76 M.0.A.L. MORCH’S REVIEW OF THE VERMETIDE. [Feb. 11, 
Var. @. BADIA. 
Differt a precedente T. angustiore crassiore et colore badio. 
Diam. aperture 4 m. 
Hab. I, Philippin. (Mus. Cuming, specimen detritum), 
16. THyLACODES SQUAMIGERUS, Carp. 
T. majore, flavido-albida, solute spirali, plerumque glomerata ; 
superficie costis spiralibus, squamis instructis, costulis pluribus 
intercalantibus ; squamulis minoribus; squamis et squamulis 
imbricatis; interdum aperturam versus sculptura obsoleta 
(Carp.). 
Aletes squamigerus, Carp. Proc. Zool. Soc. 1856, p. 226; Carp. 
Report, p. 324. 
Hab. St. Barbara (sp. magn. glomer. in Mus. Nuttall); St. Diego 
(Mus. Gould). 
A fine group of this shell is in Mr. Nuttall’s collection. It agrees 
in the main with the Mazatlan species, but differs in colour and 
sculpture. Mr. Nuttall believes that he found another species with- 
out scales. ( Carpenter.) 
I refer this shell to the present genus, because I believe it is spe- 
cifically identical with the following variety. 
Var. a. PENNATA. 
T. solitaria, tenuis, laqueatim torta, aperturam versus ampliata ; 
anfr. inferne inequales, planiusculi ; lire longitudinales com- 
pressiuscule, noduloso-serrate, alternatim minores, mterstitiis 
interdum lirula parva intercalante ; lire incrementi sepe casta- 
nei vel badit, conferte anguloso-undate, pulcherrime, presertim 
si versus lucem teneas, in intersectionibus lirarum incrassate, 
unguiculate, squamifere ; apertura orbicularis. Color inferne 
albus, fascia violaceo-fuscu, superne flavescens ; linee hic illic 
badie vel nigre strigisque transversis flexis; anfr. primi cas- 
tanei ; faucibus albis, macula badia inferne juxta aperturam. 
Diam. aperture 10 m. 
Vermetus margaritarum, Voy. de la Vénus, pl. 11. f. 2 (fig. mi- 
nor); Chenu, Ill. pl. 4. f. 2 (copy). 
Hab. California (Mus. Cuming). 
This shell differs chiefly from 7. decussatus, Gm., which is its 
West Indian analogue, in the larger calibre of the whorls. The 
strie of growth are bent in a beautiful manner, giving the lire a 
pennate appearance, which is best seen when the shell is held against 
the light. Although Carpenter does not mention the transverse 
black lines, yet I suppose that this shell is the young of Aletes 
squamigerus, because Carpenter (Cat. p. 303) states that the Aletes 
centiquadrus, var. imbricatus, has some characters in common with 
the young of the great Californian Vermetid Aletes squamigerus. 
The figures quoted are exceedingly like the variety, but the whorls 
are somewhat too narrow. 
