126 BRITISH TUNICATA. 



22. [Ascidia Morei sp. iwv.*'] 

 (PL XIV, and fig. 23 in text.) 



[Hod t/ ovate, of a pellucid yellow colour blotched with 

 red, attached by a rather broad base. Apertures sessile 

 or slightly tubular, near together, turned a little to the 

 left side, the branchial nearly terminal, the anal a little 

 way down towards the ventral margin. Test rather 

 thick, firm, cartilaginous, transparent, colourless, 

 wrinkled delicately lengthwise and minutely punctate. 

 Mantle rather stout, semi-transparent, speckled with 

 opaque white powder, the tubes and the upper ex- 

 tremity suffused with carmine. Tentacular filament* 

 numerous, long and slender, of nearly equal size, dotted 

 with opaque white. Branchial sac with strong rods, 

 the papillary membrane rather contracted, the upper 

 border, at its junction with the rod, abruptly enlarged. 

 Oral la ni'ui K wide, margin entire, ribbed at the base of 

 the right side. 



Length about three quarters of an inch. 



Hall. Deep water ? 



IRELAND. North Wall, Dublin, cast ashore (Mow). 

 First record. Hancock ; coll. More, 1870. 



The minute punctations of the test (PL XIV, figs- 

 1 and 2) give to the outer surface of this species a 

 granular appearance, seen only with a powerful lens. 

 The blood-channels are few, and are principally confined 

 to the lower extremity. 



The red spots on the mantle (PL XIV, figs. 4 and 5) 

 are occasionally confluent, forming a brilliant carmine 

 blotch extending over the greater portion of the pallia! 

 lobe. On both sides there is a delicate powder of 



* This is the last species which Mr. Hancock examined. It is not de- 

 scribed in the MS., having- been collected after he had ceased to work at that. 

 The description is drawn tip from the pencil notes by the side and at the 

 back of his drawings, where he has recorded the date of collection, i^ird 

 October, 1870, and the date of his microscopical examination of the speci- 

 mens, 27th April, 1871. 



