342 



THETIS SCIENTIFIC RESULTS. 



Family AMPHIPERASID^. 



PEDICULAR I A, Swainson. 



PEDICULARIA STYLASTERIS, sp. nov. 



(Figs. 69, 70.) 



Stations 44, 48. 



Shell variable in shape, according to the in egularity of the 

 perch. Colour rose-pink. Sculpture : on the earlier convolute 

 whorls are fine spiral threads obliquely cut by growth lines, upon 

 the compressed sides are coarser and more distant spiral threads. 

 The apex is conical, five-whorled, with the usual cancellate sculp- 

 ture, completely buried in the adult shell. Aperture roughiy 



Fig. 69. 



oblong, irregularl}' lobed, with an anterior and posterior canal 

 more or less developed. Columella expanded, longitudinally 

 ribbed, anteriorly with a deep set line of denticles ; just within 

 the anterior margin is a muscle scar. Length of aperture, 6 mm., 

 breadth, 3 mm. ; height from back to base, 4 mm. 



This shell, representing a genus new to Australia, occurred on 

 branches of Stylaster sanguineus, Val. (fig. 70), obtained oft" 

 Wollongong at a depth of 55-66 fathoms, and again off" Coogee 

 in 49-50 fathoms. Mr. H. Mort has shown me a specimen he 

 collected on the beach at Long Bay, near Sydney. The removal 

 of a Pedicularia from a branch of Stylaster exposes a shallow 



