62 



in which all the valves except 2 and 8 are rosy-pink ; valves 

 2 and 8 are greyish, and only tinged with pink; the girdle is 

 rosy-pink, except where it is opposite valves 2 and 8, where 

 it is blotched grey and white. The characteristic spicules, 

 before described, are present in all my South Australian 

 specimens. The sculpture in the smaller one is subpustulose 

 in some of the ridges, especially the anterior margin of the 

 lateral areas; the posterior margin is more strongly toothed 

 than is the case with the larger specimens. Dr. Torr has 

 several of the smaller size that show the same pustulose charac- 

 ter in the sculpture. A specimen 30 mm. in length, dredged 

 in St. Vincent Gulf, exhibits the same "spear-headed" hairs, 

 and a small one, 23 mm. long, preserved in spirit, collected 

 at Aldinga Bay, has the girdle well clothed with hairs 

 terminating in similar "spear-head" spicules. 



Remarks. — All specimens examined, collected by Dr. 

 Torr, Dr. Verco, and myself, show the "spear-headed" spicules, 

 and none of those examined from the other States exhibit this 

 character. 



LOEICELLA TORRI, n. Sp. 



Differs from Loricella angasi, H. Adams and Angas, in 

 that the white, "spear-headed" spicules on the girdle, and 

 attached to the coarse hairs in that species, are absent in this. 



The coarse hairs on the girdle are branching, and are, 

 where perfect, transparent at their apices, but the transparent 

 portions are the same width as the hairs and evidently the 

 growing points thereof, and are very different from the broad, 

 "spear-head" processes of Loricella angasi. The Sydney shell 

 shows more raised and stronger ribbing. The anterior valve 

 has' 8 or 9 distinct rays, or coarse ribs, in addition to the 

 closely-packed wavy ribbing. In one specimen in my collec- 

 tion from Sydney Harbour, the closely-packed wavy ribbing 

 is almost absent, and in this one the ray ribs on the anterior 

 valve, and the anterior and posterior margins of the lateral 

 areas, consist of rows of elevated pustules, I think it possible 

 that this character is more or less common to all juvenile 

 specimens from New South Wales, and that with age these 

 prominent tubercles are either eroded or absorbed. All the 

 specimens that have come under my notice are more olivaceous 

 than the South Australian shell. 



Habitat. — The type I collected in shallow water at low 

 tide at the Quarantine Station, Sydney, New South Wales, 

 in November, 1918. I am presenting same to the South 

 Australian Museum. It appears fairly common at Port 

 Jackson, and frequents much shallower water than is the case 

 with the South Australian species. I actually found one on 

 a large rock several feet above low-water mark. I have one 



