BY C. HEDLEY. 423 



mouth of the Bloonifield River. I had previously taken it, in 

 15 fathoms, off the Pahii Islands. 



Arca AVENDTi Lamy. 



A. wendti (SchmeUz) Lani}^ Journ. de Conch. Iv. 1907, p.45, 

 Pl.i., f.ll, 12,13. 



A considerable nnmber of disassociated valves occurred of this 

 small and recently described shell, which is new to Australia. 

 It is conspicuous from the bright primrose-yellow blotches. The 

 largest of my series is only 5 mm. long, half the size of the type. 



Glycymeris pectunculus Linne. 



Arca pectniiculus Linne, 8ysr,. Nat. x. 1758, p. 695; id., Hanley' 

 Ips. Linn. Conch. 1855, p 98. Pectu7icidics pectinijorniis Reeve, 

 Conch. Icon. i. 1843, PI. iii., f.ll. 



A few separate valves from the Hope Islands are the first 

 notice of this species from Australia. 



Pectkn MALDiVENSis Smith. 



Pecten maklivensis Smith, Fauna Maldive and Laccadive 

 Archipel., ii. 1904, p.622, Pl.xxxvi., f.19,20. 



I am indebted to Mr. C. J. Gabriel for identifying Hope 

 Island specimens with the type in the British Museum. The 

 species is new to the Australian fauna. 



Chlamys corymbiatus, n.sp. 



(Plate xxxvi., figs. 1-4.) 



A species of the ^quipecten group, small, solid, inflated, 

 almost equilateral, scarcely gaping, left valve shallower. Colour 

 ochraceous mottled witli opaque white and chestnut-brown. 

 Sculpture: eighteen prominent ribs parted by deep grooves, the 

 latter densely latticed by thin produced lamellye. Each rib is 

 tripartite and decorated by small epidermal blisters which resolve 

 into a median, lateral and connecting series. The median and 

 lateral blisters assume the form of imbricating scales, the inter- 

 mediate ones are like berries. For a space at each side the ribs 



