New and H<tre Fossils. 181 



KCHIXOIDKA. 



■ riDAK'OIDA. 



Kain. (MDAinDAE. 



Genus (^OXIOCIDAKIS, Dosor. 



GoNOiciiJAius sp. (Plate XVII , Fig. 22). 



Ohs(iraf/o/is. — Aiiiiiugst other eidaroicl spines oecurring here 

 there is a small spine differing from those of the living G. tuharia, 

 Lam. sp.l in having the shaft hour-glass shaped, smooth, with blunt 

 <\pical tubercles; whereas those in G. turhnria are always more or less 

 flattened, and tubercular along the shaft, excepting in the case of 

 the secondary spines, w'hich are longitudinally serially granulate. 

 From Leiocidaris it differs in the clavate form of the spine. 



(roniocidaris (misprinted " Gomocidaris ") is recorded by Tate 

 in his " Census of the Older Tertiary Fauna of Australia. ''2 



Dimensions. — Length, 8 mm.; greatest width at about one-tliird 

 from the base, 3.1 mm. 



Occurrence. — Bore 11, S'jO-oSo feet. 



CLYPEASTROIDA. 



Fam. FIBIILAKIIDAE. 



Genus ECHIXOCYAMTTS, van Phels. 



Sul)genus SGTTTELLINA, Agassiz. 



EciIINOCYAMUS (.SCUTKLLINA) PATELLA, Tate sp. (Plate XVIIT., 



Fig. 23). 



Ohserrnfions. — In 19(17 Di-. T. S. HalP de.sci-il)fd a Snifel/ina 

 tentatively referred to the above species, liaving a definite niarsuiiium 

 or brood pouch. This structure was new for this oi tier of eehiiidids. 

 the Clypeastroida.4 The figui-cd example came from the polyzoal rock 

 near the mouth of the Glenelg River, Victoria, and Dr. Hall also re- 

 corded other specimens obtained by him from Mount Gambler in a 

 similar rock. Amongst the score or two tests of the above species in 

 the Mallee bores collection one very fine example with a brood pouch 



1. See McCoy Prod. Zool. Vict., dec. 10, 1883, p. 33, pi. c. 



2. .loiirn. Roy. Soc. X.S. Wales, vol. x.Nii., 188!), p. ir,!. 



3. Pioc. Roy. Soc. Victoii.i, vol. xx. (N.S.), pt. ii., I(KJ7, p. 140. woodcut. 



4. H. L. Clark in his description of t'ibularia nutrieiix obtained by the "Thetis," off the cna<t 

 of N.S. Wales (Mem. Austr. Mus., No. iv., 1909, p. 557, pi. Iviii., figs. 1-11) refers to that species as 

 " the only clypeastroid known" with a niarsupiuni, hp probably not havina: seen the report i|Uote(l. 



