35 Orusi. 
CRUSTACEA. 
LYCJlIDiE. 
Claus (1. c. pp. 32-43) distinguishes and characterizes the following 
genera : — 
1. Thamyris (Sp. Bate, 1861) = Sohnehagonia (Claus, 1872). T. globi- 
eeps, sp. n., Zanzibar. T. rapax (Claus, 1872), Cape of Good Hope. 
2. Lyccea (Dana). L. nasuta, Zanzibar, similis, Dagos, serrata, Bengal, 
and rohusta, Naples and Messina, spp. nn. L. pulex (Marion) is a young 
male of the last. 
3. Simorrhynchus (Claus, 1871), S. antennarius (Claus), Zanzibar and 
South Sea. 
4. Pseudolycma , g. n. Both pairs of gnathopods terminated by a 
simple claw ; fifth and sixth pairs of legs nearly equal, seventh pair well 
developed, with broad femoral plate. P. pachypoda, sp. n., Messina and 
Zanzibar. 
6. Parulyccua^ g. n. Gnathopods as in the preceding ; fifth pair of 
legs very long, seventh rudimentary with thin curved femoral plate. P. 
gracilis^ sp. n., locality unknown. 
6. LyctxopsiSj g. n. Gnathopods as in the preceding ; sixth pair of 
legs very long, seventh well developed but thin and slender. L. themis- 
toideSy sp. n., Messina, frequent. 
OXYCEPHALID.®. 
Oxycephalus similis, Messina, latirostris, Lagos, porcelluSy longiceps, and 
typhoides, Zanzibar, the last also from Messina, spp. nn., Claus, 1. c. 
pp. 47-49. 0. piscator (M.-E.) = oceanicus (Guer.) = tuberculatus (Sp. 
Bate), widely distributed, and ^enweVosim (Claus, 1871), Gilolo, described ; 
id. 1. c. pp. 44 & 48. 
Rhabdosorna armatum (White), South Sea and Southern Atlantic, fully 
described. R. whitii (Sp. Bate) is its male ; id. 1. c. pp, 49-52. 
Caprellid^. 
G. Haller publishes his observations, made at Messina and Villafranca, 
on the nervous system, sensitive hairs, and other problematical sensitive 
organs in the mandibular palpi and foot-claws, especially in the first and 
second pair, the natatory hairs in the lower antennae and prehensile spines 
in the claws and tarsi of the feet ; also upon the heart, generative organa, 
stomach, and intestine with their glands, the peculiar gland within the 
hand of the second pair of feet described by P. Mayer, and the nume- 
rous large cells of the type of conjunctive tissue spread throughout the 
body of the animal. He also makes some observations on sexual differ- 
ences, variations of colours (see below), manner of living and parasites of 
these animals, describing several species, and finishing by an attempt 
to derive the Laemodipods from the Gammaridod phylogenetically, by 
adaptation to a sedentary semi parasitical life. Cyamus is, according to 
