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" Localities. — Port Jackson, Australia. Daptli 2 t > 11 fathoms, 6 to 15 

 fathoms. 



"Admiralty Islands. Dei)tli 16 to 25 fatlioms. 



"Yokohama, Ja^mn. Depth 6 to 25 fathoms. 



" Kobe, Japan. Depth 8 to 50 fathoms. 



" Hong-Kong. Beach. 



" Remarls. — The examples from the Admiralty Islands are remarkable 

 for the robustness and size of the large spines on both the supero-marginal 

 and infero-marginal plates. This is espacially conspicuous in one example 

 in wliich the lateral spines are unusually broad and flattened, the breadth 

 being maintained imtil near the tip, when it abruptly forms a broad lancet- 

 like point. The same example is also noteworthy from the fact that each 

 supero-marginal plate is armed with a spine ; whereas another di-edged at 

 the same time follows the usual rule in this species in having the second, or 

 second and tliird, supero-marginal plates on each side of the median inter- 

 radial line unarmed. These points are very interesting, but I scarcely feel 

 justified in giving a name to the variety on the strength of the material at 

 command. This com'se, however, may perhaps be found desirable in the 

 futm'e, when more examples from this locality are available for study. 



" There is a small Astropeden also from the Admiralty Islands, which, 

 from having been dredged in association with the above-mentioned speci- 

 mens, might not um^easonably be looked upon as the yoimg phase of this 

 species. I consider, however, that it is distinct, and should be referred to 

 Astropeden veliiaris, von Martens. The example in question, which has a 

 major radial measm-ement of 11 mm., and sixteen supero-marginal plates, has 

 only the two innermost plates in each interbrachial arc armed with spines, 

 no trace of their presence being found on any of the others. This view is 

 strengthened by the fact that in young examples of As'rqpeden pohjacanthus 

 from Port Jackson of even smaller size than this, the supero-marginal plates 

 are characteristically and powerfully armed ; and the characters of the 

 paxillsB and of the spinulation of the infero-marginal plates are also different. 



"The type-specimen of Müller and Troschel's Astropeden vappa in 

 the Berlin Museum is quite a young form and in bad condition. After the 



