Molluslcs. 7243 



Fara. XXIV. Tritoniadce. 

 Tritonia plebeia. Rothesay Bay, Alder and Hancock. 



Fam. XXV. MoUdidce. 



Lomonotus flavidus. " We obtained the only known example of 

 this species on a small Antennularia brought up by the dredge in from 

 three to four fathoms water in Lamlash Bay." — Alder and Hancock. 



Lomonotus ? Messrs. Greville and Miles dredged a Lomo- 

 notus "in Brodick Bay, between Invercloy and the Corrriegills, in from 

 ten to fifteen fathoms." From the description sent by them to 

 Mr. Alder, he considered it probably new, but the specimen was un- 

 fortunately lost before any account of it was drawn up. The example 

 was two inches in length, " white with orange processes," and 

 differed from L. flavidus in the " length of the velafilaments, and the 

 expansion of the posterior extremity." 



Dendronotus arborescens. Lamlash, Landsborough. 



Doto coronata. Lamlash, Landsborough ; and I have dredged it 

 to the west of Cumbrae. 



D. fragilis. Cumbrae and Arran. 



^olis papillosa. Lamlash, Alder. 



M. coronata. Common under stones at low-water at Cumbrae and 

 Arran ; and Mr. Alder has taken it at Rothesay. 



M. Drummondii. In similar situations to the last, and equally 

 common. 



JEi. rufibranchiata. Lamlash, Rev. D. Landsborough, Alder and 

 Hancock. 



J£i. lineata. Saltcoats, Rev. D. Landsborough, Alder 8f Hancock. 



M. smaragdina. An ^olis which I procured at Cumbrae came 

 nearer to the description and figures of this species than any other in 

 Alder and Hancock's work. It, however, differed in certain par- 

 ticulars, which I cannot now recall to mind. 



^. Landsburgi. I have taken this lovely species at Cumbrae. It 

 was first met with by Mr. Landsborough, jun., at Saltcoats. 



JE,. alba. Rothesay Bay, Alder and Hancock. Lamlash, Lands- 

 borough. Isle of Cumbrae. 



JE. olivacea. Rothesay Bay, Alder and Hancock. Lamlash, 

 Landsborough. 



JEa. aurantiaca. Taken by Mr. Alder at Ardrossan, Alder and 

 Hancock. 



