DECAPODA. 
207 
jecfcing, eyes concealed beneath the orbital margin of the carapace ; 
pennltimate joint of the ambulatory feet expanded and dactylus short. 
U. ellipticiis, Panama, and limhatus, St. Thomas, spp. nn. Id. 1. c., pp. 
117 & 118. 
Speloiophorus nodosus (Bell, as Oreophorus^ M.-E.), female described ; 
id. 1. c. p. 119, Jamaica. 
^ Hippid.®. 
Rcmipcs barhadenshj sp. n. (already indicated by Petiver), Stimpson, 
1. c. p. 120, Barbados. 
PORCELLANIDAC. 
Porcellana spinipes, sp. n., A. Milne-Edwards, 1. c. p. 8G, Upoln. 
Petrolistlies criomerus, sp. n., Stimpson, 1. c. p. 119, Mendicino, 
California. 
ERTONIDiE. 
Deidamia^ g. n. (Willomoes-Suhm, MS.) Wyville Thomson, Nature, 
viii. [187.8] pp. 51 & 217. Oephalothorax flattened, Avith a compressed 
free lateral margin ; a lamellar appendage at base of each of the outer 
antoimoe; swimmerets consisting of 3 joints with 2 palpi; no trace of 
eyes or eyestalks ; 4 pairs or all the ambulatory feet cheliferous. 
Approaches the fossil Eryon. D. leptodactyla^ p. 51, fig., dredged in 
the N. Atlantic, 1900 fathoms, and crucifer., p. 247, dredged near the 
Antilles, 450 fathoms. Dcidamia being pre-occupied by Clemens 
(^Lepidnptera, 1859), the name Willcmoesia is proposed for it ; A. R. 
Grote, tom. cit. p. 485. Cf. Z. wiss. Zool. 1874, pp. xxix. & xxxiii., and 
Thomson, J. Zool. iii. p. 130. 
Loricata. 
Palinurus ehrenhergi (Heller), Hoffmann, Rech. faun. Madag. v. 2, 
pp. 30-32, pi. viii. fig. GO, Reunion Island. 
Scyllarus nodifer, sp. n., Stimpson, P. Ac. Chic. i. [18GG] p. 123, and 
Ann. Lyc. N. York, x. p. 123, Florida Keys. 
Astacid^. 
The species of fresh-water Crayfishes occurring in the Russian Empire 
have been examined by K. Kessler, and are arnmged l)y him in the fol 
lowing manner : — 
a. Rostrum with a tooth on each side near tlio tip ; upper flagellum 
of the inner antennae scarcely denticulated ; males without hooks 
at the base of the feet, first pair of abdominal feet one- 
jointed. 1. Astacus leptodactylus (Eschscholtz) widely distributed 
in most rivers tributary to the Black, Caspian, and White Seas, 
also in the Caspian Sea itself; A. angulosufi (Rathke) is a 
