40 
PACIFIC SCIENCE, Vol. XV, January 1961 
family AMPHILECTIDAE (de Laubenfels) 
GENUS Biemna (Gray) 
Biemna rhabderemioides , sp. nov. 
Fig. 10^, b 
OCCURRENCE: Rangitoto, under stones at 
about half tide. 
DESCRIPTION: An encrusting to massive and 
low-lying sponge, the surface of which is mi- 
nutely reticulate, conulose, and hispid. The 
oscules are not apparent. Texture is firm. Colour 
in life bright yellow, in spirit pale yellowish- 
brown. The skeleton is an irregular reticulation 
of styli and subtylostyli bent in the basal third 
and crooked at the proximal end. 
FIG. 10. a , Biemna rhabderemioides, sp. nov. b, 
Biemna rhabderemioides, subtylostyli, raphides (X 
350). 
Fig. 11. a, Halichondria moorei, sp. nov. b, Hali- 
chondria moorei, oxea (X 80 ). 
Spicules. Megascleres: (a) styli .42 to .47 X 
.01 to .016 mm.; (b) subtylostyli .42 to .48 X 
.01 to .016 mm. Microscleres: (a) sigmata (two 
sizes) .042 to .045 and .012 to .014 mm. chord; 
(b) raphides .09 mm. long; (c) microxea .05 X 
.003 mm. 
order HALICHONDRINA (Vosmaer) 
family HALICHONDRIIDAE (Gray) 
GENUS Halichondria (Fleming) 
Halichondria moorei, sp. nov. 
Fig. 1 la, b 
OCCURRENCE: Point Chevalier Reef; Karaka 
Bay ( St. Helier s ) ; Parnell Reef. 
DESCRIPTION : A massive, somewhat depressed 
sponge with surface wrinkled and irregularly 
folded. Oscula not apparent. Colour alive pinkish- 
