22 Crust. 
CRUSTACEA. 
pp. 117-124, with woodcuts ; abstract in J. R. Micr. Soc. (2) ii. pp. 42 & 
43. Change of colour, supra in the generalities, 8. Biology. 
Stylodactylus, g. n. Rostrum long, compressed, with mobile articulated 
spines above and below ; feet of the first and second pair equal, didac- 
tyle, hairy, the palmar portion very small ; the following pairs mono- 
dactyle. S. serratus^ sp. u., Dominica, 524 fath., A. Milne-Edwards, 1. c. 
p. 11. 
PAL^MONIDiE (incl. AlPHEIDjE). 
Alpheus lieterocheles (Say), abbreviated metamorphosis ; Packard, Am. 
Nat. XV. p. 784 ; abstract in Ann. N. H. (5) viii. pp. 447 & 448. 
Alpheus edwardsi (Aud.), strenuus (Dana), perhaps only sexual differ- 
ence of the first, loivis (Randall), aud insignis (Heller), notes on specimens 
from Jedda; De Man, Notes Leyd. Mus. iii. pp. 105-107. 
Alpheus paracrinitus, sp. n., Miers, Ann. N. H. (5) viii. p. 365, pi. xvi. 
fig. 6, Goree. 
Alpheus (Betccus) scahro-digitus (Dana), and an undetermined species, 
both from West Patagonia; id. P. Z. S. 1881, pp. 73 & 74. 
Hippolyte phippsi (Kroyer) and polaris (Sabine), notes on specimens 
from Franz- Josef Land ; id. Ann. N. H. (5) vii. p. 46. 
lleterocarpus, g. n. Cephalothorax and abdomen keeled, the keel 
finishing on the abdomen in several spines; feet without palpiform 
appendage, first pair monodactyle, second pair didactyle, unequal, with 
multi-articulated carpus, the following pairs monodactyle. H. ensifer and 
oryx, spp. nn., Barbados, 218 & 955 fath. A. Milne-Edwards, 1. c. 
pp. 8-10. 
Bythocaris leucopis, sp. n., G. O. Sars, Arch. Math. Naturvid. 1881, 
p. 427, Arctic Sea, 1110 fath. 
Pandaliis leptocerus, sp. n., tenuipes, sp. n,, and propinquus (G. O. Sars), 
New England, 100-252 fath., S. I. Smith, P. U. S. Nat. Mus. iii. 
pp. 437-443. Branchial formula of Pandalus ; id. 1. c. p. 443. 
Pandalus longipes, sp. n., A. Milne-Edwards, 1. c. p. 15, Barbados, 
204 fath. 
Pandalus paucidens, sp. n., Miers, P. Z. S. 1881, p. 74, pi. vii. figs. 6 & 7, 
West Patagonia. 
Palcemonetes varians (Leach) described, it belongs rather to Anchistia ; 
Gabrini, Bull. Soc. Ven.-Trent. i. p. 187, and ii. p. 19. 
Palcemon, change of colour, vide supra, Biology. 
Palcemon rectirostris (Zaddach) var. n. octodentatus, Neumann, Syst. 
Ubers. 1878, p. 37, Palma, Mallorca. 
Leander semmelinJcii and celehensis, spp. nn., Makassar, and notes on 
L. pacificus (Stimps.), indicus (Heller), serrifer (Stimps.), longirostris 
(Say), and natator (M.-Edw.), from the Malayan and China Seas ; De 
Man, Notes Leyd. Mus. iii. pp. 137-142. 
Nematocarcinus, g. n. The feet of the second, third, fourth, aud fifth 
pair three times as long as the cephalothorax, with slender palpiform 
appendage. W. cursor, West Indies, 500 fath., A. Milne-Edwards, 1. c. 
pp. 14 & 15. ^ 
