﻿Oreaster austraiis Ltk. Dorsum altum; brachia angusta, 



tessellæ marginales c. 21; dorsales angulorum a margine paulum 

 remolæ; tubercula minuta singula in lessellis marginit venira 

 plerumque adsunt, in marginalibus dorsi angulorum vero perpt 

 brachiorum crebriora; in tessellis dorsalibus proprus pkrumqm 

 sunt, regularitet disposita, series quinas in brachiis formantia, n 

 tuberculis c. 13- 14 majoribus gaudente; intimum serie i c\ 

 cunque omnium maximum ; areæ poriferæ confluentes, poris 

 merosissimis ; tessellæ ventrales propriæ granulatione obtectæ , haud 

 conspicuæ, granula minuta pedicellariasque numerosissimas lineares 



ternæ (rarius qualernæ) ; papillæ orales ori proximæ series singulas 

 (non ut fieri solet duplices) formant. Hab. ad oras Australiæ 

 (Novæ Hollandiæ). 



Oreaster Hedemanni Ltk. Dorsum sat altum, brachia 

 tnangularia, mediocria, acuta; radius stellæ major minorem duplum 

 et dimidium æquat; tessellæ marginales utrinque c. 15, dorsales 

 ventralibus magnitudine æquales, parte externa brachiorum forsan 

 excepta haud alternantes et in peripheria stellæ formanda æqua- 

 Uter participes; nonnullæ (dorsales sc. 5, ventrales 5 6, ad 

 angulos stellæ sitæ, nec non 1 vel 2 versus apices brachiorum lo- 

 cum tenentes) tubercula minuta gerunt; areæ poriferæ regulares, 

 sejunctæ, poris numero mediocri, juxta tessellas marginales 

 maximæ; tubercula dorsualia quinque sat magna apice nuda, 

 spatiis diametros basales æquantibus inter se separåta, tuberculum 



similium 7—9, versus apices brachiorum decrescentium , carinas 

 brachiorum coronat; minora 1-3 in lateribus brachiorum series 

 duplices utrinque formant; ad angulos stellæ vulgo nulla; tessellæ 

 ventrales j)ropriæ sat magnæ, sejunctæ, granula majuscula, 

 tuberculis haud intermixta, gerunt; pediceltariæ lineares elongatæ in 

 'orsualibus tuberculis destitutis, 

 papillæ ambulacraks internæ 7, externæ 2 (rarius 



