A2TD MAEDTE SHELLS PBOM NOSTH-EAST AUSTEALIA. 33 



This fine species I obtained at a depth of 18 fathoms, brought 

 up on a piece of Retepora taken off a rocky bottom. I have 

 named it after Mr. Silvester Diggles, author of a work on Aus- 

 trahan Ornithology, and one of the observing party of the Eclipse 

 Expedition from Queensland. 



* 10. COLTJMBELLA (AlTACHIS) GOWLLANDI. 



Shell oblong ovate, rather thickened, horn yellow, longitudinally 

 ribbed as far as the centre of the last whorl ; below obliquely 

 striated, ribs rounded and smooth, interstices smooth, whorls 8, 

 moderately convex, encircled with a reddish band on the centre of 

 the whorls ; on the last two bands appear, one on the centre and 

 one below, grained at the suture, interstices smooth, apex acute, 

 very smooth, aperture ear-shaped, short, outer lip thickened, 

 smooth, columellar curved, coated with callus, upper part with a 

 denticulation of callus spreading out towards the outer lip, lower 

 part strongly obliquely ridged, canal short straight. 



Length 2 J, breadth 1 lin. 



Hab. No. 6 or Eclipse Island, Claremont Q-roup, north- 

 east coast of Australia, under stones. (Coll. Brazier.) 



Of this species I obtained three specimens at the above 

 locality, and when visiting the Solomon Islands in 1872 in H.M.S. 

 " Blanche," I collected four specimens at Makera Harbour, San 

 Christoval. It comes near to Golumhella atrata, Gould, G. lenti- 

 ginosa, Hinds, two Port Jackson species, and G. troglodytes and 

 regulus, Souverbie, from New Caledonia. 



* 11. LlOTIA GOWLLANDI. 



Shell solid, depressedly orbicular, white, obliquely rugose, 

 interstices smooth, whorls 5, the last very large, grooved 

 spirally at the periphery, and above and below it, giving the shell 

 the appearance of three granulated spiral ribs, suture depressed, 

 smooth, apex acute, smooth, base rounded, ribbed, umbilicus 

 moderately large, encircled by a spiral rib, aperture oblique, 

 circular, lip continuous, white, thickened. 



Diam. maj. li, min. 1, alt. f lin. 



Hab. Percy Island No. 2, north-east coast of Australia ; 

 found under stones. (Coll. Brazier.) 



This charming species approaches near to Liotia speciosa, 

 Angas, from Port Jackson. I obtained six specimens during a 

 stay of two hours only at the Percy Island. 



The species marked vrith an asterisk I have deposited in the British 

 Museum. 



