260 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Range. Puget Sound to Magdalena Bay, and Socorro Islands, Lower 
California. 
Described as Chiton dent tens. 
Lepidochitona flectens Carpenter, 1864 
Supplementary Report, British Association for the Advancement of Science, 649. 
Proceedings, Philadelphia Academy of Natural Sciences, 60:1865. Tryon and 
Pilsbry, Manual of Conchology, 14:75 and 15:64; PI. 15, figs. 34-37. 
Mantle-margin scarcely granular. Rosy, very small, scarcely sculp¬ 
tured : valves beaked and waved as in M. simpsonii: eaves and incisors nor¬ 
mal. (Carpenter.) 
I. t. parva, subelongata, rosea, elevata; jugo acuto; areis lateralibus vix 
definitis; marginibus valvarum excurvatis, suturis incurvatis, apicibus 
valde prominentibus; valvis granulis minutis, baud crebris, subradiatim 
sparsis, ominoque minutissime punctulatis; mucrone conspicuo, antico; 
intus, sinu suturali lato, planato; subgrundis haud porrectis; laminis latera¬ 
libus uno-terminalibus quod xi.-fissatis: limbo palii vix minutissime granu- 
lato. Long., .35; lat., .24; div., 110°. (Carpenter.) 
Shell small, subelongate, roseate; jugum acute; lateral areas scarcely 
defined. Valve margins excurved, suture incurved, apices very prominent; 
valves having minute, not very close granules sparsely subradiating, all 
over very minutely punctulate. Mucro scarcely projecting. Terminal 
valves with 11, median 1 slit. Girdles very minutely granulate. Length, 
8$4; breadth, 6 mm.; div., 110°. (Carpenter.) (Tryon and Pilsbry, 
Manual of Conchology.) 
Type in United States National Museum. Type locality, Puget Sound. 
Range. Vancouver Island, B.C., to San Diego, California. 
Described as Trachydermon flectens Carpenter. 
SECTION CYANOPLAX Pilsbry, 1892 
Lepidochitona hartwegii Carpenter, 1855 
Proceedings , Zoological Society of London, 231. Tryon and Pilsbry, Manual of Con¬ 
chology, 14:45; PI. 14, figs. 81-85. 
C. t. ovata, subelevata (ad angulum 125°), sublaevi; olivacea, macula 
migra in utroque jugi latere picta; valvis sine lineis diagonalibus, partim 
detritis, lineis incrementi conspicuis, tota superficie minutissime irregu- 
lariter subgranulosis; marginibus rotundatis, suturis magnis; limbo tenui, 
granulis minimis, confertissimis, irregulariter munito; intus valvarum 
marginibus arcuatis, lobis prominentibus, sinu late, haud alto; ad jugum 
vix impressus. (Carpenter.) 
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