ASCJDIACEA, THALIACEA. 
Tun. 7 
p. 183 ; C. japonica, sp. n., Traustedt, (27) p. 30 ; G. hilgendorjii , sp. n., 
id. (27) p. 36 ; G- corallina, sp. n., Roule, (21) p. 183 ; C. nordenshjoldii , 
sp. n., Wagner, (29) p. 157. 
Styela oligocarpa , p. 187, S. patens , p. 190, S. papillata, p. 192, S.procera , 
p. 196, S. captiosa, p. 202, S. herdmani , p. 205, S. cryptocarpa , p. 210, and S. 
spiralis , p.214, spp. nn., Sluiter (25). 
Styeloides , g. n., $. abranchiata , sp. n., if?. ?. c., p. 219. 
Polycarpa pusilla (N. Atlantic), p. 224, P. formosa (Tangier Bay), 
p. 227, and P. curta (59°36'N., 7° 20' W.), p. 226, spp.nn., Herdman(13). 
Molgulioe. 
This family and some of its genera are briefly discussed by Roule 
(2i). 
The anatomy of Molgula gromlandica is described in detail by 
Wagner (29). 
Eugyra adriatica, sp. n , Yon Drasche, (7) p. 160. 
Eugyriopsis, subg. n., p. 205, of Molgula , E. lacazei, sp. n., Roule (21). 
This is the species which Roule had previously named provisionally as E. 
intermedia (19). 
Molgula helleri and M.euprocta , spp. nn,, Yon Drasche, (7)pp. 162 & 163 ; 
M. martensii, sp. n., Traustedt, (27) p. 19 ; M. longicollis and M. nuda, 
spp. nn., Wagner, (29) pp. 153 & 154. 
Paramolgula , g. n., P. scliulzii , sp. n., Traustedt, (27) p. 20. 
ASCIDIAE COMPOSITE. 
The family Diplosomidce is briefly discussed by Jourdain (15). He 
changes Astellium , Giard, to Brevistellium. Hi3 observations show that 
the two buds described by previous observers as forming by their union a 
single ascidiozooid, really arise as a single outgrowth from the oeso¬ 
phageal region of the parent. He proposes that the Diplosomidce 
should be united with the Leptoclinidce ( Piclemnidce ), under the title 
Oligosomidce. 
Pseudodidemnum zosterarum , sp. n., Jourdain, (16) p. 1513. 
Herdman (13) gives a preliminary list of the species .of Com¬ 
pound Ascidians collected during the ‘Porcupine’ and ‘Lightning’ 
expeditions. 
THALIACEA. 
Seeliger (23) discusses the relations between the life-histories of the 
various Thaliacea, and also considers their probable phylogenetic relation 
to the other Tunicata. He regards the Thaliacea as having diverged at 
an early period from the Ascidians, but he places the Pyrosomaticlce as an 
offshoot on the branch leading to the Salpidce. 
Barrois (1), in discussing the life-history and the process of gem¬ 
mation in Anchinia, points out certain features in which that form 
approaches the Appendiculariidce , especially (1) the primitive condition of 
