of British Mollusca. 61 



Suborder II. THECOSOMATA. 

 Fara. 2. Limacinidse. 

 Genus 1. Limacina. 



22. Limacina retroversa (Fleming) = Spirialis 7'etroversa^ 

 Jeffreys. 



Var. 1. Macandrei^ F. & H. 



A produced form, of which several specimens were 

 dredged by MacAndrew 15 miles south of Mizen 

 Head, south of Ireland. The form approaches that 

 of L. hulimoides, d'Orb., but the shell is smaller 

 and more delicate than in that species and the suture 

 more deeply cut. 



[Var. 2. Jeffrey sii^ F. & H. 



Only a single " very young shell " was found. 

 Stated by Jeffreys himself to be only the young.] 



23. Limacina helicoides^ Jeffreys. 



Limacina helicoides, Jeffreys, Ann. & Mag. Nat. Hist. ser. 4, vol. xix. 



(1877), p. 338. 

 Limacina helicoides, Pelseneer, Report * Challenger ' Pteropoda, pt. 2 



(1888), Thecosomata, p. 23, pi. i. fig. 1. 



' Porcupine ' expedition, 1869, off the west of Ireland, 

 Stat. 28, lat. 56° 44' N., long. 12° 52' W., dead at bottom. 

 It was also procured in the North Atlantic in the ' Valorous ' 

 expedition, by the ' Challenger ' off the Azores, and by the 

 * Travailleur ' in the Bay of Biscay. 



[^Limacina hulimoides (d'Orbigny). 



Atlanta bidimoides, d'Orbigny, Voy. dans I'Am^r. merid. vol. v. (183G), 



p. 179, pi. xiii. figs. 36-38. 

 Limacina buhmoides, Boas, Spolia Atlantica, Bidrag til Pterodernes 



(1886), p. 47, pi. iii. figs. 36, 37. 



Pelseneer (' Challenger ' Report) records this species, which 

 occurs in all the oceans except the Arctic and Antarctic, as 

 " found by the first ^ Porcupine ' expedition, 1869." I do not 

 know whence he procured the information, as I have no remem- 

 brance that Jeffreys has recorded it. It may be that speci- 

 mens are preserved in the British Museum. It depends upon 

 the station at which it was found whether it can be included 

 in our lists.] 



