48 BRITISH TUN1CATA. 



CHANNEL ISLANDS. St. Peter's Port, Guernsey, on 

 stones (Alder). Off Saint's Point, Guernsey, on shells, 

 etc., dredged (Norman). 



First record. [Ansted & Latham, 1862 ; coll. Alder.] 



[A Le/itiH'lin/iui belonging to this division of the 

 genus, that is with calcareous crystals, is figured 

 (Plate LIX, figs. 1-6). It was found by Canon 

 Norman off Saint's Point and in Parella Bay, G uernsey, 

 and was named by the authors L. griseum, but has 

 not been described by them.] 



h. intlioiit calcareous cnjxtah. 



5. Leptoclinum gelatinosum Milne Edwards. 



(Plate LIX, fig. 7, and fig. Ill in text.) 



Leptoclinum gelatinosum MILNE EDWAKDS Obs. Ascidies 

 comp. [1841], p. 83, [in Mem. Acacl. Sci. lust. France, 

 XVIII (1842), p. 295,] pi. viii, f. 1 ; [THOMPSON in Eep. 

 Brit. Assoc. for 1843 (1844), p. 264, and in Ann. Nat, 

 Hist, (1) XIII (1844), p. 434;] FORBKS & HANLEY 

 Brit. Moll. I [1848], p. 17, pi. A, f. 5; [Cocxs in 

 Eep. E. Cormv. Polyt. Soc. for 1849 (1850), p. 74; M. 

 SAKS in Nyt Mag. f.'Naturvid. VI (1851), p. 154; G-OSSE 

 Man. Marine Zool. II (1856), p. 33, f. 47 ;] THOMPSON 

 Nat. Hist, Ireland, IV [1856], p. 362; [NORMAN in 

 Zoologist, XV (1857), p. 5707 ; H. & A. ADAMS Gen. 

 Recent Moll. II (1858), pi. c-xxxvi, ff. 1, 1 a; M. SARS in 

 Forh. Vid.-Selsk. Christ. 1858 (1859), p. 66; ANSTED 

 & LATHAM Channel Isl. (1862), p. 219; GRUBK in Abh. 

 schles. Ges. vaterl. Cultnr, 1868-69 (1869), pp. 105, 

 125]. 



Colon// (PI. LIX, fig. 7) gelatinous, thin, semi-trans- 

 parent, white or nearly colourless. Individuals irregu- 

 larly arranged around common cloacal orifices, which 

 are rather large. Branchial aperture divided into six 

 deep lobes (fig. 111). Thorav white, abdominal viscera 

 yellow, nearly sessile. 



