436 MAZATLAN UNIVALVES 
decussating transverse threads, extremely faint; but displays 
very slight riblets near the suture, nearly obsolete over the 
body of the whirl. 
Hab.—Mazatlan ; 2 sp. off Spondlus; Z’pool Col. 
Tablet 2010 contains the younger specimen. 
Genus EULIMELLA, Forbes. 
Forhes & Hanl. Br. Moll. vol. iii. p. 308.—H. & A. Ad. Gen. 
vol. 1. p. 233. 
Chemnitzia, pars, Clark, Moll. Mar. Ins. Brit. p. 540, &ce. 
e 
540. PEULIMELLA OBSOLETA, %. 5. 
Ku. t. valde elongaté, albo-fusca ; 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. EuLImMELLA ————, 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. 
. $42. Evtimenta ————, 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 ‘O82 by ‘038. 
Hab.—Mazatlan ; 1 sp. off Spondylus; L’pool Col. 
