SPONGES.-HALLMANN. jg- 



Microsclercs. — 



(i.) Chelae, 19-26;/ long. 



(ii.) Toxa, 60-80 x 2-2]i. 



The megascleres exhibit the basal spination more com- 

 monly than do those of the typical variety. Practically all the 

 auxiliary and special dermal styli are thus provided,' as well 

 as a considerable proportion of the principal styli. The 

 acanthostyles are usually more or less deficient in spines over 

 part of their proximal moiet}-. 



l.ocs. — Coast of New South Wales off Botany Bay, 

 20-23 i"is. ("Thetis"); Shoalhaven Bight, 15-45 fms. 

 ("Endeavour"). 



Rhaphidophlus tvpicus, Carfcr, et varr. 



(Plate xxvii., PL xx\iii., figs. 1-4, PI. xxix., and figs. 38-42.) 

 (a) Typical Variety. 



1875. Echinonema ty^icum. Carter, Ann. Mag. Nat. Hist. 

 (4), xvi., 1875, P- 195- 



1881. Echinonema typicum, Carter, Op. cit. (5), \ii., 1881, 

 P- 378. 



1896. Clathria typica (pars), Dendy, Proc. Roy. Soc. \'ict., 

 viii. (n.s.), i8g6, p. i,-- 



[1904. Not Clathria typica, Kirkpatrick, Marine Investiga- 

 tions in South Africa, ii., 1904, p. 148.] 



(b) Var. PROXIMTS, var. }wv. 



(c) I'ai'. GEMixus, var. nov. 

 (d) Var. BREVISPINUS, LendenfeJd. 



1888. Thalassodendrou brevispiria, Lendenfeld, Austr. Mus. 



Cat. Sponges, 1888, p. 225. 

 1901. Tlialassodendron hrevispina, Whitelegge, Rec. Austr. 



Mus., iv., 2, 1901, p. 87. 



(f) ]'ar. ANCHORATUS, Carter. 

 1881. Echiiiouema anchoratiun. Carter, Ann. Mag. Nat. Hist. 



(5)' ^"ii-, P- 379- 

 1885. Echinonema flabeUiforniis, Carter, Op. cit. (5), xvi., 



1885, p. 352. 

 Ecliinonema pectiniformis, Carter, Loc. cit., p. 353. 

 ]S86. Phakellia ventilabrum, var. australiensis, Carter, Op. 



cit. (5), xviii., 1886, p. 379. 

 1S96. Clathria typica (pars), Dendy, Proc. Roy. Soc. \'ict., 



viii. (n.s.), p. 32. 

 [1888. Not Echinonema anchoraium, Lendenfeld, Austr. 



Mus. Cat. Sponges, 1888, p. 219.] 



