CRUSTACEA. 
609 
Orapsus {Pachygrapsus) ccthiopicus, sp. n., Hilgendorf, I, c, p. 88, pi. 4. 
fig. 2, Continent of Eastern Africa, in fresh water. 
Cryptograpsus cirripes, sp. n., Smith, Transact. Acad. Connecticut, ii. p. 11, 
pi. 1. fig. 3, and Am. Journ. Sci. and Arts, vol. xlviii. p. 389, Rio de Janeiro. 
Sesarma quadrata (Fabr.)=/?fc<a (De Haan) = «^m5 (De Haan), S. tetra- 
gona (Fabr. ?, M.-Edw.), S. hidens (De Haan), and S. leptosoma, sp. n., all 
from Zanzibar, described by Hilgendorf, 1. c. pp. 89-92, pi. 3. fig. 3, a-d, pi. 4. 
fig. 3, and S. leptosoma, pi. 6. fig. 1. S. fascicidaris (Herbst), described from 
the original specimen (M.-Edw.), ibid. p. 89, pi. 3. fig. 3 h. 
Sesarma lividum, New Caledonia, guttatnm, Zanzibar, angustifrons, Sand- 
wich Islands, Iceoe, Aroo Islands,/row^«fe, Madagascar, germani, Pulo Condore, 
hocourti, Bangkok, mullerii, Desterro, elo^igatum, Madagascar, rotundifrons, 
dentifro^is, and villosum, from Upolu, Samoa Islands, and S. {Holometopus) 
auhryi. New Caledonia, spp. nn., Alph. Milne-Ed wards, Arch. Mus. Hist. 
Nat. V. pp. 25-31. 
Sesarma {Aratus) pisonis (M.-E.), from brackish water at Rio Janeiro, E. 
V. Martens, Arch. f. Naturgesch. xxxv. p. 12, pi. 1. fig. 4 (hand). 
HcUce granulata (Dana) from Rio Janeiro, in brackish water, described 
by E. V. Martens, c. p. 11, pi. 1. fig. 3. 
Metagrapsm indicus, sp. n., Alph. Milne-Edwards, Nouv. Arch. Mus. iv. 
p. 174, pi. 26. figs. 1-5, Manado, Celebes. 
Pseudograpsus crassus, sp. n., Alph. Milne-Edwards, ibid. p. 176, pi. 26. 
figs. 6-9, Manado, Celebes. With remarks on the definition of this genus. 
Gnatliograpsus, gen. nov., the palpus or exognath of the external maxil- 
lipeds as broad as the maxilliped itself. G. riedelii, Celebes, and G. pilipcs, 
Philippines, spp. nn., Alph. Milne-Edwards, Nouv. Arch. Mus. iv. pp. 180- 
186, pi. 27. figs. 1-5 and 6-10. 
OXYSTOMA. 
Maiida victor (Fabr.). The peculiar raised cross-ridged spots and crenu- 
lated ridges on the hand described, and supposed to be an instrument of 
sound, by Hilgendorf, 1. c. p. 93, pi. 3. fig. 2. 
ANOMURA. 
The last pair of thoracic feet (pleopods) in the genus Porcellana, usually 
regarded as rudimentary and without function, has been observed by Fn. 
Muller to be nearly always in motion, and very essential for cleaning the 
back or the cavity of the gills, or for leading a current of water to them or 
to the eggs. Also in Hippa and Pagurus they have the same function. Fr. 
Muller, Jenaische Zeitschr. f. Med. u. Naturwiss. v. p. 269. 
Pemipes testudinarius (Ijeiir. )^pictus (Heller) (Alph. M.-Edw.), 
from Eastern Africa and Indian archipelago, Hilgendorf, I, c. p. 94. 
Pagurm tricarmatns, sp. n., Norhian, Rep. Brit. Assoc, for 1868, p. 264, 
Shetland Islands. 
Pagurus {Clihanarius) virescens (Krauss)=? Clib. signatus (Heller) and P. 
{CL) longitarsus (De Haan), from Zanzibar, described, with critical remarks, 
by Hilgendorf, 1. c. p. 95. 
Coenohita. Dr. Hilgendorf distinguishes two sections : — 
a. Pagurus-like Coenobitfc: squamiform appendix of the outer antenna? 
