OBSERVED AT MOGADOB. 195 



none (?). Colour pale yellowish or glaucous-grey, mottled or 

 marbled with chestnut. Shell 6 or 7 in. long, 3|^ or 4 in. wide. 



Gymhiwn excavatum, Martini, 3. 44. t. 70. ff. 762, 763. Valuta 

 Cymbiicm, Lam. ed. 2. x. 380 ; Swains. Exot. Conch, (no fig.). 

 Cymha Cymbium, Sowerb. Gen. f. 2 ; Sp. Conch. 7. fi". 9 a-d. Yetus 

 Cymbium, Gray in Proceed. Zool. Soc. 1855, p. 52 (in part). 



Sab. "Atlantic Ocean," Lam.; "African Ocean," Sowerh. ; 

 " West Coast of Africa, Gambia," Gray. 



90. Melampus cequalis, Lowe in Zool. Journ. v. 288. t. 13. 

 ff. 1-5 (var. a). 



B. Land Shells, the animals breathing air by a valvular re- 

 spiratory orifice on the side of the neck. 



These belong altogether in their general characters or aspect to 

 the South European type ; and only so far as that type exists in 

 the Canaries are they related to the Canarian : having still less 

 affinity to the Madeiran, in consequence of the still less prevalence 

 of the South European character in the Madeiran Helicological 

 Fauna than in that of the Canaries. This observation, founded on 

 the general aspect of the fifteen species collected by me in the 

 immediate vicinity of Mogador, is confirmed by their statistical 

 analysis. Eight are common South European, one only Canarian, 

 and six Moroccan species ; the seven latter exhibiting a wholly 

 South European aspect. Of the former eight, three only are 

 found in Britain, five in the Canaries, and four in Madeira : of the 

 seven latter, none of com'se in either Britain or Madeira, though 

 one of the six peculiar Moroccan species {H. Pumilio, Chemn.) is 

 very nearly allied to the exclusively Canarian H. Despreauxii, Orb. 

 (a form which has no Madeiran representative), whilst the five 

 others as nearly approach common South European forms. 



30. Helicid^. 



Gen. Helix, L. 



Group 1. Euparypha, Hartm. 



Helix pisana, Mull. ; var. y, Pf. ; alboranensis, Webb. 

 planata, Chemn., a acutangula, j3 obtusangula. 



Group. 2. Xerophila, Held. 



caperata, Mont., y mogadorensis. 



Eumseus, Lowe. 



5. Irus, Lowe. 



lancerottensis, Webb, a Webbii, ^ Bertbcloti. 



