392 Mr. W. Thompson's Additions to the Fauna of Ireland, 



Bristol Institution) dredged from ninety-three fathoms, at a distance 

 of ninety miles (English) due south of the last-named locality. Mr. 

 MacAndrew considers this " an abundant deep-water species," and 

 has " obtained it off Scilly in forty-five fathoms ; in the middle of 

 St. George's Channel from sixty fathoms ; and westward of Zetland 

 from eighty fathoms." 



Planaria cornuta, Mull., and P. vittata, Mont. 



In the month of May 1845 I made a communication to this 

 Journal (vol. xv. p. 320) on the subject of the P. cornuta, Mull., in 

 which it was remarked, that the individuals described were more 

 round in outline than Dr. Johnston's specimens, as represented in 

 the ' Magazine of Natural History,' and still more so than those of 

 the ' Zoologia Danica,' but that I was unwilling to consider them as 

 specifically different. 



In the following month of September, M. Quatrefages published 

 in the ' Annales des Sciences Naturelles,' an elaborate and splen- 

 didly illustrated memoir on Planarice discovered by him on the 

 coasts of France, Italy and Sicily, and gave new names to the spe- 

 cies. One of these, found at St. Malo, is the same as that obtained 

 in Belfast Bay, and is called Proceros sanguinolentus. No reference 

 is made by the author to the P. cornuta described and figured by 

 Muller in the ' Zoologia Danica,' and by Johnston in Loudon's 

 ■ Magazine of Nat. Hist.' for 1832, either with respect to his species 

 being the same, or nearly allied to them. Having myself looked 

 critically to the subject, I can state with certainty that the species 

 procured in Belfast Bay is identical with that of Quatrefages, and 

 have indeed no doubt that Dr. Johnston's is also. Miiller's I am 

 now rather disposed to regard as different, in which case the name of 

 Proceros* sanguinolentus, Quat., or Planaria sanguinolenta, Quat., may 

 be adopted for the British species. 



In the same memoir, this author described and figured what is 

 called a new species under the name of " Proceros ? cristatus." This 

 is the Planaria vittata, of which a description and figure were given 

 by Montagu in a paper read to the Linnean Society in 1807, and 

 published in the 11th volume of the 'Transactions.' This author 

 knew the species only from two individuals taken at the same time 

 at Kingsbridge, Devonshire. The next notice of it known to me is in 

 a communication made by myself to the 5th volume of the ■ Annals ' 

 (p. 247), in which an individual was recorded as dredged in Strang- 

 ford Lough in October 1839. In the month of July of the following 

 year we took a second specimen (between tide-marks in this in- 

 stance) at Roundstone, on the western coast of Ireland. 



It is to be regretted, for the sake of science, that M. Quatrefages, 

 who is bestowing such unwearied attention on the more obscure por- 

 tions of the marine Invertebrata, and illustrating his subjects in 

 such a splendid manner, should not have been aware of the investi- 

 gations of those who have preceded him, and above all of the wri- 

 tings of Montagu, whose researches were chiefly made on the oppo- 

 site side of the same channel as his own. This species is an in- 



