io8 



THE VEILED CHITON. 



length 



is two or three 



into a ball. Its common 

 inches. 



Mangerella conspicua, Cpr., Man-ger-el'-la con- 

 spik'-u-a, resembles the above, and is considered by 

 Mr. Hemphill as merely a variety of that species. 

 The mantle-border is roughened by numerous short, 

 tubular hairs. Large; southern. 



Placiphorella velata, Cpr., Pla-sif-o-rel'-la ve-la'-ta, 

 Round Chiton, is shown in Fig. 95. This singular 

 " coat-of-mail " shell is more nearly 

 circular than any of its relatives. As 

 shown in the cut, the muscular 

 mantle in which the valves are in- 

 serted is considerably prolonged at 

 one end, forming a kind of veil or 

 awning, quite different from that of 

 any other species with which I am 

 acquainted. The mantle-border and 

 the veil are set with a few stiff 

 valves are low-arched, of a dull red- 

 dish brown without, but white within. Its length is 

 an inch or an inch and a half. 



Nuttalliana scabra, Rve. , Nut-tal-li-an'-a ska'-bra, is 

 shown in Fig. 96. This species is rather common 

 and is very clearly marked. It is about 

 an inch in length and quite narrow, and 

 its eight thick, black, irregular valves are 

 partly covered by the rough mantle. When 

 the animal is removed, the inside of the 

 valves are seen to be of a greenish 

 color. 



Lepidoplearus Mertensii, Midd., Lep- 

 i-do-plu'-rus Mer-ten'-si-i, Red Chiton. 



Fig- 95- 



bristles. The 



Fig. 96. 



Brownish 



red, regular in outline, sharply arched, 



