I9I4- CouiAX. — Of^i>itJiobrancii Fauna of Co. Dublin. 183 
Monograph, but the. papillae were fewer, in no case exceed- 
ing 10. Many of the juveniles were colourless, save for 
the papillae which had creamy hepatic lobes. A specimen 
isolated on the 25th July, 191 2, laid 4 distinct egg-clusters 
within 24 hours. According to Meyer and Mobius the 
species attains to 21 mm. in the Kieler Bucht. My largest 
specimen was 6 mm. in length, and in 4 specimens examined 
the number of rows of teeth ranged from 38 to 52. 
G. tricolor (Forbes). 
Eolis tricolor. 
Frequent in dredgings all along the coast in from 8 to 
17 f. ; quite absent from the littoral zone. About 20 speci- 
mens taken in 14 f. between Burford Bank and the Bailey 
Light, Howth, and 28 specimens in 10 f. off Dalkey, July^ 
1907 : Colgan, '08. One specimen in 10 f. off Bullock in 
April, and another in 14 f. off Skerries in July, 1908 : Colgan, 
'09. Taken in 15 other hauls in from 2 to 17 f., 1911-14, a 
total of 55 specimens : N.C. Largest, 39 mm. long. 
One of the most plentiful nudibranchs of the Irish Sea 
between 10 and 42 f. : Farran, '09. 
G. Farrani (Aid. and Hanc). 
Eolis Farrani. 
Locally abundant near low-water mark on Obelia dichotoma, 
investing Z osier a marina, Chorda fihtm and Laniinaria 
saccharina. "A single specimen of this pretty species was 
found with the preceding " [Eolis alba, taken at Malahide, 
1843]. "We have named it after Dr. Farran of Dublin, a 
gentleman well known for his love of natural history. To his 
kindness we are indebted for the opportunity of procuring 
these interesting additions to the British fauna " : Aid. 
and Hanc, '44. Four specimens on Zostera at Shennicks 
Island, July, 1908 : Colgan, '09. Common in the channel 
between Shennicks Island and the mainland, where 134 
specimens were taken, 1907-13, as many as 28 in one gather- 
ing, the largest 23 mm. long : N.C. 
In its Dublin head-quarters off Shennicks Island this 
species is highly variable in colour. The white form with 
