MELAMPUS. 165 



Remarks. Figure 25 of plate 75 is a fac-simile of 

 Orbigny's figure of Auricula ovula. It is a good represen- 

 tation of our Florida shells. 



West Indian specimens are well known in cabinets. I 

 know of no American specimens, with the exception of 

 the few collected by Mr. Bartlett. 



PI. 79, fig. 6, may represent a variety of this species. It 

 is from Texas. 



MELAMPUS FLORIDIANUS Shuttleworth. 

 Plate LXXV. Figure 30. 



T. imperforata, ventroso-fusiformis, tenuis, sublaevigata, griseo-fulva ; 

 fasciis castaneis varie ornata ; spira regiilariter conica, acuta ; sutura 

 linearis; anfr. 10 plani, superiores radiato-striati, ultimus f longitudinis 

 formans, superne obsolete angulatus, versus basin vald6 attenuatus ; ap- 

 ertura subverticalis, angusta, utrinque angulata ; plicfe parietales 2 minu- 

 tje, approximatfe ; plica columellaris valida, oblique ad basin producta ; 

 perist. acutum, margine dextro (in adultis) intus plicis albis transversis 

 subffiqualibus munito, columellari brevi, calloso. (Pfr.) 



SYNONYMS AND REFERENCES. 



Auricula Floridiana Shuttleworth, MSS. 



Mehmptis Fhridianus (Tralia) Adams, Proc. Zool. Soc. 1854, ii. (absq. desc.) 



Pfeiffer, Malak. Blatt. 1854; Mon. Auric. Viv. 36. 

 Tifata Floridiana Adams, Gen. Eec. Moll. ii. 245, absq. desc. 



DESCRIPTION. 



Animal not observed. 



Shell imperforate, ventricose, fusiform, thin, smooth, 

 grayish, with varying chestnut bands ; spire regularly 

 conic, acute ; suture linear ; whorls 10, flattened, the 

 upper ones radiately striate, the last comprising f of the 

 length of the shell, obsoletely angulated above, and very 

 much smaller at its base ; aperture subvertical, narrow, 

 angular ; 2 parietal plicae, one strong, one on the columel- 

 la, obliquely continued towards the base ; peristome acute, 

 its right side in adult specimens armed with transverse, 



