■^0 



smooth^ curved, with long oval head 45 ,« in brcadtii uol uu- 

 \oinnion at the surface. S.mall oxea (i-ig. ib) 1900 X 3^ -'*.• 



Anatnaenes (Figs, ig, g'), rhabdonie y.4 mm. X -02 mm-, with 

 hue hair-like terminations; length of cladus 75 /«, chorda 110 /*• 



Protriaenes (,Figs. ic, c') with short stout cladi; rhabdonie 5300 

 X 31 /t, length of cladus 78 /t, cliorda 70/). 



Frotrisenes (Fig. ih) trichodal, rhabdonie 690 X 2 /<; cladi un- 

 equal, longest cladus 45 /c v ^* "-^ 

 i'rodisenes (Figs- ik, k') trichodal, abundant in poral and 

 oscular areas with dimensions equal to those of trichodal protri- 

 aenes ; cladi about equal. r 1 j- 

 Orthotrigenes (Fig. idj, rhabdonie 4900 X 35/' » length of cladi 

 340 ,1, slightly cm-ved. Fig. id' represents a plagiotria^ne, which 

 only occurs rarely- 



Orthodisenes (Fig. le), abundant, and orthomonaenes (Fig. ifj 

 with dimensions similar to those of the orthotriaenes- 



iVlicroscleres. — Sigmaspires of two kinds, viz-, a serpentine 

 variety (Fig. il) abundant^ 35 to 45 ," in length, with long open 

 coils, and a smaller C-and-S shaped variety (Fig. im) 16 to 20 /< 



in length- , , o 



Locality.— Cape Natal W. by N. ^ N., 11 miles; depth 185- 

 200 fathoms. Bottom— sand and mud ; obtained by shrimp trawl 

 The new species is represented by five specimens, the largest) 

 of which is 8 X 6.5 cm. in horizontal plane, by 5 cm. in height, 

 and the smallest 3-5 X 2.6 cm. in horizontal plane by 2.8 cm. in 

 height Of the five specimens, four are provided with a frmge 

 round the poral vestibule, but only one with a well-marked fringe 

 round the oscule, a poral fringe beingalso present m the at er 

 instance. The nearest allied genus is Cmachyra of Sollas with ts 

 numerous poral and oscular depressions. C. barbata SoUas 11 J, 

 p 27, pis. iii. and xxxix., from Kerguelen is provided with a 

 dense root-tuft and with a cortical layer of radially arranged oxe^. 

 C. voeltzkoivi Lendenfeld [7] . P- loi, pi- ix-, fig. 35-53> ^'^ll^^^^ 

 zibar is a spherical free sponge with numerous o/^^'ar dof ^^^^ 

 with the pores generally distributed over the surface again, 7 ehUa 

 ^:tL ^endy^[2], p- 75. from the C^tilf oj Manaar Ijas nume ou 

 poral and oscular pits. The chief character of ^h^ f;^ -^""J^^^ 

 the localisation of the poral and excurrent openings e^^h in one 

 well-defined region- The pores occupy, m the ^0°^ .^^^ ^^^-^^'^^ 

 bule oval spaces bounded by the tufts of tnchodal produenes 

 and open into the distal ends of sphinctrate clones .^ich me .e 

 below into sub.cortical spaces, whence ""^^^f .^X ^p^^iXte 

 nroreed The oscular c oaca presents small circular spnicirdLc 

 rcS:Lo^peLgsonein.eaclfn.eshof^^^^^^^ 

 formed by strands of soft tissue. The generic name is su. 

 bv that of the Echinoderm genus ^^;^^;^ ^::^k^ 

 shape of the shell with its mouth and "/a^l^P^" fehrist 

 of the sponge. The species is named after Dr. Gilchrist 



