330 



THETIS SCIENTIFIC RESULTS. 



lengths. On the base there are about twenty-five coarse, widely- 

 spaced radii, most prominent around the umbilicus, which they 



enter. On the outer circumference 

 of the base are interstitial radii, 

 crossed by half-a-dozen spiral threads. 

 Fascicle enfolded by broad margins. 

 Height, 2 5 mm. ; major diam., 3*0 

 mm. ; minor diam., 2*5 mm. 



The novelty is similar in size, shape 

 and general appearance to Scissurella 

 cequatoria, Hedley,* but differs by 

 having the base sculptured by a few 

 distant coarse radii instead of dense 

 fine riblets. The lip of S. australis 

 does not project in a lobe over the 

 base like that of i!?. cequatoria. 



My material is too scanty to pro- 

 nounce on the persistence of these 

 features and their systematic value. 

 In the Australian Museum is 

 an imperfect specimen of a fossil 

 Scissurella from Muddy Creek, 

 apparently identical with S. australis. 

 A few imperfect specimens were obtained in 63-75 fathoms off 

 Port Kembla. 



Fig. 63. 



Fa7}nhj FISSUKELLID^. 

 PUNCTURELLA, Lowe. 



PUNCTURELLA HARRISSONI, Beddome, sp. 



Cemori harrissoni, Beddome, Proc. Roy. Soc. Tas., 1882 (1883), 

 p. 168. 



Puncturella henniana, Brazier, Proc. Linn. Soc. N.S. Wales, (2), 

 ix., 1894, p. 177, pi. xiv., f. 14. 



Station 13. 

 One specimen from 41-50 fathoms off Cape Three Points. 



Hedley— Mem. Aust. Mus., iii., 1899, p. 551, f. 61. 



