REPORT ON THE RADIOL ARIA. 789 



2. Amphibelone culteUata, u. sp. (PL 132, iig. 10). 



Two principal spines Ijroad, two-edged, knife-shaped ; two opposite in the equatorial plane, thin 

 and broad wings or lamellie are developed, and these enclose the proximal part of Ijoth spmes, whilst 

 tlieir distal part is free, cylindrical, with conical apex : the two wings of the longer caudal spine are 

 lanceolate, twice to four times as broad as the two wings of the shorter frontal spine ; theh- base is a 

 simple pyramid without leaf-cross. Eighteen smaller spines conical, with bristle-shaped prolonga- 

 tion, one-fourth to one-half as long as the frontal spine. Central capsule green, semitransparent. 



Bivwnsions. — Length of the frontal spine O'l to 0-2, breadth 0-02 to 0-03 ; length of the caudal 

 spine 0-2 to 0-4, 'breadtli 0-04 to 0-08; length of the eighteen smaller spines 0-05 to O'lS. 



Hiibitat. — Indian Ocean, Maldive Islands (Haeekel), surface. 



3. Amphibelone pijnunidata, u. sp. (PL 132, fig. 9). 



Two principal spines four-winged, with four crossed, verj- thin and broad wings, which are some- 

 what broader in the convex middle part than at either end ; both ends of each spine four-sided 

 pyramidal, with four concave edges and a very small terminal pyramid ; base without leaf-cross. 

 The longer caudal spine is twice as broad at the distal end as at its proximal end, and three times 

 as broad as the distal end of the shorter frontal spine. Eighteen smaller spines bristle-shaped, 

 witli four-sided pyramidal bases. Central capsule pyramidal, enveloping the two principal spines 

 throughout their whole length ; the base of the slender quadrangular pyramid is on the caudal, 

 the apex on the frontal pole of the longitudinal axis. 



Uimensions. — Length of the frontal spine 0-2 to 0-2o, distal Ijreadtli Q-Ol ; length of the caudal 

 spine 0-3 to 0-4, distal breadth 0-03 ; length of the eighteen .smaller spines 0-04 to O'OS. 



Habitat. — Cape of Good Hope, Station 143. depth 1900 fathoms. 



4. Amphibelone anomala, HaeckeL 



Amphiloiichc anomala, Haeekel, 1862, Monogr. d. Radiul., p. 394, Taf. xvl Kg. 8, Taf. xviii. 



figs. 23a,- 23b. 

 Acanthometm anomala, Haeokel, 1860, Mouatsber. d. k. AkaJ. J. Wiss. Berlin, p. 808. 



Two principal spines four-winged, nearly prismatic, with four crossed, very broad and thick 

 wings ; both ends of each spine four-sided pyramidal, with four concave edges and a very small 

 terminal pyramid ; base without leaf-cross. The edges of the four wings are concave on the shorter 

 frontal, convex on the longer caudal spine. Eighteen smaller spines only one-fourth to one-half as 

 long, linear, two-edged, with two parallel teeth on the distal end. Central capsule four-sided 

 ])rismatic, olive-green, enveloping almost completely the two principal spines. 



Dimensions.— Length of tl>e frontal spine 012, middle breadth 0-016 ; length of the caudal 

 spine 0-14, middle breadth 0-024; length of the eighteen smaller spines 0-04 to 0-06. 



Habitat. — Mediterranean (Messina), surface. 



