MELANTIIO. 



35 



Fig. 67. 



formed immediately over the lower row of tubercles, tliey cause its line to 

 be very irregular ; aud this row itself is hidden on the upper whirls. {Lea.) 



Paludlna angulata, Lea — Shell inflated, thin, brown, above somewhat 

 varicose, below transversely and minutely striate, minutely perforate ; 

 spire rather short, dark at the apes ; sutures Impressed ; 

 whirls five, angular in the middle ; aperture large, sub- 

 triangular, within subrubiginous. 



Coosa River, Alabama. Dr. Brumby. My cabinet, and 

 cabinets of Dr. Griflith, Dr. Jay, Dr. Foreman, T. G. Lea, 

 and J. Clark. Diam. .80, length 1.05 inch. 



This is a very distinct species, being more angular than 

 any I have seen. In the specimen before me, there are 

 three irregular transverse impressions, two above the an- 

 gle, and one immediately below. The strias are more dis- 

 tinct on the lower half of the whirl. The first three whirls are very dark. 

 The aperture is nearly one-half the length of the shell, and quite angular 

 at the base. 



Since the above was written, I have received more mature and perfect 

 specimens. They differ from the one described in being darker in the epi- 

 dermis, and in having four purple broad bands, which are very distinct 

 within the aperture. In these specimens, there is a series of indistinct 

 tubercles above the periphery of the last whirl. {Lea.) 



Pdludina iinfj^i- 

 lat,i. 



Fig. 68. 



Melantho decisa (female). 



MEIiANTHO, BowDiTCH. 



Foot large, rather thin, broad, much 

 produced beyond the snout, and slightly 

 auricled in front. Colors rather light, in 

 reddish spots on a palish white ground. 

 Head of mode- 

 rate size. Snout '^* 

 small. Lingual j^^^^}j' 

 teeth smooth, or r^^/ 



only very mi- Lingual dentition of M. integra. 



