Mollusks, 7239 



L. tentaculata {Sigaretus haliotoideus). Clyde, Smith. Mr. Roger 

 Hennedy, in a paper read before the Glasgow Natural History Society, 

 mentions this species, among a iew others, found at Gowrock, and 

 says it " is found in May beneath stones, where it probably comes at 

 that season to deposit its spawn." — Naturalist, vol. ii. p. 88. 



Fam. XVI. CancillariadcB. 



Trichotropis borealis {Fusus umbilicalus). This interesting species, 

 remarkable for the epidermal bristles with which it is adorned, occurs 

 sparingly in the coralline zone throughout the district. Mr. Smith 

 published the shell from the Clyde under the name of " Fusus um- 

 bilicatus," but the species had shortly before been described by 

 Broderip and Sowerby. 



*Cerethiopsis tubercularis {Cereihium tuberculatum). Alive in rock- 

 pools at Allan and Cumbrae, and dead in shell-sand. I met with an 

 unusually large specimen in a rock-pool at Clachland Point, which 

 measured five lines long and one line and a half broad ; it had four- 

 teen whorls remaining, and at least three more had been broken off. 



Fam. XVII. Muricidce. 



*Purpura lapillus. Clyde specimens are mostly white or yellowish 

 white. 



*Nassa reticulata [Buccinum reticulatum). Rare. I have taken 

 two or three specimens, but they had a very unhealthy look, as though 

 the locality did not suit them. 



N. incrassata {Nassa macula, Buccinum macula). Common. 

 *Murex erinaceus. Bute, Ayr, Smith. 



*Buccinum undatum {Buccinum anglicanum and B. carinatum). 

 Common. 

 *Fusus antiquus. Not common in the district. 

 F. norvegicus. Bute, Smith. Was it fossil ? 



F. islandicus {Fusus corneus). I have taken two or three examples 

 off the Tan Buoy ; and it is more abundant in deep water off the 

 north-east end of Little Cumbrae. " Near Fullerton's Rock in twenty 

 fathoms," Greville and Miles. 



*Trophon clathratus {Fusus Bamfficus). Clyde, Bute, Smith. 

 Lamlash, Landshorough. 



T. bervicensis. Included as a Lamlash shell in Dr. Landsborough's 

 last corrected catalogue of the Mollusca of the Bay. 



