89 



zooids, with the exception of a narrow groove on the prorachidial surface, which 

 extends the whole length of the rachis and has a markedly yellow colour. 



In the autozooids the spicules are irregularly shaped rods blunt at the ends, 

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

 breadth in millimetres : 



Rods, 0-2GX 0-04; 0-08xO-07. 

 Hour-glass forms, 0-3x0-15 ; O'^xO-l. 



In the lower part of the stalk the spicules 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 Ijroad end is very often marked l»y 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 : 



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



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

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

 form spicules, and in the larger size of the spicules. 



Locality : Station 169 ; IS" 05' 27" N., 80° 33' 44" E.; 91 fathoms. 



Herklots' type was obtained from Japan. 



Sclerobelemnon koUikeri, n. sp. Plate VI. fig. 8. 



If A. von Kolliker's separation of Sclerobelemnon from KopJiobelemnon 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 coenenchyma 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, 

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

 surface of the rachis. As Kolliker describes in S. schmeltzii, 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 spiarse occurrence of spicules, but some were found in the calyx- 



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