[OTA, I' 1 -' 



somewhat resembl< '/<i /inea/o Wood (><< p. H', pi. 11. 



(8), lull dilli-rs sufficiently in sculpture and tli- OH <>f 



black eye-pits, as well as in tin- entirely diilJ-mit insertion-p 



/'. * nihles /uii'n/tifii in color-pattern, lnt it dilfer- 



entirely in having the entire central areas Inngit udinally, and the 

 latei-il areas and end valves radially c-ostuhite. 



T. i AMI..IM v (.r;iv Sowe.-l.y. PI. 41, fig. 21 ; pi. 4L>, figs. 36, 



37, 38, 



Shell oblong, moderately elevated, subcarinated ; the side-slopes 

 nearly straight; surface sinoothisli. Color olive-brown, sometimes 

 whitish, Inirl IK/ imli^lnd concentric dur/a r xtre'tk* ; rarely unicolored 

 black-brown. 



/ teral urea* hai-dlij raised, indistinctly separated from the central 

 areas by a smooth, low or obsolete diagonal ridge. Entire surface 

 of lateral and central areat covered with a microscopic granulation, 

 the granules sometimes coalescing into short wrinkles in front of the 

 diagonal at the sides. 7)o/W ridyr Imvlmj a i'cnj narrow .-niootk 

 band in the middle, on each *ide of whic.lt fhrre are several deeply 

 engraved longitudinal <froov<'.-<. Second valve either smooth or 

 having a group of striie in the middle. End valves showing numer- 

 ous rays of eyes ; the mucro of the posterior valve prominent, in 

 front of the middle. 



Interior white, marked under the apex or suffused throughout the 

 jugal tract with reddish. Sinus toothed. Anterior valve having 7, 

 central 1, posterior valve 10 slits; teeth rather thin, crenulated out- 

 side and at the edge. 



Girdle leathery, nude, dark brown. 



Length 54, breadth 'U mill. ; divergence 110. 



Length 48, breadth 26 mill.; divergence 110. 



. of Mut/t linn. 



C.fagtigiatui GRAY, inSowB., Conchol. I llustr., t'. 11, 35. REI 

 Conch. Icon., f. 26. SMITH, P. Z. S. 1881, p. 35. 



ohiloensi* Sown., }>. Z. S. ls:v_>, p. 58; Conch. 111. (assyn. 

 of elegant), f. 18*, 10, 29, 30. RKEVK, Conch. Icon., t. 3, f. 14. 



The main distinguishing characters of this species are its even fine 

 granulation, lack of tubercles on the low diagonal ridge, few 

 engraved grooves on each side of the smooth narrow dorsal baud, 

 and the obscure concentrically streaked style of coloration. 



