DINOPLAX FOSSTJS AND CHITON CEAWFOEDI. 279 



2. Chiton Ckawfordi, n.sp. Fig. II. 



Shell elongate-oval, much, elevated, carinated. Ground-colour 

 shades of pink, reddish brown, or crimson, often mottled with lighter 

 or darker markings in blotches ; spots, almost black in tint, being 

 often present at the junction of the median and lateral areas. The 

 central areas are smooth on the jugal tract, but below are marked 

 with 12-15 conspicuous parallel lirae, only a portion of the upper ones 

 being present. The lateral areas are well raised and smooth. The 

 posterior valve has an elevated, central mucro, and the posterior 

 slope is slightly concave. The anterior valve is smooth. The interior 

 is whitish, with markings of chestnut. Anterior valve with 8, 

 median 1, and posterior valve with 9 slits ; the teeth pectinated and 

 the slits inconspicuous. Girdle solid, the scales being fairly large 

 and, under the microscope, closely striate. Length about 30, width 

 about 1 5 mm. 



Sab. — Algoa Bay (Crawford). 



I may add that a single specimen collected in Algoa Bay by Mr. 

 Crawford appears to belong to Isclinochiton {Trachyradsid) fulgetrum, 

 Eve., which Carpenter considered to be probably from South Africa, 

 and which Mr. Pilsbry has suggested may be the same as C. planatus 

 and C. dentatus, both described by Spengier, and said to be from the 

 Cape of Good Hope. 



