300 APPENDIX. No. XIII. 



and the specimens were for the most part few in number, and presented 

 no great variety of form. An exception, however, must be made in the 

 case of the most northerly sounding (lat. 83 19' N.), which, taking into 

 account the very small quantity of material, yielded a considerable series. 

 The species of Radiolaria have not been determined, but the following 

 is a list of the more prominent genera represented: Dictyopodium, 

 Haliomma, Tetrapyle, Hdiodiscus, Actinomma, Spongodiscus, Spongo- 

 trochus, Spongaster, Trematodiscus, and Euchitonia. H. B. B. 



