436 MAZATLAN UNIVALVES 



decussating transverse threads, extremely faint ; but displays 

 very slight riblets near the suture, nearly obsolete over the 

 body of the whirl. 



Hob. Mazatlan ; 2 sp. off Spondylus ; L'pool Col. 

 Tablet 2010 contains the younger specimen. 



GENUS EULIMELLA, Forbes. 



Forbes $ Hani. Br. Moll. vol. iii. p. 308. H. $ A. Ad. Gen. 



vol. i. p. 233. 

 Chemnitzia, pars, ClarJc, Moll. Mar. Ins. Brit. p. 540, &c. 



540. PEULIMELLA OBSOLETA, n. S. 



Eu. t. valde elongatd, albo-fuscd ; lirulis minimis transversis 

 infra suturam monstrantibus, basin versus obsoletis ; striulis 

 minimis transversis ornata. 



This species is named, though from an imperfect specimen, 

 as being an interesting link between Eulimella and Chemnitzia. 

 The apex is unfortunately hidden by a very beautiful, incrusta- 

 tion which covers part of the spire. It has four whirls, and 

 measures '06 by '027. 

 Hab. Mazatlan ; 1 sp. off Spondylus ; L'pool Col. 



Tablet 2011 contains the specimen. 



541. ECJLIMELLA , sp. ind. (a.) 



Tablet 2012 contains an imperfect specimen of a beautifully 

 glossy and pointed species, with a prominent sinistral apex, 

 and subplanate whirls ; of these the first six measure '057 by 

 '028. 

 Hab. Mazatlan ; 1 sp. off Spondylus ; L'pool Col. 



542. EULIMELLA , sp. ind. (b.) 



Tablet 2013 contains a specimen of normal shape, but with 

 the surface too abraded for description. It has 6 whirls, and 

 measures '082 by *038. 

 Hab. Mazatlan ; 1 sp. off Spondylus ; L'pool Col. 



