90 
CATAULUS §. 2. 
12. C, duplieatus Pfr. 
T. subperforata , fusiformi-ovata, solida, striata striisque 
spiralibus obsolete decussata, virescenti-fusca, pallide nebulosa; 
spira curvilinearis , elongata , apice acutiuscula; sutura levis, 
marginata ; anfr. 7 4 / 2 vix convexiusculi , ultimus attenuatus, 
antice subascendens ; carina basalis compressa , antrorsum vix 
dilatata; apertura circularis, basi axin vix excedens; perist. 
aurantiacum, duplex : internum bre viter porrectum , basi pro- 
funde incisum, externum rectangule patens, basi ad canalem 
angustum vix protractum, — Operc. norm. — Long. 18, diam. 
medio 7 mill. Ap. c. perist. 6 1 / 3 mill, longa, 5 lata. (Mus. 
Cuming.) 
Colaulus duplicatus Pfr. in Proc. Zool. Soc. 1854, p. 303. 
Habitat in insula Ceylon (Thwaites). 
13. C. Pfr. 
T. vix perforata, fusiformi-turrita, solida, subarcuatim co- 
stulato-striata, opaca , fusco-lilacea , strigis angulosis albidis 
marmorata ; spira subcurvilinearis, turrit a, apice obtusa ; sutura 
levis, filomarginata ; anfr. 8 planiusculi, ultimus vix attenuatus; 
carina basalis alba, compressa, antrorsum subdilatata ; apertura 
verticalis, subovalis; perist. album, duplex: internum basi pro- 
funde incisum , externum patens , ad canalem mediocrem re- 
tractum. — Operc. norm. — Long. 16, diam. 5 4 / 2 mill. Ap. 
intus 4 mill, longa , 3 4 / 2 lata. (Mus. Cuming.) 
Catavlus marginatus Pfr. in Proc. Zool. Soc. 1853. p. 52. 
— . — Pfr. in Malak. Bl. 1854. p. 90. 
Tortulosa marginata H. et A. Adams Gen. rec. Moll. II. p. 285. 
Habitat in insula Ceylon. 
XII. Rhaphaulus Pfr. 
Operculum tenuissimum, corneum, subangustispirum , ex- 
tus concaviusculum. — Testa umbilicata, pupinaeformis ; aper- 
tura circularis; perist. subduplex: internum continuum, exter- 
num dilatatum , ad insertionem marginis dextri canali aperto 
perforatum, canali suturali interno profunde in caverna spirae 
desinente, utrinque pervio. 
