1672 THE VOYAGE OF H.M.S. CHALLENGEE. 



5. Gazelletta furcata, n. sp. 



Shell flat, cap-shaped, smooth. Feet cylindrical, nearly straight, at the distal end forked, with 

 two divergent, spinulate, terminal branches. 



Bimemions. — Length of the shell 012, breadth 0'3 ; length of the feet 0-6 to 0'8. 

 Habitat. — "Western Tropical Pacific, Station 224, surface. 



6. Gazelletta hifurca, n. sp. (PL 120, fig. 6). 



Shell cap-shaped, thorny. Feet nearly straight, widely divergent, cylindrical, smooth, at the 

 distal end twice forked, with four divergent, terminal branches, each of which bears a spathillum 

 with six to eight recurved teeth (sometimes, as in the specimen figured, five or six terminal 

 branches instead of four). 



Divicnsions. — Diameter of the shell 01, length of the feet 0'3 to 0-4. 



Habitat. — South Pacific, Station 288, surface. 



7. Gazelletta penicillata, n. sp. 



• Shell campanulate, spiny. Feet cylindrical, strongly curved, smooth, with a bunch of twelve 

 to twenty or more curved spines at the distal end. 



Dimensions. — Diameter of the shell 0"08, length of the feet 0'6. 

 Habitat. — Central Pacific, Station 266, surface. 



Subgenus 3. Gazellonium, Haeckel. 



Definition. — Feet spiny, armed with simple or branched lateral spines, and with 

 terminal branches of the same shape. 



8. Gazelletta pectinata, n. sp. 



Shell flat, cap-shaped, thorny, three times as broad as high. Feet straight or shghtly curved, 

 cylindrical, widely divergent, with four longitudinal rows of short and sunple conical spines, which 

 are directed towards the distal end, and about as long as a single joint of the foot. 



Dimensions. — Length of the shell 016, breadth 0'5 ; length of the feet 1'5 to 2'0, breadth 0'03 

 to 0-05. 



Habitat. — North Atlantic, Faeroe Channel (John Murray), Hebrides (Mcsbius). 



9. Gazelletta pinnata, n. sp. 



Shell hat-shaped, thorny. Feet cylindrical, strongly curved, pinnate, with two opposite longi- 

 tudinal rows of simple conical spines, which are slightly curved, directed towards the distal end and 

 opposed in pairs on about each third or fourth joint. 



Dimensions. — Diameter of the shell O'S, length of the feet 1-2 to 1-5. 



Habitat. — South Atlantic, Station 325, depth 2650 fathoms. 



