150 TROPHON. 



T. CRASSUS, A. Ad. PI. 33, fig. 364. 



Yellowish brown, violet within the aperture. Length, 1*35 in. 



Hakodadi, Japan. 



This is an aberrant form, removed by its solidity, its usually 

 internally dentate lip, etc., from the typical Trophons. 



T. incomptus, Gould, is suspected by Mr. Adams to be the 

 same species : the description applies pretty well to the figure of 

 T. crassus, and it conies from the same locality. Gould says 

 that in young shells the laminre are quite prominent, with small 

 spines at the angles. 



T. FLINDERSI, Ads. and Angas. PL 33, fig. 357. 



Cinereous, margin of aperture purplish. Length, 1*25 inches. 



York? s Peninsula ; 8. Australia. 



Described as a Trophon-like species of Purpura ; but the 

 operculum of the figure is decidedly muricoid and not purpuroid, 

 1 therefore place it in Troplion. 



I add descriptions of two species of Purpura b} r Tenison- 

 Woods : they have not been figured, and the operculum is not 

 mentioned, but as they are compared with T. Flindersi, as pos- 

 sibly mere varieties of it, they may belong in Trophon rather 

 than in Purpura. 



P. LITTORINOIDES, Tenisoii-Woods. 



" Acuminately ovate, greenish white, spire produced, acuminate, 

 mamillate ; whorls six, angnlate and bicarinate above with trans- 

 verse rounded line (equaling the interstices in width), and can- 

 cellated with scaly imbricate lamellae ; aperture acutely ovate, 

 stained deep blackish purple within ; inner lip somewhat flattened 

 and partly enamelled, blackish purple ; outer lip slightly crenu- 



late.* Length 15 mill., diam. 8 mill. 



South Australia. 



" This shell approaches in habit the P. Flindersi of Ads. and 

 Angas, but it is much smaller and more like a Littorina, while 

 the other resembles a Trophon." 



* Since the above was written, P. littorinoides has been found at vari- 

 ous localities in Victoria. " Some specimens had a Nassa-like mouth, 

 that is, teeth on the outer lip." 



