Asteriidai from Karguelen s Island. 109 



nata ; margines ventrales laterales spinis brevibus comprcssis ad 

 apices truncatis,unasupraquamque tes.scllam(qufe sulci slineari bus 

 notatae) laciniati ; spinae arabiilacrales biseriatae ; exteriores in- 

 teriorum longitudinem diiplam tequantes, lata), ad apices quadrate 

 truacatae, extra sulco parvo, aspectum ipsis duplicem prtEbentc, 

 insculptfe ; spinae interiores exterioribiis porro longc brevioies, 

 multo quoque graciliores ; tessella madreporifonuis rotundato- 

 ovalis, paiilo propius a centro quam a raargine sita ; anus centralis, 

 papillis spinaeformibus circiter 12 bre\'issimis circumdatus. Color 

 carneus vel sanguineus. 

 Diam. maxim. 90 millim., minim. 48. 



This species is rather closely related to the northern Porania 

 pulviUus of Miiller. From this, however, it may be distinguished 

 by the different number and character of the marginal s]jines ; 

 and also the ambulacral spines offer some distinctions : P. pul- 

 viUus has three or four spines on each of the marginal plates ; 

 and these are much smaller than the single one found in the 

 present species. The furrow on the exterior of the outer ambu- 

 lacral spines exists chiefly in the skin which clothes them. 

 The minute tubercles on the back do not display any regular 

 arrangement ; there are about a dozen on the central portion 

 of the disk, and a few on the short conical arms. 



Astrogonium meridionale, sp. nov. 



Discus 5-radiatus, latitudiae radiorum longitudinis i adaequans, de- 

 pressus, superne infraque leviter convexus ; radii ad basim lati, 

 versus apicem aliquanto rapide attcnuati ; spinae ambulacrales 

 quadriseriatae, intimis ad apices quam basi latioribus, quadrateque 

 truncatis, caeteris longitudinis aequalis, siraplicibus, cylindricis, ad 

 apices rotundatis ; anguli oris interradiales spina unica crassa 

 conica, et earn infra lacinia spinarum 6-8parvarumintus directarum 

 muniti ; radiorum et disci superficies inferior fasciculis spinarum 

 brevium aliquanto acuminatarum ornata, fasciculis in smebus 

 a sulcis ambulacralibus usque ad margines radiantibus ; latera 

 scriebus duabus angustis spinarum in fasciculos parvos quadrates 

 confertos dispositarum (20 supra radium) raarginata ; spiiia3 

 serici inferioris iis superficiei inferioris similes, seriei superioris 

 iis dorsi ; superficies dorsalis fasciculis numerosissimis fere cou- 

 tiguis spinarum circiter 1 0-20 munita, spinis tubercnlaribus, ob- 

 tusis, pedunculatis ; interstitia inter spinarum fasciculos supra et 

 infra nuda, pedicellarias numerosas raagnas gercntia ; radii tuber- 

 culo unico magno superne terminati ; tessella madrcporiforrais 

 eircularis, prope medium inter centrum et margiucm lateralem 

 sita ; anus subcentralis. 



Disci diam. 24 millim., crass. 10 ; radiorum longit. 29. 



This s])ecies Ixilongs to tliat .section of Asfroijanlion wliich 

 includes A. pa.rillosnin as described by CJray, Proc. Zool. Soc. 

 1847, p. 70, l)ut it is not so llaf cither above or beneath. 



