150 nURMA, ITS PEOPLE AXD I'llODUCTJOyS. 



Family Terebridse. 



Radula and tcctli rucliuientury or wanting. Tontaclcs small or wanting. Foot 

 small. Opurculuui annular. Xutk'us apical. 



TEREBIIIXJ5. 

 Acus, Humphrey. 

 Eyes on the tip of the tentacles. 



* ,, DIJPLICATA, L. 



*iLiSTUL\ ANOiiALA, Hinds. 

 Terebea, Adanson. 

 Eyes at the outer bases of the tentacles. 



* ,, steaminea, Eeeve. 



* ,, SwAiNSONi, Ileeve. 



* ,, MYVEUs, Hinds. 



* ,, FoRTUNEi, Reeve. 



,, AFFiNis, Gray. Andamans. 



„ ExiGTJA, Desh. Andamans. 



Family Pyramidellidae. 



Eadula unarmed, teeth none, or rudimentary. Tentacles broad, carshapod, 

 connate at their base, and bearing the eyes immersed on their inner sides. A rudi- 

 mentary siphonal fold. Foot produced anteriorly, truncated and with a fold in front. 

 Operculum horny. iSliell turrited, aperture entire, not produced. Columella plaited. 



Pteahidella, Lamarck. 



Shell turrited, many-whorled. Longitudinally ribbed. 



* ,, VAEiEGATA, Adams. 



* „ aueis-cati, Chem. Andamans. 



Obelisctts, Humphrey. 



Shell subulate; many-whorled, smooth. Oheliscus differs from Eulimella by 

 having the columella plaited; from Pyramidelhi by wanting the longitudinal ribs; 

 and from other members of the family by its plaited columella and subulate form. 



* ,, niiABiATrs, Adams. 



* ,, TEEEBELLUM, ReCVC. 



* ,, VENiEicosus, Guer. 



Family EulimidSB. 

 Radula and teeth rudimentary. A rudimentary siphonal fold. Foot produced 

 in front, with a bilobed fold above the front margin. Operculum horny, ovate, sub- 

 Bpii'al. Shell turrited, white, apertiu'e entu-c in front. Columella simple. 

 EuLiMA ACTJTrFEONs, Nov. Andamans. 



,, ACUFOEMis, G. and H. Nevill. Andanums. 



Family Cerithiopsidae. 



Eyes placed centrally at the base of the subulate tentacles. Ifouth aimed with 

 a retractile proboscis. Foot quadrate in fiont, furaished superioily with a fold, 

 grooved below fur half its length, the groove ending in a perforation. 



Ceeithiopsis pagodula, a. Adams. 



Family Solariidae. 



Tentacles folded, with the sutiue below. Oi)crculum horny, spiral, ovate or 

 circular. Shell depressed, trochiform, not pearly. Radula unarmed. 



