OBSEEVED AT MOGADOR. 179 



two specimens of the px'esent shell amongst many other interesting 

 species. 



57. Trochus carneus, Gm., DiUw. ; Globulus indusii, Chemn. v. 

 116, 1. 171. f. 1682. 



T. testa granulata solida crassa orbiculato-depressa aperte perspective 

 et profunde umbilicata cinereo-carnea v. rosea, apice valde obtuso ; 

 anfractibus planis, ultimo carinato, omnibus arete et sequaliter granu- 

 lato-striatis, granularum serie suprema ad suturam pauUo majore; 

 umbilico mediocri cylindrico simplice nee granulato nee dentato, iutus 

 canaliculato ; apertura depresso-orbiculata edentula simplice. 



Diam. maj. 6-8 lin., min. 5-7 ; alt. 3-6, Anfr. 5-6. 



The specimens being dead, and more or less bleached, are of a 

 uniform pale rose-red or pinky flesh-colour, with one exception, 

 which is pale cinereous or greyish-slate tinged with pink or rose. 



Le Vasset, Adans. 1. 12, might be mistaken for a rude figiu-e of 

 this species, but it certainly represents a young shell of T. Pha- 

 raonis, L. 



58, Trochios wnbilicatus, Mont., var. Icetus. Smaller, with a much 

 smaller umbilicus and somewhat more elevated spire than is usual 

 in British examples ; approaching the Herm Island var. mentioned 

 in r. H. Brit. Moll. ii. 521, but always with a distinct, though 

 often quite minute perforation. The colours are remarkably 

 bright, distinct, and lively. 



59, Trochus sanguineus (L.), Phil, i, 179 ; Turbo sanguineus, 

 Linn, Syst. ed. 12. 1235, Desh, in Lam, ed. 2. ix, 225 ; Turbo pur- 

 pureus, Eisso, Hist, Nat. iv, 116, f. 48 ; Globulus roseus, Chemn. v. 

 113, 1. 174, f, 1675, — Shell more depressed than in Chemnitz's or 

 E-isso's figures, and, except in the fewer stronger grooves and 

 imiformity of colour, strongly resembling small states of Tr. wn- 

 bilicatus, Mont. 



60. Trochus lineatus (Da Costa), F. H, ii. 525, t. 65. f, 4, 5 {T 

 crassus) ; T crassus, Pult., Mont., Maton and Back., Turt., Flem,, 

 DLUw., &c. ; Turbo lineatus, Da Costa, Donov. ; Monodonta lugu- 

 bris, Lam. ed. 2. ix, 180. — The Mogadorian shell is neither the 

 Madeiran nor Canarian, but precisely the English form or species. 



Trochus lineatus, Da Costa= (sec. F. H.) T. cinerarius, L, ; and 

 Trochus lineatus. Lam, ed, 2. ix, 141=again another very dif- 

 ferent Australian species. 



Though ranging all along the west coasts of the Peninsula 

 down to Mogador, this common British form or species does not 

 seem to enter the Mediterranean ; and it certainly does not occur 

 in either the Canaries or Madeira. It has apparently a predilec- 



