a 
224 Mr. J. Gould on a new Species of Beisura. 
magnified 2 diameters. The dark line c indicates the boundary 
of the coral. 
Fig. 3. Two of the — supporting pillars, with a portion of the cor- 
tie al layer or roof, aes a — of the pin-head or 
A iniit" spicu ule, 
Fig. 4. A group of the mall uie apical which occur principally in 
res i bv e layers of the sarcode, x 100 
S : 50 Tin 
Fig. 5. One of ‘the large oa spicu v EY "eds ry the construction 
rig ght supporting pillars, x 50 lin 
Fig. 6. Spina spicula of the cortex: a, the AY form; " Betan 
of one with head somewhat depressed, x x 60 lin 1 
Fig. 7. * simnto-inoquianchorate z aas of the sarcode, X 250 E 
The ure is an example in profile. 
Fig. 8. en ra gettoides, in section, nat. size, deoe the spherical 
with their radiating fibres contained wi 
Fig. 9. e of these bodies Mol with the inde ami radiating 
X 15 linear: at a and at various other par s the minute 
a rectangulated hexradiate i. spicules are depicted. 
Fig. 10. A small The upper 
part of the ae kapka the finer oaae ee a of the 
cortex, while bel shown al reticulation which usu- 
ally intervenes botre n the — and the mime: network of 
the internal cavity, x 10 linea 
Fig. ll. A transverse section ma indi phe illustrating the internal 
reticula 
0 linear. 
Fig. 12. An isolated fragmen t of this istera reticulation, X 100 linear. 
Fig. 13. The general cortex in transverse section, X 10 linear. 
Figs. li & 15. Fragments of the inner reticulated laminæ, x 50 linear. 
XXI Wii pee of a new ves of Seisura. 
By Jons Gourp, F.R.S 
Seisura nana, Gould. 
Head glossy greenish black; back and tail the same, but 
somewhat lighter; wings brownish black, the secondaries 
with paler edges; under surface white, in ds with buff on 
the chest; bill and legs bluish lead-colou 
Total length 6 inches; bill 3, wing 33, tail 3, tarsi 2. 
Habitat. Northern Australia 
Remark. In form and um this species is very similar 
to Seisura volitans; but it is so much smaller as to preclude 
the possibility of its being identical with that bird. It was 
received from Mr. Waterhouse of Adelaide, South Australia, 
pss [0 untry. 3 
