SPONGES.-HALLMANN. 



285 



r^ 



surface) present their edges to the exterior, the principal styli 



(although in some instances rarely exceeding i30|f in length) 



are in no case less than 145 x 9 ji in 



size; only a very sm^ll proportion of the 



auxiliary styli are basally enlarged, and 



the chelffi are never more than 13 }'. 



long. 



These specimens were obtained by the 

 "Thetis" Expedition and were recorded 

 — an inexplicable error — as Echino- 

 cJathria macropora (= E. ramosa, nom. 

 nov.). They differ externally from 

 specimens of the latter species in their 

 relatively few and elongated branches, 

 which in one case reach a length of 400 

 mm. Owing to incompleteness, none 

 of them affords any clue as to the mode 

 of fixation, whether by means of a stalk 

 or otherwise. A single small specimen 

 (obtained by the "Endeavour") encrust- 

 ing, and growing between, the lower 

 portions of the branches of a horny 

 coral, agrees perfectly in skeletal char- 

 acters with the "Thetis" specimens. It 

 would appear, therefore, that this 

 species, like E. faviis, is of variable 

 habit. 



Fig. 65 — E. carteri. 

 a Principal style, b 

 Auxiliary tornostron- 

 gyle. c Isochela^pal- 

 mata. 



Locs. — Neighbourhood of Port Jack- 

 son, 15 to 52 fms. ("Challenger," 

 "Thetis"); Shoalhaven Bight, 15 to 



45 fms. ("Thetis," "Endeavour"); south-east Australia, 120 

 fms., and Bass Strait, 38 fms. ("Challenger"). 



EcHiNOCLATHRiA GiGANTEA, Lcndenfeld. 



1886. Halme gigantea, varr. macropora, intermedia, et 

 micropora, Lendenfeld, Proc. Linn. Soc. New South 

 Wales, X., 1886, p. 847. 



1888. Aulena gigantea, varr. macropora, etc., Cat. Sponges 



Austr. Mus., 1888, p. 228. 



1889. Aulena gigantea, varr. macropora, etc., Lendenfeld, 



Alonograph of the Horny Sponges, 1889, p. 97, pi. 



viii., figs. 3, 4, 7, 8, 18, 19; pi. ix., figs. 2-4. 

 1901. Aidena gigantea, var. micropora, Whitelegge, Rec. 



Austr. Mus., iv., 2, 1901, p. 93, and p. 118. 

 1907. Aulena gigantea, var. micropora, Whitelegge, Mem. 



Austr. Mus., iv., 10, 1907, p. 504. 



