143 BULLETIN OF THE 



visions. Cymbium being eliminated, the next name is Fulgoraria, which has a 

 too evidently limited application to be adopted for the whole group left anony- 

 mous by tbe abstraction of Voluta. The classification of Swainson comes next 

 in order, and by treating his nomenclature according to the accepted rules we 

 find ourselves with three names to select from, Cymbiola, Harpula, and Sca- 

 phella. It would seem at the first glance as if this might be decided by tbe 

 types, but on thorough examination it appears that Swainson was not strict in 

 his vise of the expression " type," and named a number of different species as 

 " types" of a single genus in different parts of tbe same work. His reasoning 

 is so entangled with his peculiar theory of representative groups, as to make 

 his meaning 'frequently obscure. However, of the names above referred to, 

 Harjpula may be eliminated, as he figures V. vexillum as the example of the 

 genus, and moreover this section is, as it were, somewhat intermediate in its 

 characters, and some day may prove to belong in the vicinity of Voluta proper. 

 Of the two remaining names, Cymbiola is more restricted in the forms referred 

 to it. In one place V. aucilla is cited with a query as to whether this is the 

 type or not (p. 317) ; at another place the author queries whether V. ancilla 

 should not form a separate division (p. 106), and on the same page refers to 

 V. vespertilio as the type of the whole genus. Yet we find V. ancitki referred 

 to as the type of Cymbiola by authors of distinction. \^ 



The " best known type" also figured (p. 107) by Swainson for his genus 

 Scaphella is the S. undulata. This group includes a larger variety of forms 

 than the other, and recommends itself to us as on the whole the better for our 

 purpose, and will be here adopted. 



Scaphella junonia Hwass. 



Plate XXXIV. Figs. 5, 5 c, 5d, 5e. 



Voluta junonia Hwass, Chemnitz, Conchyl. Cab., XI. p. 16, pi. clxxvii. figs. 1703, 



1704 ; 1795. Swainson, Exotic Conchology, pi. xxxiii. 

 Scaphella junonja Swainson, Malacology, p. 108, 1840. 



Habitat. Pass-a-Grille, Florida, on the beach, Hemphill ; Florida Keys, 

 Jewett ; Florida Reefs, Pourtales; Station 2608, U. S. Fish Commission, 17 

 miles S. E. by E. ^ E. from Cape Lookout, North Carolina, in 22 fms., sand 

 and shell, bottom temperature 78°.2 F. ; Station 2414, in the Gulf of Mexico, 

 between Tampa Bay and Dry Tortugas, lat. 25° 4' N., Ion. 82° 59' W., in 26 

 %is., sand ; and near Nassau, New Providence, dead in shallow water. 



The adult shell is well known and has been repeatedly figured. It has no 

 overglaze. The characters of the nucleus and the young have been less pre- 

 cisely stated, except as might be inferred from a study of the adult. Chemnitz 

 pointed out that the early whorls are sculptured, and that a coarse spiral stria- 

 tion is faintly visible toward the anterior end. The anterior plaits are less 

 strong than those behind them, especially in the young, a feature which was 

 the chief character relied upon by Swainson in his division of the Volutidse. A 



