REPORT ON THE RADIOLARIA. 1457 



Dimensions. Length of the shell (with four joints) 018, breadth 009. Length of the single 

 joints, a 0'05, 6 O02, c 0-08, d 0'03. 



Habitat. Central Pacific, Station 271, depth 2425 fathoms. 



2. Phormocampe lamprocyclas, n. sp. (PI. 77, fig. 16). 



Shell conical, with three internal annular septa. Length of the four joints = 1:1:3:4. 

 Cephalis subspherical, as large as the thorax, with a stout, pyramidal horn of three times the length, 

 bearing at the apex a spinulate knob. The fourth joint is the broadest, and has large, circular, 

 hexagonally-framed pores, two to three times as broad as the circular pores of the three first 

 joints. Peristome with a double coronal of short, conical, divergent feet, nine on each coronal. 



Dimensions. Length of the shell (with four joints) 016, breadth Oil. Length of the single 

 joints, a 0'02, b 0-02, c O'Oo, d 0'07. 



Habitat. Central Pacific, Station 272, depth 2600 fathoms. 



3. Phormocampe eucalyptra, n. sp. (PI. 77, fig. 14). 



Shell flatly conical, somewhat broader than long, with four internal annular septa. The four 

 joints increase gradually in length and breadth. Pores subregular, hexagonal. Cephalis hemi- 

 spherical, with two small, divergent horns. Peristome with a coronal of thirty to forty short, conical, 

 divergent feet. 



Dimensions. Length of the shell 014, breadth 017. Length of the single joints, a 0'02, 

 b 0-03, c 0-04, d O05. 



Habitat. North Pacific, Station 241, depth 2300 fathoms. 



5. Phormocampe metalis, n. sp. 







Shell spiny, with three broad internal annular septa. Three of the four joints are nearly 

 equal in length, each being three times as long as the first. Cephalis subspherical, with a conical 

 horn of twice the length. The second and third joints are together nearly ellipsoidal, and are 

 not separated externally. The fourth joint is separated from them by a deep stricture, one and a 

 half times as broad, and flatly conical. Pores subregular, circular, hexagonally framed. Peristome 

 with a coronal of twenty to thirty strong, conical, divergent feet. 



Dimensions. Length of the shell 0'22, basal breadth 016. Length of the single joint, a 0-02, 

 b 0-06, c 0-06, d OD8. 



Habitat. Central Pacific, Station 265, depth 2900 fathoms. 



Subgenus 2. Gyrtocorys, Haeckel, 1881, Prodromus, p. 438. 

 Definition. Shell with four or more transverse strictures, and five or more joints. 



(ZOOL. CHALL. EXP. PART XL. 1886.) El 183 



