100 Moll. 
MOLLUSCOIDEA. 
Terebratula bartletti, sp. n., deep water of the Antilles ; preliminary 
notice by W. Dali, Am. Nat. xvi. p. 885. 
Terebratula blanfordi, sp. n., Danker, Index Moll. Jap. p. 251, pi. xiv. 
figs. 4-6, Japan. ' 
Terebratulina crossii , sp. n., Davidson, J. de Conch, xxx. p. 106, pi. vii. 
fig. 1, Japan, 52 millimetres long. 
Terebratella septata (Phil.), found in the recent state in the Gulf of 
Lyons, between 445 and 1685 metres ; Fischer, C. R. xciv. p. 1201, and J. de 
Conch, xxx. p. 247, and Milne-Ed wards, Rapp. Faune sous-marine, p. 18. 
Liothyris, g. n. for Terebratula vitrea (Born) [L.] ; H. Douville, Sur 
quelques genres de Brachiopodes, Paris: 1880. 
Neothyris , g. n. for Waldheimia lenticularis (Desh.), id. 1. c. 
TUNICATA. 
A history of our knowledge, with full bibliography, and a general out- 
line of the structure and anatomy of the Tunicata , the latter with special 
reference to the simple Ascidians, is given by W. A. Herdman as an 
introduction to the Tunicata of the ‘ Challenger/ pp. 5-56, with several 
woodcuts. 
Anatomy and Physiology. 
The musculature of the tail of Fritillaria furcata is ‘broken up into a 
series of myomeres, seven in number, corresponding to each pair of nerves 
given off by the axial nerve-cord ; this metamerisation, however, is not 
obvious in the living or even in a recently killed individual, but only in 
specimens mounted in glycerine after treatment with picric acid. E. Ray 
Lankester, Q. J. Micr. Sci. (2) xxii. pp. 387-390, with woodcuts. 
The structure of the gills and the whole circulatory system in Ciona 
intestinalis is the subject of a paper by L. Roule. The gill is an inter- 
lacing of blood-vessels with thin vessels ; the vessels in the body are 
“ true lacunes ” in the conjunctive tissue, the walls of which are trans- 
formed into an epithelial layer. The blood contains three sorts of 
globules : (1) cells with ramified processes, analogous to the lymphatic 
globules in the Vertebrates ; (2) rounded or mamillated refracting 
globules ; (3) granular yellow cells, which are very rare. The first two 
sorts of cells are also found copiously iu other parts of the body. C. R. 
xciv. pp. 1662-1665. 
The ciliated sac or olfactory organ in the bud of Pyrosoma is the sub- 
ject of a paper by L. Joliet. He states that the primitive nervous canal 
does not become obliterated in order to constitute the ganglion, as Kowa- 
lewsky supposed, but that the ganglion is formed by proliferation of cells 
in its wall, the cavity of the canal remaining, and constituting the ciliated 
sac, which may probably act as a sensory (olfactory) organ. C. R. xciv. 
1882, pp. 988-991 ; also in Ann. N. H. (5) ix. pp. 400-412, and in Le Nat. 
iv. No. 14, p. 106. 
The sexual organs of Ciona intestinalis are the subject of a paper by 
L. Roule. The male and female organs are in the same animal, but 
wholly separated. The openings of the efferent ducts are, however, close 
