MAETNE MOLIUSCA OP MADEIRA. 325 



Canaries. (M., L., N., Jn., W.) Everywhere very abundant. 

 The subgeneric name is given above as Eafinesque (Ann. 

 Nat. p. 144) wrote it in 1815. Eisso, following, also wrote 

 it thus in 1826. The form Bolma was a mistake of Grray. 



365. Turritella terebra, 1767, Linne (as Turho), Syst. Nat. p. 1239 : 

 Gwyn Jeffreys, B. C. iv. 80, ii. 1 ; & v. 209, Ixx. 6-11. Kdb. 

 Prom tbe Lofotens to the Mediterranean. (W.) Funclial ; 

 two specimens. — I give this species with a good deal of 

 hesitation, but I cannot admib either T. triplicata, Broc, or 

 T. hicingulata, Lam., both of which have been brought to me 

 as Madeiran : the former is very common at the Canaries. 



366. Tylodina citrina, 1833-4, Joannis in Gruerin's Mag. de 

 Zool. I. pi. xxxvi. 1 ; Yayssiere, Moll. Opisth. Marseille,. 

 Ann. Musee, 1885, p. 151, v. 130-136. Sah. Mediterranean 

 to St. Helena. (Jn., "W.) Gorgulho, Funchal, Punta de Sao 

 Lourengo. A good many young shells. One full-grown 

 specimen I secured in a rock-pool near the Gorgulho fort, 

 west of Funchal, after watching it for a considerable time. 

 As Philippi remarked, its rapid movements are extremely 

 unlike those of Patella. The broad membranaceous edge 

 of the shell flaps about in the moving water like a light cloak 

 in a breeze. The bright yellow colour of the animal and 

 of the integument of the shell (which suggested its very 

 graphic name) turns to deep brown in drying or even when 

 preserved in spirit. Subbed specimens are white with a 

 yellow tint. Adams's (Genera, ii. 42, Ixi. 4) description 

 and figure are both inadequate and incorrect. Vayssiere's 

 description in all its details, as well as his figure of the 

 animal and of the egg-ribbon, are admirable ; although the 

 last when I examined it, freshly deposited, seemed flatter 

 than is suggested by his term " demi-cylindrique." 



367. Tylodina Rafiiiesquii, 1836, Philippi, Enumeratio, 1. 114, vii. 

 8, & II. 89; Cantraine,Mal.Med.p.94. jHaJ. Mediterranean. 

 (W.) One specimen. — The form of the shell in this species 

 is so distinct from that in T. citrina,tha.t I find it impossible 

 to accept Vayssiere's suggestion and unite the two. I do 

 not gather from his remarks that he has ever seen Philippi's 

 species, whose figure, however, markedly shows the dif- 

 ference. 



Tornatina, see TJtriculus, 



Among the shells of Mr. Johnson's collection there occurred a specimen 



