REPORT ON THE RADIOLARIA. Ill 



5. Tnjpanosphcera transformata, n. sp. (PL 5, figs. 1, 2). 



Shell quite irregular, of very variable, roundish, or polyhedral form, with small irregular roundish 

 pores, two to four times as broad as the bars. Ten to thirty on the half meridian. The dilTerent 

 form of the shell depends ui^on the variable number of tubuH, whicli arise at irregular distances 

 from the shell ; commonly three to four, often also five to six, more rarely one or two. The tubuU 

 are now more conical, now more cylindrical, about as long as the shell radius, at other times 

 scarcely one-half or one-third as long, with a coronal of ten to twenty more or less curved teeth 

 on the narrower distal mouth. All tlie different forms are to be found in one and tlie same 

 colony, as shown in fig. 1. This coenobium, which I observed living in Ceylon, exhibited the same 

 peculiar formation as I figured in CoUosphccra Jmxlcyi in my MonogTaph 1862 (Taf. xxxiv. fig. 1). 

 In the centre of the jelly-sphere lies a large globular alveole, surrounded by numerous small, 

 young central capsules without shell ; whilst in the surface lies one layer of older capsules, enclosed 

 in shells. Some of the younger capsules exhibit self-division. 



Dimensions. — Diameter of the shells 0-08 to 0'12, pores 0'002 to 0'006 ; length and breadth 

 of the tubuli 003 to 0-05. 



Habitat. — Indian Ocean, Belligemma, Ceylon, surface. 



Genus 39. Caminosphcera,^ n. gen. 



Definition. — C olio sp hgerid a with simple shells, the pores of whicli are pro- 

 longed into external branched radial tubuli with solid wall. 



The genus Caminosp>hcera differs from Siphonosplicera (and from all other Collo- 

 sphferida) in the ramification of the tubuli, which arise from the pores ; the walls of the 

 tubuli are solid, not fenestrated. 



1. Caminosph(Bra furcata, n. sp. 



Shell spherical or subspherical, with a variable number (four to eight) of short cyKndrical tubes, 

 irregularly scattered, about as long as the radius of the shell. Every tube forked, with two 

 cyUndrical branches of the same size as the simple basal part of the tube. Mouth of the 

 branches truncated, not dilated. Pores of the shell between the tubes very small, aU of the same 

 size, half as broad as their bars. Fifteen to twenty pores in the half meridian of the shell. 



Dimensions. — Diameter of the shell 01 to 0"12, of the pores O'OOl to 0-002 ; length of the 

 tubules 0-05 to 0-06, breadth of them 0-012 to 0-015. 



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



2. Caminosphcera elongata, n. sp. 



Shell spherical, with a large number (twelve to twenty) of long cyhndrical tubes, irregularly 

 formed and scattered, somewhat longer than the diameter of the shell. Every tube forked at 



1 Caminosp/i<Bi-a = Chimney-spliere ; xifnuos, atpat^a. 



