16 LEPIDOPLEUBU8, 



In -culpture tliis sp -trikinirly different from the other 



and in fact from all other Chitons. The lateral areas 



ami front \:il , -1, the latter being compared by 



ater to a circular flight <f nmndcd >irps. 



The Atlantic >p, cinieii^ arc always larger than those from the 

 . the measurement* Jird given above being taken from 

 an Ocean example, the second measurements from an Italian speci- 

 men. 



It i- the i llisso's genii- Lepidopleurui. 



;ion Deshayesiff/'t Carpenter, 1878. 



Deshayesiei/'i CAKI-IMKR mss., p. 10. DALL, Proc. I . S. Nat. 

 ;.. :I14; l.<: 1882, p. 286. HADDON, 'Challenger' 

 IV.lyplacophora, p. 9. 



Shdl ehm-ated: valves curved, somewhat beaked; umbo flat- 

 tened: m> insertion plates ; sutural plates, triangular ; girdle spicu- 

 lose. 



Ditli-i> from L<i>tochiton not only in its hairy girdle but al>o in 

 ':itt-m-d iimlio and its valves, which are somewhat thrown for- 

 um d, forming a decided transition toward some of the palaeozoic 

 forms. 



L. . i KV kTOH Carpenter, n. sp. PL 4, figs. 78,79, 80, 81. 



Shell rather elongated, whitish-ashen, planate ; dorsal ridge 

 rounded ; umho central, flat; valves with pointed apices, all curved ; 

 the interior .if the posterior part of each valve much scooped out. 

 Jugal area broadly V-shaped, </m/x/ reticulated, the lines of pus- 

 tules parallel in the middle, diverging at the sides, interstices pnnc- 

 ( 'ei.tral areas with longitudinal distant, beaded lines, 8 to 10 

 ach side, tt -ndinu r toward the juguin forward, interstices decus- 

 al areas somewhat swollen, expanded, but scarcely 

 d by a line from the central areas; coarsely, irregularly gran- 

 oee, and concentrically waved. 



lu-ide: insertion plates absent, the position of them flat: sinus 

 l.r-.a.l. t'..llwiiiL r the curvature of the valve. 



<iirdlr delicate, clothed with small scattered spines, occasionally 

 larger, and chafi'y lealat. (Cjpr.) 



Length 1 1, l.readtl. 15.1 mill.; div. 120. 



./'tjnin (A. Adams). 



