298 LAND AND FRESHWATEK 



" The type described by Philippi appears to have been immature, 

 as was certainly the shell figured by Pfeiffer in Mart. & Chemn. 

 Conch.-Cab. 2iid ed. no. 687, pi. 110. ligs. 1-3. The two specimens 

 obtained by Theobald from Ataran, now in the British Museum, 

 are probably the first adult shells described. 



" This species is distinguished from H. textrina by much coarser 

 sculpture, descending last whorl, and more oblique and small 

 aperture." 



Largest specimen preserved in spirit by Mr. Theobald measures 

 29-25 X 25 X 10-5 mm. 



Sabika theodori, Phil. (Plate CXXIX. figs. 3-3 c.) 



Locality. Mergui ( Wm. Theobald). 



Animal. Ochre ; an overhanging lobe to raucous gland ; the 

 peripodial margin (fig, 3) closely fringed, the parallel grooves 

 close together forming a narrow peripodial line, from which run 

 upwards to the keel of the foot very close-set well-marked regular 

 furrows. Sole not divided. Avery small right shell-lobe (fig. 3), 

 below the inner upper angle of the aperture. The buccal mass 

 has a very powerful solid muscle, given oft' from the basal side ; 

 the salivary glands are in one large mass. 



The genitalia (fig. 3 a) were not at full maturity. There is an 

 amatorial organ with a blunt termination ; the male organ has no 

 cfecum near the retractor muscle, the epiphallus is short with a 

 very elongate kale-sac where the vas deferens joins ; the sperma- 

 theca is short. 



The radula (fig, 3 c) was not extracted complete, but enough 

 was seen to show the formula to be 



4-25 . 18 . 1 , 18 . 25 + 



The marginals were quite broken up. The central tooth is on a 

 quadrate plate with side cusps, the admedians have a single cusp 

 on the outer side, at the 16th, 17th, and l&th this is small and 

 low down, but gradually rises towards about the 28th, until 

 at the 38th and onwards the teeth are very nearly evenly 

 bicuspid. 



The jaw (fig. 3 h) is very solid, arched, and with a central 

 projection. 



The teeth of the radula are like those of Sarika resplendens, 

 the genitalia are also quite on the same plan, Thei regular, closely 

 wound shell is of the same type. 



In the Tauna of British India' (Mollusca) this species was 

 placed in Hemiplecta, together with H. textrina, Bs, and H. gor- 

 donice, Bs. ; both from this part of India, the former ranges to 

 Prome and Thyetmyo in Pegu. Both species I consider should 

 be better placed in the genus Sarika. 



