DECAPODA. 
Grust. 7 
Catometopa. 
Paratclphusa. The 7 known species enumerated, with a synoptical 
table of their differences, by J. Wood-Mason, Ann. N. H. (4) xvii. 
pp. 120-122. 
Elamene whitii^ sp. n., = E. depressa (White, 1846, nec Jacq. & Lucas), 
Miers, Ann. N. H. (4) xvii. p. 221, New Zealand. 
Grapsus, a large species, very common all over the island of St. Paul, 
in the Atlantic ; Willemocs-Suhm, P. R. Soc. xxiv. p. 582. 
Pachy grapsus advena, sp. n., Catta, Ann. Sci. Nat. (6) hi. No. 1, p. 7, 
pi. i. ; arrived at Marseilles outside a vessel coming from Pondicherry. 
Plagusia squamosa (Hbst.) and tomentosa (M. E.) found with the 
preceding ; id. 1. c. p. 4. 
OXYSTOMA. 
Leucosia neocaledonica^ elata, and margaritata^ spp. nn.. A, Milne- 
Edwards, N. Arch. Mus. x. (1874) pp. 40-42, pi. ii. figs. 1-3, New 
Caledonia. 
Philyra longimana^ sp. n., id. 1. c. p. 43, pi. ii. fig. 4, New Caledonia. 
Nucia tuberculosa, sp. n., id. 1. c. p. 44, pi. ii. fig. 5, New Caledonia. 
Myra eudactyla (Bell), specimen from New Caledonia ; id. 1. c. p. 46, 
pi. hi. fig. 3. 
Phlyxia erosa, sp. n., id. 1. c., p. 47, pi. hi. fig. 2, New Caledonia; 
female only known. 
Arcania loevimana (Bell), New Caledonian specimen ; id. 1. c. p. 48, 
pi. hi. fig. 4. 
Tlos petrams, sp. n., id. l.c.p. 51, pi. hi. fig. 1, Now Caledonia. 
Thia polita (Leach), Zooa ; Claus, Untersuch. Crust, syst. p. 56, pi. x. 
figs. 1-7. 
Gomeza vigintispinosa (Dehaan, as Oidia), A. Milne-Edwards, N. Arch. 
Mus. X. (1874) p. 52, pi. hi. fig. 5, New Caledonia. 
Anomuea. 
Claus rejects this suborder, referring the Paguridai to the Macrwa, 
and the Porcellanidai, Hippidce, and all the Apterura of Milne-Edwards 
to the Brachyura, on account of what is known about their development. 
Two undetermined larvae, one probably an Alhunea, described. Unter- 
such. Crust, syst. pp. 59-61, pi. ix. 
Deomiidag. 
Dromia ? Zoea- and Megalopa-stages ; id. 1. c. p. 68, pi. xiv.figs. 6-17. 
PAGUEIDiE. 
A. Agassiz has observed how the young hermit crab occupies the 
shells in which it dwells, and adds some theoretical considerations 
as to their possession of instinct ; Am. J. Sci, (.3) x. (1875), pp. 290. 
