SPONGES FBOM POBTUGAL. 211 



in diameter, are multispiculous ; the secondary fibres are 

 nearly as thick, but unispiculous. The oxea are stout, 

 0108 by 0*009 mm. The dimensions of the spicules of 

 the type-specimen (from Australia) as given by von Len- 

 denfeld, are considerably less, and therefore I am in doubt 

 in regard to the identity of the two forms. Locality : 

 Leca. 



Chalina, sp. ? 



Three small finger-like specimens, about 20 mm. in 

 length, 2 mm. in thickness. Oscula very minute. Colour 

 (in spirit) yellowish-grey. With very little spongin. 

 Primary fibres multispiculous, about three spicules side 

 by side ; secondary fibres unispiculous. Oxea stout, 0'076 

 by 0*006 mm. Locality : Buarcos. 



Chalina, sp. ? 



Small, irregular specimen, encrusting Gorallina. Prim- 

 ary fibres, with a considerable amount of spongin, uni- 

 spiculous, 0*024 mm. thick ; secondary fibres very thin, 

 spongin scarcely covering the spicules. The spicules are 

 slender oxea, 0*076 by 0*003 mm. 



Euspongilla lacustris, Autt. 



A single specimen, from a small river near Caldas de 

 Nixella, North Portugal. 



Gellius pyrrhi, n.sp. 



This new species is represented by two fragments, the 

 larger of which is apparently a piece of a sessile, branching 

 specimen. It is 3*5 cm. in its greatest horizontal expan- 

 sion, 1 cm. in thickness, with about fifteen oscula which 

 are not raised, and are 1 mm. in diameter. Consistency 

 pretty firm and elastic. Colour (in spirit) greyish-yellow. 

 The skeleton consists of oxea which are very variable in 

 size, averaging 0*15 by 0*006 mm., and of sigmata which 

 are exceedingly slender, measuring 0*012 by 0*0004 mm. 

 or even thinner. 



