240 Records of the Indian Museum. [Voiv. IX, 1913.] 



straight, vertical tubule and is itself spherical or subspherical and 

 from 0'23 to 0-35 mm. in diameter. It is of a bright golden colour 

 when clean but with its cage appears of a dirty brown. The 

 diameter of the cavity of each cage is about 0*5 mm. and there is 

 no pneumatic substance between the walls and the gemmule. 



Type. — No. Z.E.V. 5504/7 Ind. Mus. 



Habitat. — Tropical Africa, probably the Nile basin. 



The new species differs from most of its congeners in having 

 rough instead of smooth skeleton-spicules, and also in their small 

 size. In these characters it agrees with C. inicramphidiscoides , 

 Weltner,^ from Central Africa; but the spicules of that species 

 are of different shape and proportions and the macroscleres 

 sometimes bear long spines, while amphioxi as well as amphidiscs 

 occur free in the parenchyma. A noteworth}'- feature of C scabri- 

 spiculis is the tendency displayed by both skeleton- and gemmule- 

 spicules to be inflated at the extremities. A similar tendency 

 occurs in some of the gemmule-spicules of the type-species of the 

 genus, C. loricata (Weltner) ;* but I have not observed it displayed 

 to anything like the same extent in the macroscleres of any species 

 in which the macroscleres are smooth, although it occasionally 

 occurs in a slighter degree. 



1 " Siisswasserschwamme (Spongillidae)" in Wiss. Ergebn. Deutsch. Zentral- 

 Afrika-Exp. 1907-1908, vol IV (Zool. ii), pp. 477-481, figs, i-ii (1913). 



* Kirkpatrick, Rec. Ind. Mus., vol. II, pp. 97-99, pi. ix, fig. 9a (1908). 



