163 



Long. 0,22 poll. (5i/ 2 mm.), lat. 0,05 poll. (Ad.). 



Hab. Jaraaica C. B. Ad. „described from two mise- 

 rable specimens" (Krebs remarks 1866. p. 395 *). St. Tho- 

 mas (Krebs, Riise). 



71. var.? Chemnitzia obeliscus C. B. Adams 

 Contr. p. 72. 



T. costis 26 — 30 prominentibus, abruptis ad basin; in 

 interstitiis costarum lineis confertissimis spiralibus; paululum 

 superne ad mediam anfr. linea lata depressa laevis etiam 

 in media et antica parte anfr. ult. Long. 0,25 poll., lat. 

 0,05 poll. (6 mm.). 



Hab. Jamaica C. B. Adams, St. Thomas (Riise). 



„Described from three pieces of different and very 

 imperfect individuals". Krebs remarks 1866. p. 395. 



Sect. 2. T. colorata; costae ad basin obsoletae. 



72. Chemnitzia subulata C. B. Adams 1. c. p. 73. 

 T. alba vel pallide brunnea fasciis spiralibus pallide 



cereis et tertia antice; costae 28 — 30 graciles non omnino 

 obsoletae ad basin; lineae spirales in interstitiis costarum 

 numerosis et subtilissimis, confertissimis quarum suturali 

 latior. 



Long. 0,17 poll. (3V 2 mm), lat. 0,045 poll. (Ad.) 

 Hab. Jamaica (Adams), St. Thomas (Riise, Krebs, 

 Swift) vulgaris. 



Subg. Mumiola A. Adams? 



73. Chemnitzia flavocincta C. B. Ad. Contr. p. 74. 

 T. subelongata, alba fascia lata flavo-brunnea ad su- 



turam costis 28 circiter, bene rotundatis subangulatis, in 

 antica parte obsoletis, striis spiralibus interstitialibus mi- 



*) I suppose the collections of Prof. Adams where desarranged when 

 Mr. Krebs made the quoted notes. Annais Lyceum of New-York. VIII. 

 p. 391 



11* 



