EEPORT ON THE EADIOLARIA. 869 



1. Pliatnaspis lacunaria, u. sp. (PI. 136, fig. 9). 



Parraal pores irregular quadrangular, of unequal size and form, ten to twelve on each side of the 

 primary diagonal rib, which arises from both Hat sides of the two-edged sj^ines ; two primary 

 aspinal pores opposite on both edges of the latter. Spines much compressed, sword-like, their 

 outer half shorter than the inner. 



Bimcndons. — Length of the shell 0-21 to 0'23, breadth 0'18 to 0'2 ; basal breadth of the spines 

 0-01. 



Habitat. — Central Paciiic, Station 268, surface. 



2. Phatnaspis ensiformis, u. sp. 



Parmal pores irregular quadrangular, of unequal size and form, six to eight on each side of the 

 primary diagonal rib, which arises from both flat sides of the two-edged spines ; two primary 

 aspinal pores opposite on the two edges of the latter. Spines very broad, strongly compressed, 

 sword-like, their outer half larger than the inner. 



Dimensions. — Length of the shell 016, breadth Oil ; basal breadth of the spines 0'02. 



Hahitat. — Tropical Atlantic, Station 348, surface. 



3. Phatnaspis loculata, n. sp. 



Parmal pores regular quadrangular, of nearly equal size and form, twelve to sixteen- on each 

 side of the primary diagonal rib, which arises from both flat sides of the two-edged spines ; two 

 primary aspinal pores on the two edges of the latter. Spines linear, compressed, very long and thin, 

 their outer half three to four times as long as the inner. 



Dimensions. — Length of the shell 0-24, breadth 018; breadth of the spines 0-004. 



Halitat. — North Atlantic, Station 354, surface. 



4. Phatnaspis fenestrata, HaeckeL 



Hulioiiimatiilium feneslratum, Haeckel, 186-2, Monogr. d. Radiol., p. 421. 



Parmal pores regular quadrangular, of nearly e(iual size and form, six to eight on each side of 

 the primary diagonal rib, which arises from both flat sides of the two-edged spines ; two primary 

 aspinal pores on the two edges of the latter. Spines linear, little compressed, or nearly needle- 

 shaped, very long and thin, their outer half five to ten times as long as the inner. 



Dimensions. — Length of the shell O'll to 0-12, breadth 0-07 ro 0-08 ; breadth of the spines 

 0-002. 



Habitat. — Mediterranean (Messina), surface. 



5. Phatnaspis cristata, n. sp. (PL 136, fig. 6). 



Parmal pores circular, of very different size, separated by high sqiiare crests, ten to twelve on 

 each side of the high, comb-like, primary diagonal rilj, which arises from both flat sides of the two- 



