BY E. F. KALLMANN. 363 



Subfamilia G e l l i n .e. 

 Gellius panis. 

 The species is without a type-specimen, and, so far, I have 

 met with no sponge identifiable with it. There appears to be 

 no reason to doubt that the species belongs to the genus to 

 which Lendenfeld has referred it. 

 Loc. — Port Jackson. 



Gellius raphidiophora. (Text-fig. 10). 



Introductory. — The type-specimen conforms recognisably to 

 the description, but the latter is at fault regarding the size of 

 the sigmata and the maximum stoutness (which is 9-5, not 6/x) 

 attained by the oxea, and also omits to mention that the oxea 

 are of three kinds, two of which — hence rather to be termed 

 raphides —occur in dragmata : that raphides, however, were 

 present in the original specimen, is both indicated by the 

 description and implied by the specific name. 



I have lately collected three specimens (from the underside 

 of rocks exposed at low tide, near Port Jackson), which appar- 

 ently in no way differ from the type of the species, excepting 

 that their spicules are much slenderer, the stoutest oxea hav- 

 ing (as it happens) only about the same diameter as that 

 stated by Lendenfeld. As these specimens differ also among 

 themselves (to the extent of 1'5/x) in the diameter of their 

 stoutest spicules, it is practically certain that they are not 

 varietally distinct from the typical form, and, therefore, I 

 have taken them into account in drawing up the following 

 description. 



Description. — Sponge massive, depressed, basally encrusting. 

 Surface even or slightly undulated, smooth, very minutely reticu- 

 late (owing to the dermal skeleton). Oscula few, scattered, 

 marginally flush with the general surface, measuring up to 3 mm. 

 in diameter. Colour in life, bright yellow; in alcohol, light 

 yellowish-grey. Consistency fairly soft and friable. The interior 

 is traversed in various directions by many canals measuring up 

 to 2 or 3 mm. wide; otherwise the structure is fairly compact. 



