REPORT ON THE RADIOLARIA. 841 



7. Lychnasjns rottenlmrgii, n. sp. (PL 135, fig. 4). 



I'armal meshes roundisli, about twice as broad as tlie thick bars, and for the most part smaller 

 than the irregular sutural meshes. By-spines (about two hundred to two hundred and fifty) thin, 

 zigzag, half as long as the radius. Kadial maiu-spines very strong, cylindrical in the inner half, 

 in the outer half much thicker and conical, pointed. I call this species in honour of my learned 

 friend, the great patron of zoological studies, Mr. Paul Eottenburg, of Glasgow. 



Dimaisions. — Diameter of the shell 0'15, parmal pores 0'012, sutural pores 0"01 to 0'03, 

 bars 0-006. 



Habitat. — Central Pacific, Station 2/0, depth 2925 fathoms. 



8. LycJinaspis undulata, u. sp. (PI. 135, fig. 2). 



Parmal meshes circular, twice as broad as the thick bars, on an average of the same size as the 

 irregular sutural meshes. By-spines (one hundred and fifty to two hundred) very thin, barbed and 

 zigzag, as long as the radius. Eadial main-spines cylindrical ; their outer pointed part longer 

 than the inner part. 



Dimensions. — Diameter of the shell 01, parmal pores O'Ol, sutural pores O'Ol, bars 0'005. 



Habitat. — Tropical Atlantic, Station 343, surface. 



9. Lychnaspis longissima, n. sp. (PL 134, fig. 6). 



Parmal meshes cii'cular, very small, of the same breadth as tlie thick bars, much smaller than 

 I he irregular sutural meshes. By-spines (one hundred to one hundred and ten) very long and thin, 

 zigzag, twice as long as the diameter of the shell. Eadial main-spines very long and strong, 

 cylindrical (at the base quadrangular, pyramidal), four to six tunes as long as the diameter of the 

 shell, and one fourth as thick as its radius. 



Dimensions. — Diameter of the shell 0'08, parmal pores 0'002, sutural pores O'Ol to 0'015, 

 bars 0'003; length of the radial spines O'd to 0'5. 



Habitat. — Tropical Pacific (Philippines), Stations 200 to 215, surface. 



10. Lychnaspis minima, n. sp. (PL 134, figs. 7, 8). 



Parmal meshes circular, very small, only half as broad as the thick bars, much smaller than the 

 irregular sutural meshes. By-spines (one hundred to one hundred and ten) half as long as the 

 radius, zigzag. Eadial main-spines thick, in the inner part cylindrical, in the outer shorter part 

 conical, of very variable size. 



Dimensions. — Diameter of the shell 0-05, parmal pores 0002, sutural pores 0'006 to 0-012, 

 bars 0-004. 



Habitat. — Antarctic Ocean, Station 154, surface. 



(ZOOL. CHALL. EXP. — PART XL. — 1885.) Rr 106 



