STYELOPSIS SPHA'IRICA. loo 



it was probably considered by them to be a variety of 

 Ascidia rustica of Miiller. there appears, indeed, to 

 be little doubt that it is identical with the second-sized 

 figure under that name in Plate XV of the ' Zoologia 

 Danica.' We believe, however, that the three sizes 

 there figured by Miiller as different stages of the 

 growth of his Ascidia rustica- are really three distinct 

 species, and that the name must be retained for the 

 largest or typical variety only. It thus becomes 

 necessary to give a new appellation to the Ascidian 

 now under consideration. 



3. [Styelopsis] lineata sp. nov. 



Body globose, deep red, attached. Apertures large, 

 nearly circular, placed a little apart on conical pro- 

 tuberances of a paler colour than the body, lineated 

 with longitudinal bands of a deeper colour, and within 

 of an exquisite rose-red, a white line sometimes sur- 

 rounding the rim. Apertures, branchial the larger 

 and terminal, atrial a little to one side. T<vf thick, 

 rugose, deep red. Gregarious. 



Diameter about one fifth of an inch. 



Hab.-0n fuci. 



ENGLAND. - - Salcombe Bay, Devon, dredged, the 

 numerous individuals forming a dense mass about six 

 inches in length, covering both sides of a fucus 

 (Hinclcs). 



First record. Alder & Hancock ; coll. Hincks. 



For a knowledge of this species we are indebted to 

 Mr. Hincks, from whose manuscript notes the above 

 description is drawn up. He remarks that "the white 

 rim and longitudinal rose lines are characteristic." 

 Never having found similar markings in any of the 

 allied species, I agree with him in thinking it distinct. 

 It is nearly allied to [$.] grossitlaria. 



