10 LEPIDOPLEURU8. 



of the total length of the body, the proportion with regard to the 



n <>t* the foot is 1 : 4.5. Tin -y are of moderate size, the middle 



being the largest, slightly decreasing behind but much more so in 



L. n i i '.IN \rt\s Adams <fc Reeve. PI. 4, fig. 88. 



Shell elongate, elevated, whitish, tawny-ashen sometimes soiled ; 

 apices * T..I| (! ; juirum rounded. Mucro moderately elevated, posterior 

 slope very concave ; jugal area hardly defined ; central area hardly 

 sculptured ; lateral areas quite elevated, frequently sculptured with 

 irregular concentric incremental wrinkles ; jugal sinus wide and 

 .-traiirht. < n'rdle narrow, very thin, thickly covered with very deli- 

 cate small and fugacious scales, which are somewhat elongated and 

 purpli>h. (CJpr.) Length 20, breadth 9} mill. ; divergence 90. 



Korea. 



( '1,,'tw, fH/if/htntu* AD. & RVE., Conch. Icon. t. 26, f. 174, 1847. 

 Lept<><-Itit)i fnflf/inatus A. & R., CPR. ms. p. 4, 5. DALL, Proc. U. 

 t. MIIS. 1878, p. 318, 316. 



This specimen is an approach to Stenoplax in its outward form 

 and the character of its girdle covering. The scales appear smooth, 

 ami have the shape of those of Stenoplax. It has a curious general 

 resemblance to Trachydermon albus, but the absence of insertion 

 plat*-- at once distinguishes it. The concentric furbelowing at the 

 sides i> variable. (Qor. from B. M. specimens.) 



See remarks under L. cancellatus for further distinguishing char- 

 acters of tli is species. 



I.. \ni. 1.1 - K ve. PI. 4, fig. 87. 



Shell ovate, attenuated anteriorly; terminal valves and lateral 

 areas of the rest concentrically ridged, radiated with minute gran- 

 uli-s central areas very finely grooved and cancellated, whitish, liga- 

 ment horny, arenaceous (Reeve.) 



Habitat unknown. 



C. catillus Rv. Conch. Icon. t. 23, f. 159, lS47.Leptochiton 



... CPB, .UN. p. ii. 



Miu'ht e;i>ily IK- taken for *trnmtnens Sby. outside. Coarsely 



granose-1 irate, like the Mogador specimen [L. granoliratus] ; girdle 



gravelly. The sculpture consists of longitudinal granose lira 1 upon 



ami radiating gltmofe lira- upon the lateral areas. 



No insertion plates, but the line of them is rugose. Length 9*, 



rgeooe 110. Jugum rounded. (Q?r.) 



