Bd VI: 4) THE ECHINOIDEA. 99 



This interesting species was taken by the Swedish South Polar Expedition at 

 Station 17 (S3°34' S. 43°23' \V. 160 m., Shag Rock Bank), 2 fullgrown female spe- 

 cimens and 3 young specimens, and Station 22 (5417' S. 3628' VV. 75 m.. South 

 Georgia), 4 fullgrown male specimens and one young specimen. 



KoEHLER, in discussing the relations of the genus Atiiphiptieustes, comes to the 

 result that it is nearest related to Palccopneustcs. It certainly must be conceded 

 that A. Lorioli has a very great resemblance to Palœopneustes cristatus A. Ac. 

 On the other hand, the new species of Amphipneitsles here described shows beyond 

 doubt many relations to Abatits, with which genus it agrees in every essential re- 

 spect, except in the lack of fascioles. It would thus seem that Aniphipneustes 

 forms a connecting link between the genera Pahcopiuiistcs and Abatits. However, 

 the affinity seems to be more towards Ahatus. It is a noteworthy fact that the 

 pedicellariae of Palœopneustes * differ considerably from those of Amphipneustes, 

 which latter genus, on the other hand, resembles Abatits in the structure of the 

 pedicellariae. Unfortunately globiferous pedicellarije have not been found in Pahco- 

 pnnistes. — I cannot, however, enter here on a more detailed discussion of the 

 affinities of these genera, having not yet had the opportunity to study Palœopneustes 

 more .closely. 



* The pedicellarise of Palacpn. cristatus have not been described in a more detailed manner; but I 

 have had occasion to examine those of a specimen in the British Museum; it is especially a conspicuous 

 difference from Aniphipneustes that ophicephalous pedicellariae are very numerous here, but also the tri- 

 dentate pedicellariîe are of quite a different structure. Otherwise I think Gregory was right in separating 

 P. hystrix from the genus Palœopneustes, making it the type of his new genus Archœopneustes, leaving P. 

 cristatus as the type and only recent species of Palœopneustes. (I. W. Gregory, Archaeopneustes abruptus 

 a new genus and species of Echinid from the Oceanic series in Barbados. Qu. J. Geol. Soc. Vol. 48, 1S92. 

 p. 163.) 



