TUNICATA (SYNASCIDIJ?, ANCHINL®]). Moll. 103 
Island, Carolines. Abstract also in Ann. N. II. (5) xi. pp. 455-457, and 
J. R. Micr. Soc. (2) iii. p. 498. 
Distoma [-ms] mucosum , sp. n., adriaticum , sp. n., and crystallinum 
(Renier) = vitreum (Sars) ; Drasche, l. c. pp. 18-21, pis. iii. figs. 14 & 16, 
& ix. figs. 1, 2, 5, 6, & 10, Istria. 
Cystodytes, subg. n. of Distoma (Gartn.). The individuals are enclosed 
in a calcareous capsule. C. durus and cretaceus, spp. nn., Drasche, l. c. 
pp. 9 & 18, pis. iii. figs. 13 & 15, & ix. figs. 3 & 4, Istria. , 
Distaplia magnilarva (DellaValle) — Cellulophana pileata (0. Schmidt), 
and D. lubrica , sp. n. ; id. 1. c. p. 22, pis. ii. figs. 9 & 10, vii. fig. 35, & ix. 
figs. 8 & 9. 
Aplidium asperum and pellucidum , spp. nn., id. 1. c. p. 26, pis. v. figs. 20 
& 24, & x. figs. 18 & 31-33, Istria. 
Circinalium concrescens (Giard) from Istria ; id. 1. c. p. 29, pis. v. fig. 23, 
& x. figs. 19-26. 
Amaroucinm conicum (Olivi, as Alcyonium, 1792) = Ale. pyramidale 
(Brug.) = Policitor dipartimentatus (Renier), the largest Synascidian, 
reaching 15 cm. in height and width, Adriatic ; A. commune , lacteum, 
subacutum , fuscum , and torquatum, spp. nn., Istria : id. 1. c. pp. 27-29, the 
first pi. vi., natural size, coloured, the others pi. v. figs. 19, 21, & 25 ; a 
single individual of the first, pi. x. figs. 27-30. 
Didemnum (Giard). Emendation of generic character, only three rows 
of gills; D. tortuosum, sp. n., Trieste, inarmatum and bicolor, spp. nn., 
and lobatum (Grubs), Istria : id. 1. c. pp. 51-53, pis. vii. figs. 27, 31, & 32, 
& xi. figs. 34-43, 51, & 55. D. (by mistake Leptoclinum) grubii, new 
name for Leptoclinum listerianum (Grube, nec M. Edw.), from the Island 
Lussin, Adriatic ; id. 1. c. p. 40, footnote. 
Leptoclinum coccineum , marginatum, granulosum, and tridentatum , 
spp. nn .,fulgens (M. Edw.), commune (Della Yalle), candidum (Sav.), gela- 
tinosum (M. Edw.?, Giard), aspersum (M. Edw.), maculatum (M. Edw.), 
dentatum (Della Yalle), and exaratum (Grube), all observed in Istria ; 
id. 1. c. pp. 33-36, pis. ii. figs. 11 & 12, iv. fig. 17, viii. figs. 36-44, & xi. 
figs. 44-51. 
Dulemnoides, subg. n. of Leptoclinum, Distinct by a fleshy cormus. 
D. macropliorum and resinaceum, spp. nn., id. 1. c. p. 37, pis. vii. figs. 29 
& 30, & xi. fig. 34, Istria. 
Diptosoma. Critical notes on this genus: Pseudodidemnum (Giard) 
has been distinguished from it by misapprehension ; Astellium (Giard) is 
connected with it by numerous intermediate forms; D. pseudoleptoclinum, 
chamceleon, and carnosum, spp. nn., crystallinum and spongiforme (Giard): 
id. 1. c. pp. 38-41, pis. vii. figs. 28, 33, & 34, & ix. figs. 11-16, Istria. 
The papers of A. Della Valle on the Synascidians mentioned supra in 
the List of Publications have not been seen by the Recorder. 
AN GRIN I PE. 
Ancliinia rubra (Vogt). Three fragments of zooid-bearing stolons 
found floating at Villafranca by A. Kowalewsky and J. BarroIS. As 
regards structure, it is exactly intermediate between Pyrosoma and Doli - 
