126 MITRELLA. 



C. TICAONIS, Sowerby. PI. 48, fig. 95. 



Shell ovate, turgid in the middle, with moderate spire, spirally 

 striated ; longitudinally marbled with pale 3 r ello wish and chestnut ; 

 outer lip thickened externally, its edge thin, with a few small 

 denticles within. Length, 11 mill. 



/. Ticao, Philippines; at 7 fathoms in sandy mud (H. Cuming). 



" A bright, richly painted shell, rather more attenuately 

 restricted at the base than is usual in this genus." Reeve. 



I am not acquainted with this species. 



C. DICTUA, Tenison-Woods. PI. 48, fig. ',)<;. 



Shell small, narrowly ovate, with acute spire, shining ; closely 

 angularly reticulated with yellow and brown, forming acute zigzag 

 markings of equal width ; aperture ovate, wide in front. 



Length, 9 mill. 



N. Tasmania. 



The form is like a very small C. semiconvexa; there are no 

 spots or cloudings of any kind. The species has not been here- 

 tofore figured ; I am able to give an illustration from a specimen 

 kindly communicated to me by Mr. C. E. Beddome of Hobart 

 Town. 



C. AUSTRALIS, Gaskoin. PI. 49, figs. 97, 98. 



Shell fusiformly oblong, fulvous reticulated and blotched with 

 chestnut, sometimes with an obscure covered broad white band at 

 the suture and a narrower one below the periphery ; body-whorl 

 contracted below, with revolving striae ; outer lip usually dentic- 

 ulated within. Length, 15-18 mill. 



New South Wales, Australia. 



It is found under stones, at low tide, in company with C. 

 semiconvexa ; from which it is distinguished b} 7 its anterior con- 

 traction and (in fresh specimens) by its epidermal frill below the 

 sutures. Sometimes the entire body-whorl is obscurely striate. 

 The variability of the species is shown by the second figure. 



C. AUSTRINA, Gaskoin. PI. 49,' fig. 99. 



Shell smooth, ivory-white, shining, with a broad red or rosy 

 band on the periphery ; lip notched above, strongly dentated 



within. Length, 13 mill. 



Australia. 

 C. ANNULATA, Reeve. PI. 49, fig. 100. 



Shell smooth, ivory-white, with a conspicuous narrow chestnut 



