244 MANGILIA. 
M. BertRanvI, Payr. Pl. 21, fig. 12; Pl. 32, fig. 47. 
Shell chestnut- or chocolate-brown, with usually an indistinct 
central darker band, ribs often white; whorls rounded above, 
without distinct shoulder. Length, 9-14 mill. 
Mediterranean Sea. 
M. cerulans, Phil., is a synonym. The M. cerulans figured 
by Appelius (PI. 32, fig. 47), and which Monterosato bas named 
M. indistincta, does not appear to differ materially; it has not 
been described. 
M. costaTa, Forbes and Hanley. PI. 34, fig. 17; Pl. 32, fig. 37. 
Shell with 7 or 8 stout ribs; whorls without shoulder; 
Spire varying in length; spire and upper half of the body-whorl 
chestnut- or chocolate-color, lower half of body-whorl light 
yellowish brown, sometimes yellowish brown with darker linea- 
tions. Length, 12 mill. 
Sweden to Mediterranean. 
Mr. Jeffreys says: “The Murex costatus of Pennant is a 
mixture of small shells belonging to different genera.” I follow 
him in ascribing the name to Forbes and Hanley who have 
accurately diagnosed the species, rather than to any of those 
earlier authors who used it indefinitely. The P. coarctata, 
Forbes (fig. 37), is merely a larger form of this species, mainly 
northern in distribution. J. pusilla, Reeve, and J. balteata, 
Reeve, are both made synonyms by Forbes and Hanley; they 
are described without locality, but the former has shouldered 
whorls and too many ribs, and the latter has heen identified as 
Australasian by Mr. Brazier, and as West Indian by Mr. Swift. 
M. Sicuna, Reeve. PI. 21, fig. 10. 
Shell chestnut- or chocolate-brown within and without, with 
narrow brown lines, more conspicuous on the thickened lip, 
which is lighter colored ; whorls rounded, rather gibbous, those 
of the spire obtusely angulated. Length, 12 mill. 
Sicily, Adriatic Sea. 
Pl. plicatum, Phil, is a juvenile. 
M. MULTILINEOGATA, Deshayes. PI. 22, fig. 53. 
Longitudinal ribs rather numerous, close together, curved ; 
