REPORT ON THE RADIOLARIA. 997 



6. Toxarmm furcatum, ru sp. 



Galear bows simijle, thoracal bows forked, both somewhat broader than the frontal bows. 

 Shell therefore slightly constricted in the equatorial plane. Sagittal constriction rather deep, equal 

 in the apical and basal parts. All bows armed with scattered spines, which are partly simple, partly 

 forked. 



Dimensions. — Length of the shell 014, breadth 01 G. 



Habitat. — Central Pacific, Station 270, depth 2925 fathoms. 



7. Toxarium pedatum, n. sp. 



Galear bows simple, smaller than the frontal bows, which are again smaller than the thoracal 

 bows. Therefore the breadth of the shell increases towards the base. Sagittal constriction flat in 

 the apical part, deep in the basal part. All bows armed with small irregularly scattered spines ; 

 at the base six larger divergent feet (two lateral, two anterior, and two posterior). 



Dimensions. — Length of the shell 017, breadth 015. 



Habitat. — South Pacific, Station 295, depth 1500 fathoms. 



Sul)genus 3. Toxonium, Haeckel. 

 Definition. — Galear aud thoracal bows forked. 



8. Toxarium costatum, n. sp. 



Galear and thoracal bows forked, smaller than the frontal bows, all bows thorny, witliout larger 

 spines. Sagittal constriction on both poles deep. Lateral outlines of the shell nearly parallel 

 Dhncnsions. — Length of the shell 015, breadth 012. 

 Habitat. — Indian Ocean, Socotra (Haeckel), surface. 



9. Toxarium hifurcum, n. sp. (PI. 93, fig. 20). 



Galear and thoracal bows forked, the former smaller than the frontal bows, the latter larger. 

 Sagittal constriction rather ilat on the apical pole, which bears a vertical forked horn, very deep on 

 the basal pole of the primary ring. All bows armed with numerous spines, which are partly 

 simple, partly forked, and mainly developed at the basal part of the thoracal bows. 



Dimensions. — Length of the shell 0'2, breadth 0'2. 



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



Genus 428. Microcuhus,^ Haeckel, 1881, Prodromus, p. 447. 



Definition. — T y m p a n i d a with two l^sected horizontal rings, connected by four 

 vertical columellse, which are bisected again hy an equatorial ring. 



^ ilficrocuiu* = Small cube ; fiix.^6?, xS/3of. 



