TUNICATA. 707 
B. Haternal tunic coriaceous, hard. Branchial orifice and anal 
.cloven into four rays. Branchial sae plicate. 
Cynthia Sav. Body sessile. 
Sp. Cynthia papillata Sav., Ascidia papillosa L., Bouapscu de quibusd. 
Anim. mar. p. 130. Tethyon coriaceum, Tab. x. fig. 1, Cuv. Mém. PI. 11. 
figs. r—3, Rane in GuéRIN Mag. de Zool. 1834, Cl. v. Pl. 43; Mediter. ; 
—Cynthia microcosmus, Ascidia microcosmus Cuv., Ascidia Cuwierii Put- 
Lippi, Cuv. 1.1. Pl. 1. figs. 1—6; the surface of the hard and wrinkled 
covering is often beset with sertulariz, corals and conchifers; this species 
also is found in the Mediterranean Sea. 
Sub-genus : Dendrodoa Mac L. 
Sp. Dendrodoa glandaria Mac LEay 1. 1. Tab. 20, p. 547. 
Boltenia Sav. Body oval, placed on a round petiole. 
Sp. Boltenia fusiformis Sav., Vorticella Boltenit L., Ascidia clavata SHAW 
(not PALL.), J. R. Botten Lpist. ad C. A. Linnéi de novo quodam Zoophytor. 
genere, Amstelrod. 1771, 4to. c. Tab. color. ;—Boltenia ovifera Sav., Ascidia 
pedunculata SHaw, Vorticella ovifera L., Savieny 1.1. Pl. 1. fig. 1, B, 
Buainv. Malacol. Pl. 8, fig. 3, &e. 
Sub-genus: Cystingia Mac L. 
Sp. Cystingia Grifithsii Mac Lray 1.1. Tab. 19, pp. 540—545, near the 
North Polar-circle in Fox-Channel, met with in Parry’s expedition. 
_ Perhaps it belongs to sub-genus Boltenia legumen Lesson, Centur. zool. 
Pl. 5, fig. 1, pp. 149, 150. 
C. LHxternal tunie hard, composed of separate scutella. Body 
sessile. 
Chelyosoma SowERBY. Body depressed, discoidal, adhering to 
foreign bodies. Orifices conical, both closed by six triangular 
valves. 
Sp. Chelyosoma Macleayanum, Zoological Journal, 1829, xvi. p. 46, D. 
F. Escuricut Anatomisk Beskrivelse af Chelyos. Macleayanum, Vidensk. 
Selsk. naturvid. og math. Skr. 1X. 1842, pp. 1—16, Tab. 1. 
Norr.—It may suffice here simply to name the genera Pedotethis 
and Syphonotethis, of which the author, Grrvais, has given the 
names alone (Ascidies, Dict. univ. d Hist. nat. 1. 1842, pp. 207, 
208). 
45—2 
