MOLLUSCA OF INDIA. 179 



Genus Sakika, nov.* 

 Type resplendens, Phil. 



OroHa resplendens, Albers, Die Helieeen, 1860, p. 58. 



Nanma (MacrocMamj/s), G. Nevill, Hand-list, i. p. 20. 



For rest of synonymy see Vol. I. p. 109. 



Shell depressed, flat on base, smooth, shining ; whorls very closely 

 wound and regularly increasing. 



Animal with right and left mantle-lobes as in Macrochlamys. 

 Generative organs differ, the retractor muscle of the penis is very 

 large and given off directly at the bend of that organ ; no coiled 

 caecum ; amatorial organ long, with a rounded terminal knob. 

 Spermatophore spineless, 



Sarika eesplendens, Phil. (Plate CXI. figs. 3, 3 «; Plate CXVI. 

 figs. 2-2 h.) 



Macrochlamys resplendens, Bs. ; Godw.-Aust. Proc. Malacolog. 8oc. 

 vol. iii. p. 5, July 1899 ; Pres. Address, pp. 250 & 257. 



From the typical locality Mergui, Tenasserim. 



Referred to under Macrochlamys in Part IV. p. 109, Plate XXVI. 

 fig. 1, shell only, and Part VIII. p. 49, where the animal was 

 described, but the genitalia were not figured; this I now do in order 

 to show more clearly how far it differs from the typical Indian 

 species 71/. harclwickei. External characters, such as the shell-lobes 

 present, led me in 1898, Vol. II. p. 49, to place it in Macrochlamys. 

 The generative organs (figs. 3, 3 a), it will be seen, differ considerably ; 

 it must therefore be considered a distinct subsection forming a link 

 with some other genus. The distribution of true Macrochlamys 

 becomes circumscribed, and here in Tenasserim we appear to be near 

 the south-eastern limit of its range. Further material enables me to 

 give a more detailed description of parts of the generative organs. 

 The penis-sheath (Plate CXI. fig. 3) enlarges upwards from the 

 generative aperture to the broad, rather fiat and long retractor 

 muscle. The epiphallus is long, and where it is joined by the vas 

 deferens a kalk-sac nearly as long is given off. Within the length 

 of the epiphallus in this specimen a spermatophore was in an 

 advanced stage of development, the sac of which is indicated by the 

 swelling close to the vas deferens. The spermatheca is very long, 

 a narrow tube swelling into an elongate, pear-shaped, thin-walled 

 sac. This contained a single perfectly formed spermatophore. The 

 amatorial organ is very large and thickened, the free end terminating 

 in a very blunt globose knob (fig. 3 a). The rest of the generative 

 organs do not call for any special mention. 



The spermatophore differs in detail from any I have yet been 

 fortunate to come across [vide spermatheca, /S^)., PI. CXI. fig. 3) : the 



* A Sanscrit female name, Sari or Sdrikd, and that of the mother of Sakva's 

 chief disciple; so named because her eyes were like those of the Sarus Crane 

 (^Grus antigone). 



PAET X. E 



