DESCRIPTION OF A NEW SPECIES OF FOSSIL 

 LORICELLA (ORDER POLYPLACOPHORA) . 

 WITH REMARKS ON SOME UNDESCRIBED CHARAC- 

 TERS PRESENT IN LORICELLA ANGASI, AD. 

 AND ANG., AND L. TORRI, ASHBY. 



By Edwin Asuby, F.L.S., M.B.O.U. 

 (Communicated by C. E. Lord.) 



Plate XV. 



(Read 11th July, 1921.) 



Mr. E. D. Atkinson, who for many years was resident 

 at Sulphur Creek, North- West Tasmania, early in Septem- 

 t)er last, sent me a very beautiful valve of a Chiton which 

 he had obtained at Table Cape, a locality that has yielded 

 to him and his son many fine forms of fossil mollusca. Three 

 species of Loricella from the same locality, and the result 

 of the joint work of the two, were described by Mr. A. F. 

 Basset Hull (in Proc. Lin. Soc. of New South Wales, 1914, 

 Vol. XXXIX., Pt. 4). Since receiving the specimen herein 

 described from Mr. Atkinson, he has passed away. He was 

 an assiduous collector, and many fine forms have been dis- 

 covered as a result of his earnest labours, and we all owe 

 a debt to his memory. 



Mr. Hull, in the paper before mentioned, comments on 

 the large number of species belonging to the genera Lori- 

 cella and Lorica represented in the Table Cape deposits, and 

 the apparent dwindling of species in recent times. He states 

 that the genus Loricella "is represented by a single living 

 ■"species," and, speaking of the genus Lorica, which also is 

 well represented in the same beds, he says "one only Lorica 

 ^^volvox, Reeve, is still extant." 



Since Mr. Hull wrote thus, three living forms of this 

 latter genus have been recognised, two of which are Aus- 

 tralian, and one from New Zealand, also a second species 

 of Loricella has been described by the writer, who, in addi- 

 tion, foreshadows the probability of yet another species being 



