REPORT ON THE RADIOLARIA. 1089 



The genus Rhodospyris differs from the preceding Fatagosi^yris in the development 

 of three eoryphal horns (one odd middle apical horn, and two paired frontal horns on 

 each of its sides), and therefore bears the same relation to the latter that the 

 similar Anthospyris does to Petalospyris. When the numerous basal feet of Antho- 

 spyris become connected by lattice-work, Rhodospyris arises. 



1. Rhodospyris tricornis, n. sp. (PL 83, fig. 13). 



Cephalis nut-shaped, with deep sagittal stricture, and three short apical horns of half its length ; 

 the middle odd horn is straight, the two paired lateral horns are curved outwards. Thorax some- 

 what larger than the cephalis, dilated around the wide open mouth, with a coronet of twenty-five 

 to thirty slender basal feet, which are slightly curved and convergent, about as long as the thorax. 

 Pores small, numerous and circular. 



Dimensions. — -CephaUs O^OS long, 0'07 broad ; thorax 0'06 long, 0'08 broad ; horns 0'02 long, 

 feet 0-06 long. 



Habitat. — Indian Ocean, Madagascar (Eabbe), surface. 



2. Rhodospyris triceros, n. sp. 



Cephahs nut-shaped, with deep sagittal and deep collar stricture, and with three stout divergent 

 horns of nearly equal length. Thorax cyUndrical, twice as long as the cephalis, and of the same 

 breadth, with a coronet of twelve to sixteen broad, lamellar, rectangular, perpendicular feet around 

 the mouth, about as long as the cephalis. Pores rather large, subregular, circxilar. 



Dimensions. — Cephahs 0"06 long, 0'08 broad ; thorax 012 long, O^OQ broad. 



Habitat. — Indian Ocean, Singapore (Trebing), surface. 



Genus 478. Desmospyris^ Haeckel, 1881, Prodromus, p. 443. 



Definition. — P h o r m o s p y r i d a with numerous basal feet (nine to twelve or more), 

 without a eoryphal horn. 



The genus Desmospyris differs from the two preceding polypodal genera in the com- 

 plete absence of horns on the eoryphal face of the cephalis. It therefore corresponds to 

 Gorgospyris among the Zygocyrtida, and arises when the numerous basal feet of the 

 latter become connected by lattice-work. 



1. Desmospyris mammillata, n. sp. (PI. 83, fig. 14). 



Shell mammillate, with deep sagittal and slight collar constriction. Pores irregular, roundish. 

 CephaUs nut-shaped, larger than the inversely conical thorax, and twice as broad as the constricted 



1 Desmospyris = Basket with a band or string ; oiafios, aiiv^i;. 

 (ZOOL. CHALL. EXP. PAET XL. — 1886.) Er 137 



