208 BULLETIN OF THE 



Aspella? scalarioides Blainville (em.). 



Murex scalaroides Blainville, Fauna Fran9aise, p. 131, pi. 5 a, figs. 5, 6, 1826 ; Monte- 



rosato, Bull. Soc. Mai. It., V. p. 227, 1879. 

 Murex scalarinus Bivona-Bernardi, Nuovo Gen. Moll., p. 27, pi. iii. fig. 11, 1832. 

 Murex distinotus Cristoforis e Jan, Cat. No. 4, pi. xi. fig. 2, 1833 (or later) ; Phi- 



lippi, Moll. Sicil., I. p. 209, pi. xi. fig. 32, 1836 ; Reeve, Conch. Icon. Murex, 



fig. 161, 1845. 

 Murex Itucoderma Scacchi, Cat. Concliyl. Reg. Nap., p. 12, fig. 16, 1836. 

 Ocinebra scalaroides Kobelt, Jahrb. Mai. Ges., IV. p. 244, 1877. 

 Murex (Muricidea) scalarioides Brugnone, Bull. Mai. Ital., III. p. 29, 1877. 

 Poweria scalarina Monterosato, Nom. Gen. Conch. Medit., p. 113, 1884. 



Habitat. Mediterranean and. Adriatic. 



Aspella scalarioides var. paupercula C. B. Adams. 



Murex pauperculus C. B. Adams, Contr. Conch., p. 60, 1850. 



Triton Cantrainei Recluz, Journ. de Conchyl., IV. pp. 246, 418, pi. viii. fig. 10, 1853; 



and V. p. 156, 1856. Krebs, Cat., p. 21. 

 Ocinebra Cantrainei Kobelt, Jahrb. Mai. Ges., IV. p. 244, 1877. 



Habitat. West Coast of Florida, in 50 fms. 



Aspella scalarioides var. lamellosa Dunker. 

 Ranella lamellosa Dunker, P. Z. S. 1862, p. 240. 

 Habitat. Florida Keys, Bermuda, Antilles. 



Aspella scalarioides var. obeliscus A. Adams. 



Murex obeliscus A. Adams, P. Z. S. 1851, p. 269; Sowerby, Thes. Conch. Murex, fig. 



233, 1879. 

 Murex alveatus Reeve, Conch. Icon. Murex, figs. 157, 163, 1845. 

 1 Murex alveatus Kiener, Icon. Murex, p. 24, pi. xlvi. fig. 2. 



Habitat. St. Thomas, W. I., Adams; Vera Cruz, Mexico, Strebel. 



The characters which I take to be of more than specific value in this poly- 

 morphic form are as follows: — 



Nucleus small; at first obliquely and loosely wound, like a "stranded" rope, 

 giving the appearance at first sight of a reversed nucleus ; its material not 

 different from that of which the rest of the early whorls are formed. 



Shell with a tendency to lateral compression, as in Gyrincum, which may be 

 more or less constant in the same species or vary during the ages of the same 

 specimen. 



Operculum elongated, acute, with an apical nucleus, resembling the opercu- 



March 13, 1889. 



