BNOCHTP 117 



[. COMPTUS < "Mild. 



Shell small, thin, cllipt ical ; Lrn-.-n ,,r ~r;iH, t. Ci ..|u-nt 1 y 

 (l(ittc<l or maculated with \\hiti-h or yellow. Valves -ln.rt, tic 

 valves radiatcly riblx-d and punctate; central area! qtllDI 



punctate. Lateral areas elevated and sculptim d \\ith I 



ting grooves. Interior given, (iirdle narrow, imhrie;it.-d with 

 small elongate*! grooved scales. Length 1 .">, diani. 10 mill. < Old.) 

 Ootinut, J'l/xtn ; llnn'm uml /,/'//- A'/// /x. /Slim;,. 



C. (Leptoehiton) wnn/itn* (<>I:M>, I'roc. Host. Soc. N. II. vii, p. 

 163; Otia, p. 117. hch. <'<nn/>fn CJPB., J/\ 



Carjientcr writes: Entire surface punctate; central areas having 

 the lines of points either parallel or bending toward the acute 

 juguni ; lateral areas having small radiating \vrinkl<-s, at fii-t :i \<> \ 

 in number, then splitting into 6 to 8. End valvo havin-j- in deli- 

 cate, hardly apparent radiating wrinkles. Mucro slightly in front 

 of the middle, slightly elevated. Interior: posterior valve with 

 13, central valve 1, anterior valve 14 slits; teeth acute; 

 moderate, acute; sinus wide, flat. Girdle having large, solid 

 imbricating scales, sometimes very slightly striated. Length 1 7 , 

 breadth 10 mill.; divergence 120. Philippines, Mus. Cumin_ 

 11. Dr. Gould strangely placed this species in Leptochiton. 

 although the scales are as large, solid and regular as in Chiton. 

 The above diagnosis is written from Mr. Cuming's beautiful speci- 

 mens, which are broad and externally curiously like the vein 

 Chiton (var.) patulus. In the typical specimens, the striulation of 

 the scales can seldom be seen, having apparently lived in ex; 

 situations. The variation in color is extraordinary, being (a) 

 densely clouded with olive; (6) light ditto mottled with dark and 

 lilac; (f) four central valves chestnut, the rest olivaceous; (d) 

 brown with olive, with broad white streak down the centre ; (e) 

 light reddish-chestnut mottled ; (/) ditto, shading into oli 

 (0r) sixth, seventh and part of eighth valve dark olive-brown. 

 rest light ashy; (//) the whole light ash. The sutures are alwaya 

 regularly spotted, as in T. jtseudodentiens. In the typical specimen 

 examined there were only eleven slits in the terminal val\ 



I. LEPIDUS Gould. Unfyured. 



Shell small, elliptical, roof-shaped, yellow-irreeii >tn-akrd with 

 olive; front valve semi-circular, radially striated; posterior valve 

 crescentric, beaked, radially grooved behind and longitudinally in 



