BY E F. HALLMANK^. OVS 



Plate xliv. 



Figs. 1,2. — Bhaphoxya typica, sp.nov. ; surface-sections, showiiij,' tlie re- 

 ticulate pattern of the surface and the arrangement of the dermal 

 pores; ( x S.5). 



Fig.3. — RhaphoxyaC'.) pallida Dendy ; surface-section, showing dermal 

 pores; ( x 85). 



Fig. 4. — Dtsmoxya Janata Carter; longitudinal section of the skeleton ; 

 ( X 12). 



Postscript (added 15th December, 1916 ). 



In Part ii. (anlea, p. 500), in my remarks on the distinction 

 between the genera Biemna and Tylodesma, I expressed the 

 opinion that, if DesmaceUa fragilis Kieschnick, is corrtctly de- 

 scribed as possessing a spiculation consisting of styli, sigmata, 

 trichodragmata, and toxa, it would be advisable to estabbsh a 

 new genus for its accommodation (rather than adopt the only 

 seemingly possible alternative, namely, that of merging the two 

 genera Bif.mna and Tylodesma in one). Since then I/have 

 received a copy of Prof. Dendy 's recent " Report on tlie Non- 

 Calcareous Sponges collected by Mr. James Hornell at Okha- 

 mandal,"* in wliich is contained the information that toxa, in 

 addition to st3di, sigmata, and trichodragmata, likewise occur in 

 Desmacella tubtdata. For the reception of these two species, 

 therefore, and for such others as may be found to possess toxa 

 together with trichodragmata, irrespective of whether the mega- 

 scleres be styli or tylostyli, or of the presence or absence of 

 sigmata, I propose the new genus Toxemiia, with D. tiibiUata as 

 the type-species. 



The family Axinellidse, as at present constituted, admits of 

 subdivision into four groups, which I think might conveniently 

 be raised to the rank of subfamilies, with the designations Axi- 

 nellinse, Desmoxyinte, Trachycladinse, and Desmacellinas. The first 

 would comprise all the genera without mici'oscleres; the second, 

 Desmoxyaig.ii.), Higginsia, Ilalicnemia, Holoxea, and {1)Lao- 

 ncenia(g.n.); the third, Trachycladiis alone; and the fourth, the 

 remaining genera with microscleres, viz., Tylodesma, Toxem,na 



* Dendy, A. , in " Report to the Government of Baroda on tlie Marine 

 Zoology of Okhamandal in Kattiawar," Part ii. London, ISJIG. 



