KEPORT ON THE EADIOLAEIA. 857 



1. Dorypelta stauvoptera, n. sp. 



Apophyses of the long compresseil radial spines simple, couical, about as long as their distance 

 from the shell. At the base of each spine (in the outer sliell) two elliptical aspinal pores, two to 

 three times as large as the other pores. 



Dimcnsioiis. — Diameter of the outer shell O'l, of the inner 0'044. 



Habitat. — North Pacific, Station 238, surface. 



2. Dorypelta gladiata, n. sp. 



Apophyses of the long cylindrical radial spines simple, triangular, about half as long as their 

 distance from the shell. At the base of each spine (in the outer shell) four crossed aspinal pores, 

 the two opposite of which are much larger than the other two pores. 



Dimensions. — Diameter of the outer shell 0-09, of the inner 0'04. 



Habitat. — Central Pacific, Station 266, surface. 



Subgenus 2. Donjpeltidium, Haeckel. 



Definition. — Free apophyses of the radial spines l»ranched, with free (not anasto- 

 mosing) branches. 



3. Dorypelta furcata, n. sp. 



Apophyses of the long compressed spines simply forked, each with two simple parallel f(_irk- 

 liranches. At the liase of each spine two elliptical aspinal pores, much larger than the other 

 roundish pores. 



Dimensions. — Diameter of the outer shell O'OS, of the inner 0-04. 



Habitat — Central Pacific, Station 274, snrface. 



4. Dorypelta tetrodon, n. sp. 



Apophyses of the long compressed spines crossed by a transverse beam, which bears four 

 simple parallel fork-branches or spikes (perpendicular to the beam), two larger medial and two 

 smaller lateral. At the base of each spine four crossed aspinal pores of nearly equal size, little 

 different from the other pores. 



Dimensions. — Diameter of the outer shell 0-09, of the inner 0-035. 



Habitat. — South Pacific, Station 284, surface. 



5. Dorypelta ramona, n. sp. 



Apophyses of the long cylindrical spines crossed by a transverse beam, which bears four to si.K 

 irregularly branched spikes or fork-branches, the medial of which are larger than the lateral. At 

 (zooL. on.^LL. EXP. — PART XL. — 1885.) Er 108 



