428 MOLLUSCA FROM THE HOPE ISLANDS, N. QUEENSLAND, 



however, always feebler than in related forms. Off the Hope 

 Islands, in 5-10 fathoms, it was abundant. 



MyRT^EA DESIDERATA Smith. 



Liiciyia {Loripes) desiderata Smith, Chall. Zool. Rep. xiii. 1885, 

 p.l85, PI. xiii., f.lO. 



Numerous valves, both double and single, were dredged in 

 5-10 fathoms. This is the first note of the species east of Torres^ 

 Strait. 



Sportella jubata, n.sp. 

 (Plate xxxvii., figs.22-23.) 



Shell of moderate size, solid, inflated, rather glossy, inequi- 

 lateral, subrhomboidal. Colour white. Sculpture : extremely 

 fine radiating threads, which increase by intercalation, the median 

 and lateral threads diverging on either side at an acute angle. 

 A few spaced growth-lines intersect the radials. Length 8*5; 

 height 6; depth of single valve 2 mm. 



A couple of odd valves, from 5 to 10 fathoms, represent this- 

 species. 



Sportella sperabilis, n.sp. 



(Plate xxxvi., figs. 13-15.) 



Shell small, rhomboidal, compressed, opaque, solid for the size» 

 Colour white. Prodissoconch distinct, smooth. Sculpture : fine 

 regular radiating riblets commence at the prodissoconch-suture a& 

 slender threads, diverge and strengthen with growth, a few fork. 

 Those ventrally directed attain the margin, but the lateral onea 

 vanish before reaching the edge. Inner ventral margin denticu- 

 lated by the sculpture. Length 2; height 2; depth of singel valve 

 0*5 mm. 



A few separate valves occurred. In the selection of the genus,, 

 not hitherto recorded from Australia, I have been guided by the 

 apparent relation of m}^ shell to S. oholus Dall."^ 



* Trans. Wagner Inst. Sci. iii. 1900, p. 11 26, PI. 44, f.l8. 



