collected at Cape St, Lucas, 7 



tata; peritremate pene coiitinuo, acuto. Long. •!, long. spir. 'Oj, 

 lat. -07 poll., div. 70°. 

 Variat interdum rugulis incrementi ornata. 



20. Eucosmia {1 varier/ata, var.) suhsiriata. 



E. testa E. variegata simillima, sed anfr. circa basin et supra spirara 

 (nisi in anfr. nucl. Isevibus), interdum tota superficie tenuiter et 

 crebre striatis j striis ant'r. penult, circ. x. 



21. Eucosmia punctata. 



E. testa E. variegatcB simili, sed multo niajore, miilto magis elon- 

 gata, angustiore, Phasiauelloidea ; plerunique fusco creberrime 

 punctata ; umbilico parvo. Long. '22, long. spir. "11, lat. • 1 5 poll., 

 div. 50°. 



22. Eucosmia cyclustoma, 



E. testa parva, valde obtusa, lata, regulari, valvatoldea ; marginibus 

 spirae vix excurvatis ; pallida cinerea, fiHco-olivaoco dense punc- 

 tata seu maculata ; anfr. nucleosis paliidis, mauiillatis ; nonnali- 

 bus iii., valde tumentibus, suturis valde impressis; apertura vix a 

 pariete indentata ; umbilico magno, subspirali. Long. "05, long, 

 spir. -02.5, lat. -05 poll., div. 90". 



Curiously like a small depressed Valvata obtusa, but with the 

 texture of Phasianella, 



Genus Haplocochlias*. 



Testa Colloninm simulans, sed baud margaritacea : apertura circu- 

 laris, varicosa : columella baud callosa. 



The animal and operculuia are unknown. Its affinities may 

 be with Ethalia. 



23. Haplocochlias cyclophoreus. 



//. testa compacta, parva, solidiore ; albida, seu pallide aurantlaca; 

 anfr. v., rapide augentibus, suturis impres.<is ; tota superficie mi- 

 nutissime spiraliter striolata, nitida ; a})crtara rotnndata ; peri- 

 tremate continuo, incrassato, extus varicoso ; labio distincto ; axi 

 t. jun. umbUicata, adultse lacunata. Long. "I 'J, long. spir. "06, 

 lat. -2 poll., div. 100°. 



When laid on its base, this shell resembles Ilclicina ; but the 

 mouth is more like Cijclophorus. The young shell is semi- 

 transparent, and resembles a Vitrinella with thickened lip. 



24. Narica aperta. 



N. testa parva, inflata, tenui, alba; anfr. nucl. ?....; norm, rapide 

 augentibus, lirulis crebris s]»iralibus, in spira hie et illic majori- 

 bus, a striolis creberrimis radiantibus minutissime decussatis •, 

 euiuris valde impressis ; apertura subcirculari ; umbilico maximu, 



* Til. aTtkovi, unadorned ; (co;^Xi'ar, snail. 



215 



