232 PERRONA. 
cord; yellowish white, flexuously lineated with chestnut, the 
corded portion white. Length, 40 mill. 
W. Africa. 
Possibly only a heavy shelled variety of C. lineata. I think 
that C. tripartita (Smith), Weinkauff (fig. 4), is synonymous, as 
I have specimens intermediate between the two forms. 
C. sprraTa, Lam. PI. 8, fig. 5: 
Whorls constricted around the upper part, with a rather sharp 
ridge next the suture, and an obtuse angle below the constric- 
tion ; yellowish, mottled and striped with chestnut. 
Length, 1—1‘5 inches. 
W. Africa. 
C. perron, Chemnitz. PI. 8, fig. 8. 
Shell fusiform, turreted, rather smooth, pale yellow; whorls 
flat, with flexuous longitudinal lines, slightly angulated round 
the upper part, lower portion of the last whorl contracted and 
with several regular, distant revolving ridges; sinus nearly cen- 
tral. Length, 27 mill: 
W. Africa (Marrat). 
Is an intermediate form between C. lineata and C. spirata— 
which should probably be merged in one species. Chemnitz 
adopted a Dutch name ‘ the perron,” for this species, and Reeve 
erroneously supposing it to be in honor of a naturalist, changed 
its form to C. Perronii. 
C. MONILE, Val. PI. 7, fig. 96. 
Chestnut-brown, with a subsutural band maculated with 
darker chestnut spots; surface finely decussated with longitu- 
dinal and spiral strie. Length, 1 inch. 
Australia. 
Pleur. monile being preoccupied by Brocchi for a fossil species, 
Desmoulins changed the name to Quoyi; but the species figured 
under the latter name by Reeve and Weinkauff appears to me to 
be very distinct. In the present group the specific name monile 
is not preoccupied; I therefore restore it. 
C. GRACILIOR, Sowb. (Unfigured.) Habitat unknown. 
C. TuMIDA, Sowb. (Unfigured.) Agulhas Bank, So. Africa. 
