and some new Species of Nudibranchiate Mollusca. 165 



ientacula rather long, smooth, nearly linear, the lower portion 



transparent white, the upper orange. Oral tentacula about 



half the length of the dorsal ones and of the same colour. 



Brancliice elliptical, inflated, of a pale straw-colour, with a ring 



of orange near the apex ; set in nine or ten transverse rows of 



three or four papillae each on the sides ; those nearest the centre 



of the back large and much inflated, the side ones small. Foot 



linear, transparent ; the anterior portion not produced into 



angles. Length four-tenths of an inch. 



A single individual only of this pretty species was found with 



the preceding. We have named it after Dr. Farran of Dublin, a 



gentleman well known for his love of natural history, and for his 



fine collection of Irish shells. To his kindness we are indebted 



for the opportunity of procuring these interesting additions to 



the British Fauna. 



We add the descriptions of four new species of Eolis found at 

 Cullercoats, Northumberland*. 



El. angulata. — Body depressed, subangulated, broad in front and 

 terminating rather abruptly behind, of a pale pellucid orange. 

 Dorsal tentacula short, conical, obtuse, orange tipped with 

 white. Oral tentacula rather longer than the dorsal, white. 

 Branchice cylindrical, rather long, obtusely pointed, orange co- 

 loured with white apices, the surface covered with opake white 

 blotches ; arranged in ten or twelve close-set rows of about five 

 papillse each on the sides, leaving a broad naked space on the 

 back. Foot broad, produced into lateral angular points in front, 

 and suddenly tapering to a point behind. Length four-tenths 

 of an inch. 

 On a stone brought in from deep water by the fishermen. 



E. Northumbrica. — Body slender, transparent white tinged with 

 green. Dorsal tentacula rather long, truncated, irregularly 

 ringed in the upper portion, and tipped with white. Oral ten- 

 tacula smooth, of the same length and colour as the dorsal 

 ones. Branchia subclavate, dark green with white tips ; set 

 in nine distant transverse rows of three to five papillse each 

 down the sides of the back. Foot slender, not much produced 

 behind ; the anterior portion slightly angulated. Length not 

 quite three- tenths of an inch. 

 On a coralline from deep water. 



This species difl*ers from the Montagua viridis of Forbes in not 

 having the papillae continuous across the back, in having nine 

 rows of these instead of five, and in some other minor characters. 



* Three of these were descrihed and drawings of them exhibited at the 

 Britiali Association Meeting at Mancliester in 1812. 



