PLATE XXXIII. 
I, 2. Cassidaria Carinata. (. Keeled Cassidaria.) Pyriform; body very large, obliquely flattened ; spire 
short, with five or six, tapering, depressed, angular volutions; apex acute; body, with three ribs and many 
undulous, transverse, decussated strise ; aperture oblong; beak recurved ; pillar lip concave, reflected on colu¬ 
mella, with many tooth-like processes on inner margin, and two or three on inner margin of outer lip; outer 
lip broad, smooth on margin. 
3, 4. C. Striata. ( Striated Cassidaria.) Ovate; body large; spire small, with five or six, rounded, 
tapering volutions ; apex sharp ; with transverse, wide-set stride ; spiral ridge of oblong nodules on upper part 
of body, crossed by indistinct lines of grow r th ; aperture elongated, narrow; pillar lip reflected on columella; 
canal narrow, bent, toothed within ; outer lip broad, plicated internally, reflected over umbilicus. 
5, 6. Rostellaria Calcarata. ( Spur-shaped Rostellaria.) Turreted, with six or seven volutions ; crossed by 
many, longitudinal, elevated, linear, curved ribs ; body carinated ; with close striae ; outer lip with large, oblong 
ascending process like curved spur; beak short, acute ; inner lip entire. 
7, 8. Cassis Bicatinatus. ( Double-chained Cassis .) Ovate, ventricose; spire, with five volutions; apex 
obtuse; with many transverse, prominent, narrow ribs; w T ith broad intermediate sulci, decussated by small, 
oblique, longitudinal costae, like a chain ; aperture ovate ; canal short; pillar lip reflected on plaited columella ; 
outer lip thickened, rounded, reflected, obscurely tuberculated within. 
9, 10. Dolium Nodosum. (Nodulous Dolium.) Ovate, ventricose; spire depressed, with three volutions 
and spiral-rounded belts ; crossed by a few, wide-set, longitudinal stri® ; apex flattened ; with numerous trans¬ 
verse rows of large, flattened knobs and intervening sulci. 
II, 15. R. Parkinsoni. (Parkinson's Rostellaria.) Turreted, with numerous, oblique, longitudinal ribs, 
transversely striated ; lower volution of spire ribbed; outer lip expanded, with only one, large, subulate, spur¬ 
like process ; aperture elongated, narrow ; beak long, subulate, pointed ; canal very narrow. 
12,13. R. Rimosa. (Cleft Rostellaria .) Fusiform, shining ; spire, with eight or nine convex volutions; 
apex acute, with many longitudinal ribs; transversely striated; columella strong; aperture obliquely ovate ; 
canal deep; outer lip reflected, flattened, with sinus; beak straight, short. 
14. R. Bispinosa. (Two-spined Rostellaria.) Turreted; spire, with seven volutions; apex acute; acute, 
spiral carina in centre of volutions ; beak fairly long. 
16. R. Pes Pelicani. (Pelican's Foot Rostellaria.) Spiro pyramidal, tapering, with eight or ten, transversely 
ribbed and carinated volutions; apex acute; body, with two rows of tubercles on keels; outer lip expanded, 
quadrifid; its upper angle extending high upon spire ; beak acutely pointed, with shallow canal in centre. 
17, 18, 19. R. Macroptera. (Long-winged Rostellaria.) Fusiform, smooth ; spire taper, acute, with ten to 
fourteen volutions; apex sharp; aperture oblong-ovate ; inner lip smooth, shining, reflected on columella ; outer 
lip very large, semicircular ; canal bent, long ; beak short, pointed. 
20, 21. R. Lucida* (Shining Rostellaria.) Glossy, fusiform ; spire, with eight tapering volutions; apex 
acute; crossed by many, transverse, elevated, obtuse striae; inner lip smooth, reflected on columella; outer lip 
thickened, with very short canal; beak very short. 
22. R. Composita. (Composite Rostellaria.) Turreted; spire costated with seven volutions; apex acute; 
lower volution bicarinated; columella smooth ; outer lip spreading, with canal at upper end, and with spine 
where superior carina ends upon margin. 
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