THE NAUTILUS. 41 



Myllita inaequalis n. sp. 



Shell obovate, very inequilateral, equivalve, solid whitish, with 

 moderately convex valves, the beaks at about the posterior third, 

 not prominent; sculpture of concentric punctate strise and, toward 

 the ends of the shell, feeble radial ribs not prolonged to the medial 

 part of the disk from which they appear to divaricate; hinge as in 

 the M. Deshayesii except that the cardinal tooth is petaloid rather 

 than /\ -shaped; posterior laterals short ; the pallial line somewhat 

 sinuous or impressed anteriorly, ventral margins of the valves plain. 



Lon. 3, alt. 2 - 4, diam. 1*7 mm. 



This was received from South Australia where it was collected by 

 E. H. Matthews, Esq. It is immediately separable from any of the 

 other species of Myllita by its form and inequilateral, feebly sculpt- 

 ured valves. 



The shell of M. tasmanica contained the dried animal and a 

 multitude of minute young fry included in the parental tissues. The 

 dry foot was ligulate with a very large byssal sulcus. 



The hinge of Myllita seems quite close in its essential features to 

 that of Lascea rnbra. 



NOTE ON ISCHNOCHITON ONISCUS Krauss AND I. ELIZA- 

 BETHENSIS Pilsbry. 



BY E. R. SYKES, B. A.. F. Z. S. 



In a paper by Mr. Pilsbry 1 specimens previously recorded from 

 South Africa under the name of ' Chiton marginatus ' were described 

 as a new species under the name of Ischnochiton Elizabethensis. 

 About the same date I expressed 2 the opinion that these specimens 

 should really be referred to /. oniscus. My paper was in type when 

 Mr. Pilsbry's appeared, but I was able to call attention to his views 

 in a foot-note. 



Recently I have had submitted to me a series of specimens, care- 

 fully preserved in spirit, and have come to the conclusion that Mr. 

 Pilsbry was quite right in his separation of I. Elizabethensis, and 

 that the species I now have from Durban, Isipingo, and Umkomaas 



NAUTILUS, viii, p. 9 (May, 1894). 

 2 Proc. Malac. Soc., i, p. 133 (June, 1894). 



