Mr. Thompson on the Mollusca of Ireland. 87 



indebted for it ; subsequently two individuals were taken by 

 Dr. J. L. Drummond^ when dredging in the month of June 

 in Belfast Bay. Mr. E. Forbes now agrees with Dr. Johnston 

 in considering D. Flemingii of his " Malacologia Monensis/' 

 (D. nigricans, Flem.) a variety of D. pilosa. The Dublin Bay 

 specimen is the var. : the others are of the ordinary form. 



Doris sublcBvis, mihi. PI. II. fig. 1. 



Z). convex, broadly ovate, smooth, basal sheaths to the tentacula, 

 foot broad, branchial filaments 8, long and finely plumose. 



Length of specimen (from spirits) 7 lines, height equal to about 

 half the length, breadth 41 lines, margin of cloak narrow, foot of 

 nearly equal breadth throughout, tentacula long and acuminated. 

 Colour white. 



In being smooth, this species agrees with the D. Icevis, 

 Linn. Mull. Z. D. vol. ii. p. 9. tab. 47- figs. 3—5, but differs 

 much in its convexity* and in the breadth of the foot, which 

 is represented very narrow in that species. 



Dredged in Belfast Bay by Mr. Hyndman, September 1835. 



Doris Barvicensis, Johnst. Ann. Nat, Hist. vol. i. p. 55. 

 pi. 2. fig. 11— 13. 



I have been favoured by G. J. Allman, Esq., with speci- 

 mens of this Doris, of which he procured about a dozen in 

 Courtmasherry harbour, in the months of August and Sep- 

 tember, 1838. They were all found among the roots of 

 Laminaria digitata cast ashore, and being alive, a minute de- 

 scription of them, as observed in this state, was drawn up 

 by Mr. Allman. In all details except the following, these 

 individuals agreed with those described by Dr. Johnston in 



the Annals. Slightly elevated white tuberclesf^ chiefly 



disposed in straight lines, appeared on the sides of the body ; 

 9 branchial leaflets ; in the several specimens examined these 

 do not encircle the vent, but are wanting for the space of \ of 

 a circle posteriorly, two hinder leaflets shortest. On calling 

 Mr. Allman^s attention to Dr. Johnston's description, he re- 



* a 



Doris ovalis alba corpore supra planiuscula Isevi," is Muller's dia- 

 gnosis of D. IcEvis. 



f Mr. E. Forbes, to whom the species is well known, considers what are 

 here called tubercles to have been only coloured spots having such an 

 appearance. 



