1885.] 'lightning' AND 'porcupine' EXPEDITIONS. 39 



2. Solarium carocollatum, Lamarck. 



S. carocollatum. Lam. An. s. Vert. vii. p. 6. 



S. moniliferum (Bronn), Monterosato, Notizie int. Sol. Med. f. 5, 

 6,7. 



'Porcupine' Exp. 1870: Atl. St. 6, 8, 9, 25-30; Med. C. de 

 Gata, .50, Adventure Bank. 



Distribution. Both sides of the Mediterranean, and off the Azores 

 ('Josephine' Exp.): 40-GOO fms. 



Fossil. Miocene : Vienna Basin, Marseilles, and St. Domingo 

 {Homes), Dax and Leognan (Basterot). Pliocene : (?) Biot, Northern 

 and Central Italy, and Sicily. 



3. moniliferum, Bronn, S. affine, Cantraine (not of Sowerby), and 

 ;S'. alleryi, Seguenza. 



The same remarks as to the sculpture, spire, and umbilicus are 

 applicable to this as well as to the last species. 



Operculum imbricate. Torinia, Grray. 



3. Solarium siculum, Cantraine. 



S. siculum, Cantr. in Bull. Acad. Brux. ix. 2. p. 343 (1843). 



S. stramineum, Philippi, Conch. -Cab. ed. KUster, p. 32, t. 4, f. 14. 



'Porcupine' Exp. 18G9: St. 45a, 456 (two living specimens). 

 1870: Atl. Setubal B., off C. Sagres ; Med. 50, Benzert Road, 

 Basel Amoush, Adventure Bank. 



Distribulinn. G. Gascony {Be Folin), Vigo {McAndreio), Medi- 

 terranean, coast of Barbary {Ponsonby), Madeira and Canaries 

 {McAndreiv) ; 8-90 fms. 



Fossil. Miocene : Calabria {Seguenza). Pliocene : (?) Biot, 

 Central and Southern Italy. Post-tertiary: Rhodes {Homes). 



8. stramineum, Philippi (but apparently not of Lamarck, whose 

 species was founded on the description and figures of Chemnitz for 

 a Tranquebar shell); it is also S. fallaciosum of Tiberi. 



A specimen in Weinkauff's collection, named " S. discus, Phil.," 

 is the young of the present species. 



4. Solarium archit^, 0. G. Costa. 



5. architcs, O. G. Costa, Cat. test. viv. Taranto, in Atti Ace. So. 

 iii. p. 40 (1830) ; Fauna del Napoli, p. 5, t. i. f. 1«, A, B, C (1841). 



'Porcupine' Exp. 1870: Atl. St. C. Sagres; Med. 50, Benzert 

 Road, Rasel Amoush, Adventure Bank. 



Distribution. G. Gascony {De Folin) !, and throughout the Medi- 

 terranean ; 30-120 fms. 



Fossil. Pliocene : Bolognese {Foresti). 



S. sowerbyi of Hauley. 



The operculum is conical and prominent. 



Homalaxis ZANCLiEUs, Philippi. 



Bifrotitia ? zancltEu, Ph. Moll. Sic. ii. p. 225, t. xxviii. f. 11. 

 'Porcupine' Exp. 1870: Atl. St. 27, 28, 28« ; Med. Rasel 

 Amoush, Adventure Bank. 



