104 Moll. 
MOLLUSCOIDEA. 
Molgula (Forbes), generic description and M. gigantea (Cunningham), 
gregaria (Less.), both from South America, horrida (Ilerdm.), Falkland 
Isles, forbesi (Herdm.), Port Jackson, and pyriformis (Herdm.), Buenos 
Aires ; Herdman, Tunicata of the ‘ Challenger/ pp. 67-80, pis. iv. & v., 
and vi. figs. 1-3. 
Molgula (Forbes), analytical table of 23 species, M. eugyroides , Bahia, 
and occidentalism Danish islands of the West Indies, spp. nn. ; Traustedt, 
Yid. Medd. 1882, pp. 109-114, pis. v. figs. 1-5, vi. fig. 14. 
Ascopera (Herdm.), general description of the genus, and special of 
A. gigantea, and peduncu lata (Herd., 1880-81), both from Kerguelen, 150 
fath. ; Herdman, /. c. pp. 61-67, pis. i. ii. & iii. 
Eugyra herguelcnsis (Ilerdm.), id. 1. c., pp. 81-83, pi. vi. figs. 4-9, 
Kerguelen, 10-100 fath. 
Bostrichobranchus, g. n., distinguished from Eugyra by the large num- 
ber, smallness, and corkscrew shape of the infundibula of the branchial 
sac. Only one species, Ascidia manhattanensis (Dekay), North America ; 
Traustedt, l. c. p. 109. 
Cynthiidj*:. 
Analytical table of the 8 genera of Cynthiidce, by Traustedt, Yid. Medd. 
1882, pp. 114 & 115 ; of the Styelince, by Herdman, Tunicata of the 
‘ Challenger/ p. 149 ; of the Bolteniince , id. 1. c. p. 85. 
Probable phylogenetic table of the genera in this family by Herdman, 
l. c. p. 278. 
Cynthia (Sav.), analytical table, comprising 19 species ; C. clavigera, 
sp. n., Chile and Peru ; C. riiseana , sp. n., St. Thomas, West Indies : 
Traustedt, l. c. pp. 115-119, pis. v. fig. 13, vi. figs. 19 & 20. 
Cynthia cerebriforrnis, fissa , formosa , arenosa , irregularis , complanata 
(Herdm., 1881), pallida (Heller), Cape of Good Hope and Fiji Islands, 
papietensis , sp. n., Pupicto Harbour, Tahiti, fully described by Hordman, 
l. c. pp. 134-147, pis. xv. & xvi. 
Microcosmus helleri (Ilerdm.), Torres Strait, propinquus (Herdm.) 
and propinquus (Heller), Bass Strait ; id. 1. c. pp. 130-134, pi. xiv. 
Microcosmus (Heller), analytical table comprising 11 species. M. 
anchylodeirus , sp. n., St. Thomas, West Indies; Traustedt, l. c. pp. 120-122, 
pi. vi. fig. 18. 
Styela (lilacLeay, Heller), generic description, dorsal lamina in one 
species in the form of languets, and S. bythia , squamosa , grandis, convexa, 
lactea, exigua, clava, oblonga , flava , glans (Herdm., 1881) and radicosa, 
sp. n., Bass Strait; Herdman, l. c. pp. 149-164, pis. xviii.-xx., and 
xxiv. figs. 6 & 7. 
Styela plicata (Lesueur) = cuviera (Chiaje) == verrucosa (Philippi) ==. 
gyrosa (Heller), Mediterranean, West Indies, Brazil, Mauritius, Aus- 
tralia, and Polynesia ; Traustedt, l. c. pp. 123-125, pis. v. fig. 6, vi. 
fig. 16. 
Styelopsis , g. n., distinct from Siyela by the presence of only one 
plait in the branchial sac, which is on the right side ; the genital organs 
are also only developed on the right side. Only one species, S. grossularia 
(Beneden, as Ascidia) ; Traustedt, l. c. p. 115. 
