122 COLLECTIONS EKOM MELASTESIA. 



and that the last-named naturalists were followed hy Dujardin and 

 Hupe. I am led to make these remarks from the fact that through- 

 out the ' Kevision of the Echini ' the mode of spelKng which is hoth 

 etymologicaUy and historicallv incorrect is not only adopted, but is 

 ascrihed to Valenciennes, to Lutken, and to YerriU, and is, cunously 

 enough, carried on into the lately published Eeport on the lichi- 

 noidea collected by the ' Challenger ' Expedition. 

 Port Jackson. 



13. EcMnometra lucunter. 



A. Agassie, Bev. JEch. p. 431. 



Port MoUe (beach) ; Levuka, Eiji. 



14. Fibularia volva. 

 A. Agagmz, Rev. Ech. p. 509. 

 Prince of Wales Channel. 



15. Clypeaster humilis. 

 A. Agasm, Mev. Mch. p. 510. 



Port Molle (4 fms.). 



16. Lagannm depressum. 



A. Agassiz, Rev. Ech. p. 518. 



• Torres Straits ; Prince of Wales Channel. 



The British Museum contains specimens collected by HJI.S. 

 ' Challenger ' in the Arafura Sea. 



17. Laganiun decagouale. 



Peronella decagonalis, A. Agassis,. Rev. Ech. p. 520. 

 Laganum decagonale, Bell, Ann. 8f Mag. N. S. (5) xi. p. 130. 



The investigations which I have been able to make into the value 

 of the generic and specific characters of the Laganidae (Ann. & Mag. 

 Nat. Hist. (5) xi. p. 130) have led me to the conclusion that no 

 valid grounds exist for the generic or subgenerio separation of 

 " Peronella " from Laganum. 



Prince of Wales Channel ; Thursday Island. 



This appears to be one of those species around which misappre- 

 hensions have collected ; the earlier and not ungraceful method of 

 registration which induced De BlainviUe* to associate with this 

 species the name of the naturalist to whom he owed his specimen 

 has, no doubt in haste, been regarded by Professor Alexander 

 Agassiz t as indicating Lesson to be the author of the species. 



» Diet. Sci. Nat. vol. xlviii. p. 229; Man. d'Aot. p. 215. 

 t Bev. !Ecli. p. 47, and much lees accurately on p. 148. 



