MARINE MOLLTJSCA OP MADEIRA. 325 



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

 The subgeneric name is given above as Eafinesqne (Ann. 

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

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



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

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

 Erotn the Lofotens to the Mediterranean. ( W.) Eunchal ; 

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

 hesitation, but I cannot admit either T. triplicate, Broc, or 

 T. bicingulata, 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 Guerin's Mag. de 

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

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

 to St. Helena. (Jn., W.) Gorgulho, Eunchal, Funta de Sao 

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

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

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

 As Fhilippi 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. Eubbed specimens are white with a 

 yellow tint. Adams's (Genera, n. 42, lxi. 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 Sajinesquii, 1836, Philippi, Enumeratio, 1. 114, vii. 

 8,&n.89; Cantraine,Mal.Med.p.94. Sab. Mediterranean. 

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

 is so distinct from that in T. citrina,that 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 Utriculus, 



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



