GEN A. 



Plate II. 



Gena 



Species 8. (Fig. a, b, Mus. Brit.) 

 rARiA. Gen. testa pan-d, varicgatd, Imvigatd, 



ohllqitd, postice suhangusiatd, antk'c suhcxpansd ; 

 spiid paulo essertd, aaiminatd, lahio eoliniicllari, 

 albo, valde arcuato. 



The various Gena. Shell small, variegated, smooth, 

 oblique, posteriorly rather narrowed, anteriorly 

 slightly expanded ; spire a little exscrted, acu- 

 minated, culumellar lip white, much arched. 



A. Adams. Proc. Zool. Soc, 1S50. 



Hab. Isl. Mindoro, Philippines. 



Nearly resembling Gena lutea, but broader and not 

 so much depressed on the upper part of the last whorl. 



Species 9. (Mus. Brit.) 



Gena ornata. Gen. testd solicld, orbiculatd, fusco- 

 rubrd, lineis nigris, albo articulatis spiralibus 

 omatd ; ultimo anfractu dorso rotunda ; spird 

 parvd, acuminatd, rubra ; aperturd medivcri, 

 fulvd. 



The ornate Gena. Shell solid, orbicular, red-brown, 

 ornamented with black spiral lines articulated 

 with white ; last whorl rounded at the back ; spire 

 small, acuminated, red ; aperture medium-sized, 

 fulvous. 



A. Adams. Proc. Zool. Soc, 1850. 



Hab. Isl. Ticao, Philippines. 



Species 10. (Mus. Brit.) 



Gena caliginosa. Gen. testd obliqxid, elevatd, Iceris- 

 simd, nigra ; spird elevatd, acuminatd ; aperturd 

 oblique ovatd ; lahio columdlari eilbo, lenti arcuato. 



The dark Gena. Shell oblique, elevated, very smooth, 

 black ; spire elevated, acuminated ; aperture 

 obliquely ovate ; columellar lip white, gently 

 arched. 



it A. Adams. 



Species 11. (Fig. a, b, Mus. Brit.) 



Gena nigra. Gen. testd oblique auriformi, elongato- 

 ovati, convexd, Iceri, nigrd vel vaiiegatd, intiis 

 violaceo-nacred ; .yjird m iniitd, fere terminali ; 

 aperturd ovatd. 



The black Gena. Shell obliquely auriform, elongated- 

 oval, convex, smooth, black or variegated, purplish- 

 pearly within, spire very small, nearly terminal, 

 aperture ovate. 



Qdov. Voy. de 1' Astrolabe, t. 17, figs. 154, 155. 



Hab. Tonga-Tabou, Sandwich Islands. 



Sr 



es 12. (Mus. Brit.) 



Gena strigosa. Gen. testd oblique ovatd, convexd, 

 variegatd et spiraliter strigatd, minute fasciculatim 

 striatd ; aperturd oblongd, ovatd ; labio externa vix 

 sinuato ; spird subplanulatd. 



The striped Gena. ^hell obliquely ovate, convex, 

 variegated and spirally striped, with minute 

 strisB in bundles ; aperture oblong, ovate ; outer 

 lip scarcely sinuated; spire partly flattened. 



A. Ai>ams. Proc. Zool. Soc, 1850. 



Ilah. I 



More uniformly convex than Gena striatula, with 

 the stris inclining to run in groups, and with faint 

 stripes traceable through the clouding and marking of 

 the colours. 



April, 1874. 



