104 



Dredged in life from 20 fathoms in Encounter Bay (B. H. 

 JPulleine /) ; cast up at Ardrossan and Edithburg. Also Bass 

 Sraits in 38 fathoms {Challenger Exped.). 



Transversely ovate, oblique, cancellate ornament, reddish- 

 brown, dirty-white or yellowish about the umbos, clothed with 

 a thick pilose epidermis ; length, three-fourths inch. 



137. Limopsis Belcheri, Adams and Eeeve, Voy. Samarang, 

 t. 22, f . 5 ; id. McCoy, Pal. Victoria, Decade II., 1. 19, figs. 8-9 ; 

 L Tenisoni, Tenison-Woods, Proc. Eoy. Soc, Tasm., 1877 ; 

 L. cancellata, id. 1876 (non. Reeve) ; L. Ilacgillivrayi, Angas, 

 P. Z. S., 1878, p. 871. 



Eobe and Guichen Bays in a fresh state ; dead shells St. 

 Vincent Gulf and Kangaroo Island. Also Port Phillip {McCoy) ; 

 Tasmania {Tenison- Woods) . 



A common fossil in the Pleistocene beds of the Port Ade- 

 laide Creek, and in Older Tertiary beds Eiver Murray Cliffs, 

 Muddy Creek near Hamilton, &c. 



Orbicular, slightly oblique ; radiately ribbed and with wavy, 

 close, concentric lirae ; the ligamental pit is much smaller and 

 the hinge teeth (about 24) more numerous than in L. Bassii. 



138. Limopsis rubricata, Tate, antea, p. 71, t. 5, f. 6. 

 Dredged in life from 32 fathoms, Backstairs Passage. 



A minute shell, radiately finely sulcated, concentrically 

 striate, with four chesnut-coloured rays, covered with a thin 

 light-horn epidermis. 



FAMILY MYTILIDjE. 



Genus Mytilus. 



(a) With longitudinal furrows. 



139. Mttilus hirsutus, Lamarck, An. s. Vert., vi., p. 120 ; 

 id., Eeeve, Mon., t. 3, f. 8. 



At various stations from the Great Bight to Port Lincoln ; 

 Port Broughton and Wallaroo ; Kangaroo Island ; Port Ade- 

 laide Creek ; also Tasmania, Xew South AVales, Japan, and 

 China. 



Strongly curvated ; dark brown, ornamented with very fine 

 closely-set dichotomous riblets, and covered with long, barbed 

 hairs. Length, two and a-half inches. 



140. Mttilus rostratus, Dunker, Proc. Zool. Soc, 1856 

 p. 358. 



Great Australian Bight ; Edithburg ; Encounter and 

 Guichen Bays ; also Tasmania (type). 



Elongate, nearly parallel sided, attenuated towards the 

 beaks; reddish-purple, ornamented with fine closely-set divaric- 

 ating riblets. Attains to one and a-half inches long. 



