from the Philippine Islands. 349 



are the most noticeable features of this little species. It is 

 about the same size as L. lucidelldj Pfr., but differs from it 

 in having the boily-whorl narrower, the columella less reflexed 

 over the perforation, and the suture narrowly margined with 

 white. 



3. J'rochonanina paraguensis. (PI. XVIII. figs. 7-9.) 



Testa imporforata, dcprcsse conoidea, acute carinata, unicolor, 

 cornea, vol iiiterdum utrinque carinam anguste fusco zonata ; 

 anfractus 7-8, superne vix couvexiusculi, lento et regulariter 

 crcscentes, incrementi lineis oblic[ue arcuatis striisque spiralibus 

 paucis sculpti, ultimus hand descendens, acute carinatus, infra 

 convexus, baud spiraliter striatus ; carina supra et infra vix com- 

 pressa ; apertura ajigusta ; peristoma album, magnum, margine 

 supero leviter incrassato et subexpanso, basali fortius iucrassato. 



Diam. maj. 18J millim., min. 17 ; alt. 8. 



Hah. Palawan. 



This species is closely allied to T. labuanensis, Pfeiffer. It 

 may be distinguished by the spire being rather less elevated, 

 the keel not so acute and not compressed above or below; the 

 umbilical region is not so impressed, and the peristome, espe- 

 cially the basal margin, is distinctly thickened. This species 

 is much more distinct from T. labuanensis than the latjer is 

 from T. conicoides^ Metcalfe, which indeed are considered 

 synonymous by Godwin-Austen. T. conicoideSj however, 

 has a more elevated and conical spire than labuanensis, and 

 the coil of the whorls is different, so that in tiie latter the last 

 whorl seen from above is conspicuously narrower than in 

 conicoides. 



T. ST/Ivanuj Dohrn and Semper, has a higher spire than 

 paragiiensis, a sharper and more compressed keel, and has not 

 the basal lip of the aperture thickened. It is all but identical 

 with labuanensis. 



4. Trochomorpha Afetcalfei, Pfr. 



Hab. Palawan {Hidalgo , Evereit). 



This species is very variable and is met with on several of 

 the islands of the Philippine group. With Hidalgo {I. c. 

 p. 112) I agree in considering T. boholensis of Semper as a 

 variety. 



0. Hemiplecta densa, var. 



The variety of this species from Palawan, namely that 

 described by Pfeifler as Ilcli.v Schu/nacheriana, has already 



