22 Ech. 
XIV. EC IIINO DERMA. 
gibbosa, especially water- vascular system, axial sinus, dorsal organ, 
prasoral lobe as fixing organ compared with that of Crinoids ; Macbripe 
(72). — Bipinnariie from English Channel, described, compared withB/pbi- 
naria asterigera , Sars, and with Tornaria ; Garstang (34). — Variations, 
especially in development of right hydroccele, in larva of Asterina ; 
Macbride (74). 
(c) Brephic and Neanic stages : — Brephic stage of Gulcita, plates 
figured ; Bell (7) p. 404. — Epiproctal appendage in young of Psilaster 
andromeda , and in Porcellanasteridce ; Perrier (92) pp. 196, 201. — 
Full description of Ech inaster sepositus (?) with R = 5 mm., r = 2 mm. 
(p. 148), young individuals of Dorigona carefully described (p. 367), 
later growth-stages of Pentagonastev perrieri (p. 391) ; Perrier (92). — 
Young of Plutonaster agassizi (p. 249), stages of Psetular chaster concinnus 
(p. 253), young of Bathybiaster robustus (p. 256), Ptcraster hexactis 
(p. 277); Yerrill (125). 
(v) OPHIUROIDEA : — Brephic stages of Ophiothrix fragilis ; Meiss- 
ner & Collin (80) p. 336. 
(vi) CRINOIDEA :-Ova of Antedon rosacea ; Crety (27) p. 261. 
(vii) Experimental investigation Of ova of Echinus and 
Sphctrechiuus , and criticism of Boveri (25) Zool. llec. 1893 ; ^eeliger 
(109). — Production of two or more fused embryos from a single Echinoid 
egg ; Loeb (62a).— Segmentation of ovum in Synapta digitata under 
pressure ; Braem (15). — Rearing of Asterina gibbosa in confinement ; 
Waddington (126). 
III.— DISTRIBUTION. 
A.-GEOGRAPHICAL. 
(i) General. 
Deep sea generally ; Hickson (43). 
(ii) Atlantic and adjacent SExVS. 
Geographic and Bathymetric distribution of Astero'ulea collected by 
“ Travailleur ” and “ Talisman,” from 26 to 5005 metres, Mediterranean 
and Eastern Atlantic, southwards to Cape Yerde and westwards to 
Azores (see also under the different genera) ; there are scattered at 
random a few species from other localities, such as the Antilles ; 
Perrier (92), pp. 1-3, 30-41 . 
North Sea, S.E. aud E. portions, Oph., Ast., Ech., and Hoi., in all 29 
spn., with stations, depths, and bottom recorded ; Meissner & Collin 
(80). 
