104 POLYPLACOPHORA. 



This species and the next four probably belong to the restricted 

 genus Chiton. 



CHITON MULTIMACULATUS Blainv. Body oval, but little elon- 

 gated, the girdle very narrow and finely scaly. Shell large, having 

 8 narrow valves. Median areas of the 6 intermediate valves smooth 

 or having growth-lines only. Lateral areas with 6-8 granulous rays. 

 End valves with the rays less granulous, straight and diverging from 

 summit to circumference. Anterior insertion-plate divided into 15 

 teeth ; the posterior into 11 ; all pectinated. Color of the shell green 

 within, and agreeably varied with interrupted lines of a black-violet 

 on a gray ground outside. Three black spots on the posterior mar- 

 gin of the lateral areas. (Blainv. in Diet. Sc. Nat., p. 540). 



Port of King George, Australia. 



CHITON CLYPEUS Blainv. Shell short, oval, swollen ; the lateral 

 areas and end valves rayed from summit to circumference. Median 

 areas nearly channelled longitudinally. General color greenish- 

 brown, with small circular spots of aqua-marine or varied with yellow 

 or greenish lunules. (Blainv. 1. c., p. 540). 



New Holland. 



CHITON TESTUDINARIUS Blainv. Body oval, swollen, convex, 

 little or not carinated. Girdle covered with very small scales. 

 Shell large, quite smooth and shining. End valves radiated above 

 and especially below by grooves. Plate of insertion divided into 12 

 strongly pectinated teeth. Lateral areas of the intermediate valves 

 indicated only by a slight carina, a little marked with lines of 

 growth. General color greenish, with spots of darker at the border 5 

 the shell tortoise-shell brown, varied with some lighter spots. (Blv., 

 Diet. Sc. Nat. xxxvi, p. 540). 



Habitat unknown, bid probably Australia. 



CHITON ELEGANS Blainv. Shell oval, of the same form as the 

 preceding species, but more carinated ; composed of 8 valves of nearly 

 the same proportions ; but the strongly elevated lateral areas are 

 smooth as the median area ; the end valves equally smooth. Color 

 varied with red, black and dull white above, greenish-white within. 

 (Blainv. , Diet. Sc. Nat. xxxvi, p. 540). 



New Holland. 



This may very likely be Chiton tulipa Q. & G., a South African 

 species. It may be mentioned in this connection that Angas has 



