DENDY— NON-CALCAREOUS SPONGES 135 



50. Suberites flabellatus Carter. 



Suherites flabellatus Carter [1886]. 



■? Suberites glohosa (elongated form) Carter [1886]. 



? Suberites carnosus Keller [1891]. 



Suberites flabellatus Dendy [1897]. 

 A single good specimen in the collection closely resembles in external form Keller's 

 figure of " Suberites carnosus " from the Red Sea. It agrees very closely, however, 

 with the Victorian species described by Carter and myself, and I have no hesitation 

 in identifying it with that, which may be, after all, merely a variety of S. carnosus. 

 The tylostyles in the Okhamandal sponge are long, straight and slender, and they all 

 seem to have well-developed heads, usually of the " enormispinulate " type. In the 

 interior of the sponge they attain a length of about 0-7 mm., with a diameter of about 

 0-01 mm. ; but they are touch smaller in the surface-brushes. 



Previously known Distribution. Near Port PhilUp Heads, Australia (Carter, Dendy) ; 

 ? Eed Sea (Keller). 



Register Number, Locality, &c. II. 1, off Poshetra, January 7, '06. 



51. Suberites crueiatus Dendy [1905]. 



I identify with this species, originally described from Ceylon, two small, irregularly 

 massive specimens, each of which shows a tendency to give off digitiform processes. 

 The larger of the two measures about 18 mm. in greatest length by 9 mm. in greatest 

 breadth. The colour in spirit is pale yellow. The surface is uneven but nearly smooth, 

 and shows small, rounded, translucent (pore ? — ) areas, as described for the type. 



The arrangement of the skeleton agrees on the whole with that found in the type. 

 The tylostyles exhibit the same peculiar form of the heads but are considerably larger 

 than in the type ; in fact, they may be nearly twice as large, at any rate in the deeper 

 parts of the sponge, while they diminish in size in the surface-brushes. A large number 

 of tylostyles occur scattered tangentially in the dermal membrane between the ends 

 of the surface-brushes, a feature which is not conspicuous in the type. 



Previously known Distribution. Ceylon (Dendy). 



Register Numbers, Locality, &c. III. 10 a and b (possibly parts of same specimen) ; 

 dredged off Dwarka. 



52. Polymastia gemmipara n. sp.— (Plate I., Figs. 9a, 9&; Plate IV., Figs. 

 26a, 266). 



The single specimen (Figs. 26a, 266) has evidently been torn off from the sub- 

 stratum, part of which, in the form of a small pebble, remains attached at one side. 

 It now has the form of a hollow, thin-walled sac, widely open below, where it has been 

 damaged, and produced above into five slender, hollow processes or fistulse, one of 



