REPORT ON THE RADIOLARIA. 1353 



abdomen sometimes more irregular and unequal). Feet as long as the abdomen, arising from it 

 with triangular base, diverging, fenestrated throughout the entire length. 



Dimensions. — Length of the three joints, a O'OS, b 0-06, c O'OS ; breadth, a O'OiJ, b 0-08, c 01. 



Habitat. — Central Pacific, Station 263, depth 2650 fathoms ; fossil in Barbados. 



2. Dictyopodimn oxylophus, Ehrenberg. 



Didyopodiwn oxylophus, Ehreuberg, 1875, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 68, 

 Taf. xix. fig. 5. 



Shell subcorneal, smooth, with two slight strictures. Length of the three joints = 2 : 5 : 7, 

 breadth = o : 8 : 10. Cephalis subspherical, with a small, conical, smooth horn of the same length. 

 Pores irregular, polygonal, roundish, slightly larger in the alxlomen than iu the thorax. Feet as long 

 as the thorax, arising from it with triangular base, diverging, fenestrated throughout the entire length. 

 (The figures of this and the preceding species given by Ehrenberg are incomplete, having been 

 drawn from spoiled specimens. In perfect specimens all the three feet are present and diverge 

 in both species in tlie direction of the conical outline. The main difference between the two 

 species is connected with the pores, wliich in Didyopodium oxyloplms are larger and more irregular, 

 the two strictures are here not so deep.) 



BimensioTis. — Length of the three joints, « 0-02, b 0-05, c 0-07 ; breadth, a O'OS, b O'OS, c 01. 



Sabiiat. — Fossil in Barbados. 



3. Dictyopodium scaphopodium, n. sp. (PI. 73, fig. 8). 



Shell campanulate, conical, with two deep strictures. Length of the three joints = 1:2:6, 

 breadth = 1:4:8. Cephalis hemispherical, with a conical, smooth horn of twice the length. 

 Thorax hemispherical, rough, with small, regular, circular pores. Abdomen inflated and papillate, 

 with very large, polygonal or roundish pores (eight to ten times as broad as the thoracic pores) 

 Feet divergent, nearly as long as the shell, S-shaped, bent outwards, solid and cylindrical in the 

 proximal half, shovel-shaped and fenestrated in the distal half. 



'Dimensions. — Length of the three joints, a 0-02, b 0-04, c 012 ; breadth, a 0-025, b O'OS, c 010. 

 Habitat. — Central Pacific, Station 266, depth 2750 fathoms. 



4. Dictyopodium cothurnatum, Haeckel. 



Podoayrtis cothurnafa, Ehrenberg, 18.54, MikrogeoL, Taf. xxxvi. fig. B. 21 ; Abhandl. d. k. Akad. 



d. Wiss. Berlin, 1875, p. 82, Taf. xiv. fig. 1. 

 Anthocyrtis cothurnata, Haeckel, 1862, Mouogr. d. Radiol., p. 310. 



Shell subconical, rough, with two deep strictures. Length of the three joints = 1:2:3, 

 breadth = 1:3:5. Cephalis hemispherical, with a very large cylindrical, vertical horn, about as 

 long as the whole shell. Thorax conical, rough, with small, regular, circular pores. Abdomen 

 inflated, with very large, roundish pores (four to five in the course of its length), six to eight times 



(ZOOL. OHALL. EXP. —PART XL. — 1886.) Rr 170 



