66 



BRITISH TUNICATA. 



[? Botryllus Borlasti FLEMING in Edinb. Encyd. XIV, 

 (1820), p. 631; Philos. Zool. (1822) II, p. '.515; and 

 Moll. Anim. (1837), p. 214.] 



Botryllus smaragdus MILNE EDWARDS O.bs. Ascidies comp. 

 [1841], p. 91, [in Mem. Acad. Sci. Inst, France, XVIII 

 (1842), p. 307, pi. vi, f. 6, and pi. vii, f. 4; (?) THOMPSON 

 in Ann. Nat. Hist. (2) I (1848), p. 64;] FORBES & HANLEY 

 Brit. Moll. I [1848], p. 22; [CocKS in Eep. R. Cormv. 

 Polyt. Soc. for 1849 (1850), p. 74;] THOMPSON [in Rep. 

 Brit, Assoc. for 1852 (1853), p. 293, and] Nat. Hist. 

 Ireland, IV [1856] , p. 363 ; [NoEMAN in Zoologist, XVIII 

 (1860), p. 7247; BRONN Thier-Reichs, III (1861), pi. xiv, 

 ff. 16, 17 ; ANSTED & LATHAM Channel Isl. (1862), ]. 219 ; 

 GRUBE in Abh. scliles. Ges. vaterl. Cultnr, 1868-69 

 (1869), pp. Ill, 112, 125]. 



Colon ij (PL LXII, fig. 1) incrusting, olive-green with 

 dark green granules. Individuals arranged in circles 

 of from six to twelve (PI. LVI, fig. 1), large, emerald- 

 green in colour, more or less intense, Avith a large 

 yellowish-green or golden-coloured pyriform area on 

 the thorax, frequently extending around the branchial 

 aperture : this area being marked with a longitudinal 

 green line, and others radiating from it, in the point 

 of junction of which is a vermilion or orange spot. 

 Braiu'lilal aperture large. 



Hab. On stones and fuel within tide-marks. 



ENGLAND. Not infrequently on the Cornish coast in 

 1847 (Alder}. [Selley's beach, Falmouth, Cornwall 

 (Codes}. ? Careg-Killas, Mount's Bay, Cornwall 

 (Borlase}J\ 



IEELAND. [Hollywood,] Belfast Bay, Antrim; a 

 specimen obtained by Dr. Drummond, 1846 (Thomp- 

 son). 



First record. Forbes & Hanley, 1848; coll. Alder. 



This differs from the last species in the larger size 

 of the individuals, and in their more brilliant [and 

 decidedly green] colour, as well as in the distinct 

 thoracic markings. British specimens require further 

 examination. 



[There can be but little doubt that this is the species 



