Islands of Belay ar^ Jampea^ and Kalao. 151 



Helicina exserta, Martens. 



Helicina exserta, Martens, in Max Weber's Zool. Ergeb. vol. ii. p. 220, 

 pi. xii. figs. 16-19. 



Hah. Selayar. 



Many of the specimens have agglutinated earth attached. 



Var. major. 



Shell red or yellow, larger than type, with the whorls but 

 very slightly exserted and the carination at the periphery 

 finer. 



Hah. Selayar. 



Var. solidior. 



Shell red or yellow, same size as type, but with less ex- 

 serted whorls ; as strongly keeled at the periphery ; spire 

 stouter and less concavely elevated ; peristome thicker, body- 

 whorl more strongly impressed above and below the keel. 



Hah. Kalao. 



Some specimens from Jampea are like the latter variety as 

 regards size and form, but they more resemble the var. major 

 as regards the keel, which is finer and less defined below by 

 a depression. 



Helicina halaoensis, (PI. X. figs. 14, 14 a.) 



Testa parva, orbiculari-conica, spiraliter lirata, rufa, albo maculata 

 et Hammulata; aufractus 4-5, convexiuscuh, apicalis Isevis, 

 ultimus obtuse carinatus, liris tenuibus spiralibus 4-6 supra 

 medium, infra 7-8 ornatus ; apertura obliqua, semilunata ; peri- 

 stoma intus carneum, extus pallidum, valde incrassatum, sub- 

 duplex ; callus basalis in medio rufescens. 



Diam. maj. 6 millim., min. 5, alt. 3^^. 



Var. Testa olivacea, vel flavescens albo maculata et flaramulata. 



Hah. Kalao Island. 



This species is well characterized by its very strong thick- 

 ened lip and the spiral ridging. 



EXPLANATION OF PLATE X. 



Fiys. 1, 1 rt. Microcystina consueta. 



Fiys. 2-2 b. Xestafulvizcma. 



Fig. 3. Xesta seJayarensis. 



Fig. 4. Xesta kalaoensis. 



Figs. 6-5 h. Trochomorphajampeana. 



