( I 1:1 i INI 1.1. II.; 



utral tooth of the radula mult icii-pidate, lateral - ciirifonn, 

 t lie margin toothed, marginalfl narrou, with comb-like e\t remitie- 

 IM. 1!, ti. 



Marine, inhabiting temperate and tropical seal : t'-.^j], m-arl\ 

 Bpeciefl are enumerated, commencing in tin- Tria- ami attainin 

 maximum development in the ( Yetaceo u-. 



Submenu.- ( 'i:i;i TIIMM 9&DSQ BtrictO . 



Columella thickened, with a tooth-like posterior tubercle, outer 



lip dilated at the l>a>e, whorls varicose. 



i 



Section Cm. INA, II. and A. Adam>. I So:;. 



Shell elongated, whoi'ls nunierou>. convex, uoduloii-. sj)irally 

 >triate<l, aju-rture oval, prolonged in front into a >hort recurve.l 

 canal, columella simple, oblique, outer lip expanded and reflexed. 

 Middle whorls u'ihhous, seulpture usually obsolete on the last whorl. 



The few species inhabit deep water, sandy bottom, at the Philip- 

 pines, China, etc. 



Section LKX KKiTinr.M, Tryon, 1887. 



Shell pupoidal or subeylindrical, without ribs or nodule>, usually 

 spirally grooved. C. INCISTM, Sowb. 



Subgenus STILUS, Jeffreys, 18s.">. 



Shell spit-shaped, reticulated; apex forming a twisted and 

 abruptly semi-detaehed peak ; basal groove short and recurved. S. 



IN-KiMs. .Irtlrey-. 



Submenu- ( 'I:I:ITHIOIH-:I:MA, ( 'onrad, ISIJD. 



Acutely ovate, striate; lip ^nnvel, umbilicated, columella 

 recurved infei'iorly n- subtruncate; aperture patulou.-. margin 

 obtusely rounde<l interiorly : beak very slmrt, narrow, recurved. 



Fossil only. ( '. I-KIMA. Coin-. Kocenc, Alabama (Struct, and 



Byst ('onch.. t. (in, f. .")!). 



? Submenus Iii;A( IIY TI;I:.MA, .Morris and Lycett. l>">n. 



Shell turreted, turbinate. .-olid, \vhorls Qodoee, c^tulate or -an- 

 eellate, the last whorl larire. ventricose, an-'iilated ; c..lumella 

 smooth, rounded, ol>li|iirly truncate at the ba>e formiiiL: a short 

 oblique canal, aperture ob.-oletely channeled above, lip thickened 



and usually exteriorly .-ubvari'<~ < WRIGHTI, Cotteau IM. r.. 



. li >p.. .Jura->ie. Fui-ope. 

 8 



