DECAPODA (macrura). Grusi, 21 
Monstrosity of the common crayfish ; Maggi, Rend. 1st. Lomb. (2) xiv., 
May, 1881. 
Camharus primcBvus (Packard), from the lower tertiary beds of Western 
Wyoming, described and figured by Packard, Bull. U. S. Geol. Surv. vi. 
No. 2, pp. 391-397, with general observations on tertiary Astacidce ; also 
figured in Am. Nat. xv. p. 832. 
Homarus americanus (M.-Edw.), moulting ; Hyatt, P. Bost. Soc. xxi. 
pp. 83-90. 
Ilomarus americanus (M.-Edw.), deformities of claws, the most re- 
markable are outgrowths ; Faxon, Bull. Mus. C. Z. viii. pp. 267-263, 
pis. i. & ii. figs. 1-4, 6, 7, & 9. 
Nephropsis aculeatus, sp. n., S. I. Smith, P. U. S. Nat. Mus. iii. p. 431, 
New England, 100-126 fath. The structure and arrangement of the gills 
agrees with those of Neplirops. Probably = N. agassizi (A. M.-Edw., 
Oct., 1 880) ; id. later note. 
Phoberus, g. n. Intermediate between the Astacidce, Thalassinidce, 
and Carides, the gills brush-shaped as in the former, but a large scale 
below the antennae, and a well-developed rostrum as in the last. P. ccecuSy 
sp. n., 70 centimetres long, off Grenada, West Indies, 416 fath. A. Milne- 
Edwards, Ann. Sci. Nat. vi. (6) xi. Art. 4, pp. 1-3. 
THALASSINIDiE. 
Callianassa kruJcenbergi, sp. n., Neumann, Syst. Ubers. 1878, p. 34, 
Central America. 
Axius armatus, sp. n., S. I. Smith, P. U. S. Nat. Mus. iii. p. 431, New 
England, 100 & 142 fath., and note on A. serratus (Stimps.), distinct from 
stirhynchus (Leach), id. 1. c. p. 435. 
CrANGONIDAi). 
Pontophilus brevirostris, sp. n., S. I. Smith, 1. c. p 435, New England, 
65-155 fath. 
Paracrangon hystrix, sp. n., A. Milne-Edwards, Ann. Sci. Nat. (6) xi. 
Art. 4, p. 6, Guadeloupe, 734 fath. 
Glyphocrangon, g. n. Feet as in Crctngon, penultimate joint of the 
second pair multi-articulated, as in Lysmata ; sixth abdominal joint nearly 
wholly united to the seventh ; cephalothorax covered with large wrinkled 
tubercles, arranged in longitudinal rows. G. spiniuiuda, nobile, and 
aculeatum, spp. nn., West Indies, 250, 1131, & 593 fath. Id. 1. c. pp. 3-5. 
Tozeuma (Stimps.) serratum and cormitum, spp. nn., id. 1. c. p. 16, 
Barbados, 56 & 40 fath. 
Atyid^e. 
Atyoida potimirim^ sp. n. Fresh-water of Southern Brazil, the bristle - 
bearing pincers in it and in Caridina serve for feeding off the mud, a 
hairy process of the hinder maxilla and a hooked appendage of the first 
periopod for keeping the branchial cavity clean. F. Muller, Kosmos, ix. 
