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zooids, with the exception of 11 narrow groove on the prorachidial surface, wliich 

 extends the whole length of the rachis ami ha- a markedly yellow colour. 



In the autozooids tlie spicules arc. irregularly shaped rods blunt at the ends, 

 often hour-glass-like. The following measurements were taken of length and 

 breadth in millimetres : 



Rods, 0-26x0-04; 0'08x0'07. 

 Hour-glass forms, '3x0 '15 ; 0"2xO'l. 



In the lower part of the stalk the spieiiles are flat, pear-shaped, spade shaped, 

 biscuit-shaped, three-cornered, and cruciform, the last two forms having a distinct 

 X-shaped marking near the centre. In several of the biscuit-shaped spicules there 

 is a distinct single mark running across the breadth, and in the pear- and spade- 

 shaped forms the broad end is very often marked by small teeth. The surface of 

 all the forms has a pitted or granular appearance. The following measurements 

 were taken of length by breadth in millimetres : 



0-17x0-05; 0-16x0-08; 0-15x0'055; 0'05x0'05. 



This specimen differs from the typical K. Luryeri, Herklots, in having the 

 spicules arranged in bauds on the autozooids, in the presence of markedly cruci- 

 form spicules, and in the larger size of the spicules 



Locality : Station 169 ; 13 05' 27" N., 80 33' 44" E.; 91 fathom-. 



Herklots' type was obtained from Japan. 



Sclerobelemnon kollikeri, u. sp. Plate VI. fig. 8. 



If A. von Kolliker's separation of Sclerobelemnon from Kophobelemnon is 

 justified, which we venture to doubt, this specimen should be referred to the former 

 genus, for it has no spicules in its tentacles, and the autozooids are not arranged in 

 longitudinal rows. 



The single somewhat imperfect specimen is about 60 mm. in height, and is 

 markedly club-shaped. The ccenenchyma of the stalk and of the lower part of the 

 rachis is damaged, allowing the axis to project for 12 mm. 



The axis is cylindrical, and tapers to the lower end. It is marked by a num- 

 ber of longitudinal furrows, two of which are considerably deeper than the others. 



The rachis is longer than the stalk and considerably swollen near the tip, where 

 it has a breadth of 10 mm. There is a prorachidial streak, 3 mm. in breadth, 

 free from autozooids, densely covered by longitudinal rows of siphonozooids. 



The autozooids are arranged bilaterally in about six short oblique rows, 

 usually three in each row. The siphonozooids occur over the whole unoccupied 

 surface of the rachis. As Kolliker describes in S. Bchmeltzii, there is marked 

 contrast between the more delicate distal region of the autozooid and the more 

 substantial calyx-like proximal region. 



There is a very sparse occurrence of spicules, but some were found in the calyx- 



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