at the inner angle; the fingers of the 
smaller chela are about as long as the palm. The second pair of legs 
have the first carpal joint longer than the second, in fact equalling the 
combined length of the second, third, and fourth articles together, the 
second joint is a little longer than the fifth, about one-seventh longer, 
the third is a little longer than the fourth, the two together are scarcely 
longer than the fifth; in C. bahamensis the first joint is shorter than the 
second, about two-thirds or three-fourths its length, the second equals the 
third, fourth, and half the fifth joints together, the third is a little 
shorter than the fourth which is in turn a little shorter than the fifth, 
the third is about two-thirds the length of the fifth joint, the fourth 
about three-fourths. The meri of the third and fourth legs are unarmed 
below, thus differing from C. bahamensis in which they are armed; the 
dactyls are simple in both species. 
The carapace and rostrum of the male holotype together equal 14 mm. 
the abdomen and telson, 20.5, and the telson 4 mm.; the large hand is 
20 mm. long by 8 wide, at widest point, the small hand is 10.5 mm. long 
by 3.5 mm. the greatest width of the palm. 
