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 Tro^ltnnx. 



T. incomptaSj 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 laminae are quite prominent, with small 

 spines at the angles. 



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



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



York's Peninsula ; S. Australia. 



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

 operculum of the figure is decidedly nuiricoid and not purpuroid, 

 I therefore place it in Trophon. 



I add descriptions of two species of Purpura by 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. 



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

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

 verse rounded lirai (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 slightty orenu- 



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



South Australia. 



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

 Aiigas, but it is much smaller and more like a Littoriua. while 

 the other resembles a Trophon." 



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

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

 that is, teeth on the outer lip/' 



