REPORT ON THE RADIOLARIA. 1391 



spirally convoluted. Outer coronal of the peristome with twelve to fifteen short, divergent feet, 

 inner with as many convergent, longer feet. 



Dimensions. — Length of the three joints, « 0-04, i 0-05, c 0-06 ; breadth, a 0-04, b 01, c Olo. 



Rabitat.—CeiitTal Pacific, Station 272, depth 2600 fathoms. 



3. Lamprocyclas dejiorata, u. sp. (PI. 74, fig. 10). 



SheU ovate, smooth, with deep collar, but indistinct lumbar stricture ; very similar to the two 

 preceding species, but with different horn and peristome. Length of the three joints = 3:5:8, 

 breadth = 3 : 10 : 13. CephaUs subspherieal, with a pyramidal horn of twice the length, the three 

 faces of which are deeply concave. Thoracic pores half as large as the abdominal, both subregular, 

 double-edged. Outer coronal of the wide peristome with nine short, triangular, subvertical feet, 

 inner with nine larger, horizontal feet, lying in the plane of the wide mouth. 



Dimensions. — Length of the three joints, a O'Oo, I 0-05, c O'OS ; breadth, a 0-03, h 01, c 013. 



Hahitat. — Central Pacific, Station 265, depth 2900 fathoms. 



4. Lamprocyclas saltatricis, n. sp. (PI. 74, fig. Ifi). 



SheU conical, rough, with two slight strictures. Length of the three joints = 2:2:3, breadth = 

 1:4:6. Cephalis ovate, with a large, prismatic horn, half as long as the shell. Pores subregular, 

 circular, not double-edged, three times as broad in the inflated abdomen as in the hemispherical 

 thorax. Outer coronal of the wide peristome with twelve to fifteen divergent feet, inner with 

 fifteen to twenty conical feet, which are curved inwards nearly horizontally. 



Dimensions. — Length of the three joints, a 0-04, b O'Oo, c 0-07 ; breadth, a 0-025, b 01, c 015. 



EaUtat. — North Pacific, Station 244, depth 2900 fathoms. 



5. Lamprocyclas regince, n. sp. (PL 74, figs. 11, 12). 



SheU campanulate, with two slight strictures. Length of the three joints = 2:3:3, breadth = 

 2:5:6. CephaUs subcylindrical, with about fifteen longitudinal rows of circular pores, separated 

 by prominent, paraUel crests, and with a very large sword-like horn, nearly as long as the shell. 

 Thorax hemispherical, smooth, with elegant, circular, hexagonaUy-framed pores. Abdomen dilated, 

 with similar but larger pores, armed with hook-shaped spines. The two inferior rows of these 

 hooks form the double coronal of the peristome ; the feet of the outer are curved downwards, of 

 the inner inwards. 



Dimensions. — Length of the three joints, a 0-04, b 0-06, c 0-06 ; breadth, a 0-04, b 01, c 012. 



Habitat. — Central Pacific, Station 274, depth 2750 fathoms. 



6. Lamprocyclas cegles, Haeckel. 



Podocyrtis cegles, Ehrenberg, 1854, Mikrogeol., Taf. xxxv. B. B iv. fig. 18. 



SheU campanulate, conical, thorny, with two deep strictures. Length of the three joints = 

 3:5:5, breadth = 3 : 8 : 11. Cephalis ovate, with a stout, three-sided prismatic horn of twice the 



