REPORT ON THE EADIOLARIA. 380 



2. Panariu in 2)ipMarium, II. aiK 



Surface of tlie cortical shell smootli. Both proximal chambers nearly kidney-shaped ; both 

 distal chambers somewhat smaller, hemispherical. Pores of all four chambers subregular, circular, 

 without hexagonal frames, twice as broad as the bars ; six to seven pores on the half meridian, ten 

 to eleven on the half equator of each chamber. Polar tubuli slender, conical, nearly half as long 

 as the main axis of the shell, one-third as broad at the base as the equatorial constriction. I'ores of 

 the tubuli of the same shape as those of the chambers, but only half as large. (This species resembles 

 somewhat CanvMrtisciis amphiconiscus, I'l. 39^ fig. 19, but with double the number of chambers.) 



Dimensions. — Total length of the shell (without tubuli) 0-25, greatest breadth fl'l ; pores 0-008, 

 bars 0-004; length of the polar tubuli 0-11, basal breadth 0-03. 



Habitat. — Pacific, western tropical part, Station 225, depth 4475 fathoms. 



Subgenus 2. Panaromium, Haeekel. 

 Definition. — Surface of the shell spiny, covered with short thorns. 



3. Panarium annularium, n. sp. 



Surface of the cortical shell thorny, everywhere covered with small bristle-like spmes. All foui' 

 chambers nearly of the same size and form, kidney-.shaped. Their pores subregular, circular, three 

 to four times as broad as the bars ; seven to eight on the half meridian, ten to eleven on the half 

 equator of each chamber. Polar tubuli conical, nearly half as long as the main axis, half as broad 

 at the base as the equatorial constriction. Pores of the tubuli like those of the chambers, Ijut unly 

 half as broad. 



Dinwnsions. — Total length of the shell (without tubuli) O'lG ; breadth of each chamber (>-(t7 ; 

 pores 0-006 to 0-008, bars 0002 ; length of the polar tubuli 0-07, basal breadth 0-03. 



Habitat. — Northern Pacific, Station 253, depth 3125 fathoms. 



4. Panarium artopJwnim, u. sp. 



Surface of the shell thorny, with scattered small spines. Both jjroximal chambers nearly 

 kidney-shaped; both distal hemisjDlierical, somewhat smaller. I'ores of all chamljers irregular, 

 roundish, little broader than the bars ; four to five on the half meridian, six to eight on the half 

 equator of each chamber. Polar tubuli cylindrical, longer than the half main axis, only one-fourth 

 as broad the equatorial constriction. Pores of the tubuli only one-tlurd to one-fourth as broad as 

 those of the chambers. 



Dimensions. — Total length of the shell (without tubuli) 0-22, greatest breadth (in the equator of 

 the proximal chambers) '09 ; pores and liars 0-( 108 to 0-012 ; length of the polar tubuli 0-14, 

 breadth of them 0-02. 



Habitat. — Southern Pacific, Station 289, depth 2550 fatlioms. 



