48 THAUMANTIAS SARNICA. 



and yellow. Stomach short, with proportionally large, triangular, sharp Ups. Ovaries 

 oblong, yellow, placed rather more than half way down the pileated sub-umbrella. Breadth 



nearly an inch. 



This pretty species was taken by Mr. Smith and myself, at Port Rush, on the north coast 



of Ireland, in June, 1839. 



Plate XI, fig. 2, a, represents it of the usual size : 2, b, magnified, as seen in profile ; 

 2, c, as seen from above ; 2, e, an ovary ; and 2, d, the stomach and lips. 



11. Thaumantias lineata, Forbes. 



Plate XI, Fig. 1. 



This is rather a large species of its division, measuring nearly an inch across the umbrella, 

 which is much depressed, sub-hemispherical, smooth, colourless, and tender. The margin 

 bears thirty-six (8X4-1-4) filiform, transparent tentacles, springing from as many very small 

 yellowish tubercles, with minute red ocelh. The sub-umbrella is elevated, as compared with 

 the umbrella. It is bounded below by a rather broad veil, and divided by four radiating 

 vessels ; in the second third of the length of these are seen the linear, yellow, reproductive 

 glands. The stomach is quadrangular, small, and very short, campanulate, with four fim- 

 briated lips. 



Taken in the Zetland seas in 1846, but not found common. 



Plate XI, f. I, a, represents it as seen in profile of the natural size ; l,b, magnified, and 

 viewed from above ; 1 c, an ovary ; I, d, two of the tentacles at their origins, with their 

 bulbs. 



12. Thaumantias Sarnica, Forbes (1841). 



Plate XT, Fig. 4. 

 E. Forbes, in Annals of Natural History, April, 1841, p. 84, pi. 1, fig. 6. 



Umbrella hemispherical, regularly convex, smooth, transparent, and colourless ; margin 

 with twenty (4x4-|-4) transparent tentacles, with colourless bases, which do not present 

 conspicuous eyes. Sub-umbrella rather convex, divided by the four radiating vessels. In 

 the lower half of the course of the latter, occupying nearly one half their length, are the linear 

 or slightly clavate, bluish, reproductive glands. The stomach is of the same hue, and is small, 

 quadrangular, with four, rather large, simple, triangular lips. Breadth about half an inch, 

 or rather more. 



I took this apparently distinct species between Guernsey and the Island of Herm, 

 in the autumn of 1839. It is very closely allied to Thaumantias pileata — perhaps too 

 closely. 



Plate XI, fig. 4, a and b, represents it as seen from one side, and from above ; 4, c, is 

 the stomach and lips ; 4, d, an ovary. 



