Gena auricula, Lamarck. 
Hab. Eastern Seas ; Red Sea; Celebes. (Mus. Cuming.) 
Stomatella auricula, Lamk. Hist. An. s. Vert.wi. p. 210. Patella 
lutea, Linn. 
Gena nigra, Quoy and Gaimard. 
Hah. Eastern Seas. (Mus. Cuming.) 
Stomatella nigra, Quoy fy Gaimard , Voy. de VAstr. v. 3. pi. 66 bis, 
fig. 10-12. 
Gena plumbea, Adams. G. testd haliotided, ovato-oblongd, 
dorso latere dextro gibbosd, sinistro planulatd, plumbed, decus¬ 
sate totd striatd; spird prominuld, anfractibus rotundatis , 
anfractu ultimo ad suturam gibboso ; aperturd postice subcana- 
liculatd , labro in medio flexuoso. 
Hab. Java. 
Shell gibbous on the right side, flattened on the left, lead-coloured, 
decussately striated over the back; spire rather prominent, the 
whorls rounded, last whorl gibbous at the suture ; aperture slightly 
channeled posteriorly, outer lip flexuous in the middle. 
Hab. Java. (Mus. Cuming.) 
Gena strigosa, Adams. G. testd haliotided, ovato-oblongd , 
dorso subplanatd, totd striatd, striis irregularibus sub confer tis, 
olivaced lilaceo alboque varia, /asciis subfuscis, pallidis alter- 
nantibus longitudinaliter ornatd, labro hand sinuoso. 
Hab. -? 
Shell rather depressed, the back equally convex, striated all over, 
olivaceous varied with white and lilac, marked with alternate light 
and dark bands, the light bands sometimes articulated; spire de¬ 
pressed, outer lip slightly sinuous. 
Hab. -? (Mus. Cuming.) 
Gena striatula, Adams. G. testd haliotided, ovato-oblongd, 
dorso planiuscula, totd striatd , striis profundis subdistantibus, 
rubra, flaveolo aurantiaco fuscoque variepictd ; spird prominuld, 
nunquam subdistortd ; labro valde flexuoso. 
Hab. Australia; et in insulis Philippinis. 
Shell very elongated, slightly convex, strongly striated all over the 
back, red varied with orange, light yellow and brown ; spire elevated, 
often distorted; outer lip very flexuous. 
Hab. Calapan, island of Mindoro, on small stones, 9 fathoms; H. C. 
Swan River, Lieut. Preston; Australia. (Mus. Cuming.) 
Gena varia, Adams. G. testd haliotided , ovato-oblongd, politd, 
dorso cequaliter convexd, latere sinistro striatd; luteo, rubro 
alboque variegata ; spird prominuld, erectd, acuminata. 
Hab. Australia ; et in insulis Philippinis. 
Shell smooth, polished, back equally rounded, striated on the left 
side, varied with yellow, red and white ; spire rather elevated, lateral, 
upright and pointed. 
Hab. Calapan, island of Mindoro, on small stones, 9 fathoms; H. C. 
