212 Transactions. 



Unfortunately, we know so little of the foot-bones of the North Island 

 species of moa — at any rate, Hutton in his account of them gives no 

 measurements, and makes no reference to the toe-bones — that it is not with 

 certainty that they can be referred to any particular species ; but from a 

 comparison of the measurements given by Mr. Wilson with the foot-bones 

 of the skeletons of Dinoniis robustus in the Otago University Museum it 

 seems probable that they were made by either D. giganfeus or D. ingens. 

 The toes of D. robustus measure from tip of middle toe to back of heel 12 in., 

 and the stretch of inner and outer toes is 15 in. ; but in the skeleton the 

 proximal phalanx is not accurately fitted to the distal end of the tarso- 

 metatarsus : the spread should be greater than this. But this is quite 

 near enough to the measurements of the print to allow us to attribute them 

 to one of the above large species of North Island moa. 



I think that the members of the Manawatu Philosophical Society are to 

 be congratulated on having so promptly had these interesting reHcs cut out 

 and preserved in their museum, so that casts can be obtained of them by 

 other museums. 



Art. XXV. — On Two New Echinoderms. 



By H. Farquhar, 



Communicated by Mr. F, G. A. Stuckey. 



[Read before the Wellington Philosophical Society, 23rd October, 1912.] 



Plates III, IV. 



A VERY handsome new asteroid was placed in my hands for identification 

 by Mr. F. G. A. Stuckey, Inspector of Schools, in September, 1911. Mr. 

 Stuckey obtained it from a fisherman, who secured it in his net while fishing 

 at Island Ba}', near Wellington. Having examined the specimen, I con- 

 cluded that it was a new and distinct species of the genus Odontaster. As, 

 however, much of the literature of Echinoderms is not accessible to me, 

 I have availed myself of the kind assistance of Dr. Herbert Lyman Clark, 

 of the Museum of Comparative Zoology at Cambridge, U.S.A., and submitted 

 to him photographs of the specimen. He has stated that he believes it to 

 be the type of a new genus, and he forwarded the photographs on to Dr. 

 Fisher. Dr. Fisher also regards the species as the type of a new genus of 

 the Odontasieridae, for which he has kindly suggested the name Eurygonias. 

 Dr. Koehler has recently established the new genus Pseudontuster in his 

 report on the Echinoderms of the Second French Antarctic Expedition, 

 having numerous small marginal plates. Accepting Dr.. Fisher's definition 

 of the genera,* a synopsis of the family may be made thus : — 



Ai. Two reciu'ved hyaline spines at each mouth-angle. 



61 . Marginals decreasing in size towards extremity of rays . . Asterodon. 

 b^. Marginals increasing in size towards extremity of rays . . Deplodontia. 



A 2. One recurved hyaline spine at each mouth- angle. 

 6*. Marginals prominent, well developed. 



C. Marginals decreasing in size towards extremity of rays Odontaster. 

 C^. Marginals increasing in size towards extremity of rays Eurygonias. 



6 2. Marginals very numerous, feebly developed . . . . Pseudontaster. 



* Bulletin U.S. National Museum, No. 76, p. 153. 



