200 A DESCRIPTIVE CATALOGUE OF THE 



sage Island; young specimens on dead Madrepores from three feet depth (Krebs); 

 St. Jean, Vieque (Eiise) ; Guadeloupe (Bean). 



This species, which is the most common in the West Indies, is generally con- 

 sidered identical with allied species in the Mediterranean and Pacific. 



1, Scala pseudoscalaris, Brocchi, Desh., from the Mediterranean, differs by the 

 shell being much narrower, the ribs equal, and the ambulacra nearly straight. 



2. Scala perplexa, Pease, Proc. Zool. Soc. 1860; Am. Journ. of Conch, iii, p. 

 228; Desh. Moll. Eeunion, p. 60, t. viii, f. 1, v. Martens Donum Bismarckianum, 

 t. i, f. 19. 



Differs in having single high ribs alternating with pairs of lower ribs. 



26. Scala coronata, Lam. 



T. tenuis, lineis spiralibus sub lente distinctissimis ; anfr. perconvexi sutura constricta, costee xv 

 -xvi in anfr. ult., lineares sed 1 vel 2 crassiores. Color albus, fasciis angustissimis 3 e mac- 

 ulis obliquis compositis ; fascia suturali angusta plerumque obsoleta. 

 Long. 33 ram.; diam. 14 mm. 



Scalaria coronata. Lam,, Enc. Meth. 1816, PI. 451, f. 5; Lam. Hist, vi, p. 227, 

 n. 3; Lam. Hist. ed. Desh. ix, p. 74, n. 3; Desh. Enc. Meth. iii, p. 930 (1832); 

 Kiener, Spec. Gen. tab. 3, f. 8"; Sowb. Thes. p. 101, f. 133*; Bean, Cat. Moll. 

 Guadel. p. 12. 



Hob. Antilles (Dr. Ravn. Com. Falsen, Nissen, Mrs. Eckardt) ; Guadeloupe 

 (Bean). 



In the collection of Christian, VIII, are found five specimens from the above 

 collectors about from the years 1833-39, but I am not aware that this shell has 

 since been collected at the Danish Antilles. Kiener indicates Cape of Good Hope 

 as the locality for this species, but no author has since confirmed this assertion. 

 The figure in the Encyclop. Meth. is the best, showing the whorls very convex and 

 the sutures deep. The figures of Kiener and Sowerby show flat whorls like the 

 preceding species. Mr. Deshayes indicates the number of ribs on the last whorl 

 as 19-20. 



Sect. *****. Amoea, H. and A. Adams. 



27. Scala (amcea) turricula, Sowb., PI. 29, fig. 7. 



T. obtecte perforata, turrita, gracilis, alba, fasciis 2 interruptis ferrugineis, spiraliter lirata; lirag 

 confertissimse, ad regionem suturalem regulares, interstitia majora funiculis confertis munita ; 

 costse xii-xiii in anfr. ult., plerumque lineares siraplices, ultima et penultima et hue illuc in 

 anfr. spirse crassaj, ad suturam spinula adunca munitse. Apertura ovalis, peristomate con- 

 tinuo ad umbilicum angulatum. 

 Long. 15 mm.; diam. 6 mm. (Fragm. spm. maj.), diam. 7 mm. 



