374 Mr. T. A. Verkriizen on a 



Littorina ohtusata, var. 2, middle olive. Similar to last. 



, var. 3, light olive. Not quite so plentiful. 



., var. 4, yellow. Scarce. 



The olive varieties have purple or plum -coloured throats ; the 



yellow varieties have yellow throats. 



, var. 5, banded, various colours. Not common. 



, var. 6, chequered. Similar to the last. 



• , var. 7, mottled. More plentiful among the common 



coloui'S, though prettily mottled or clouded specimens are 



scarce. 



51. . rudis, Maton. Common colours. Abundant. 



, var. 1, grey. Less common, especially fine examples. 



, var. 2, white, brown throats. Plentiful, though 



fine specimens rather rarer. 



, var. 3, cream, orange throats. Eather scarce. 



-, var. 4, red. Now and then occurring. 



, var. 5, ribbed. Same as the last, amongst any of the 



varieties and type. 

 , var. 6, grey-and- white banded. Plentiful ; fine spe- 



cimens scarcer. 



, var. 7, coloured-banded. Not frequently occurring. 



, var. 8, chequered. Not frequently occurring. 



-, var. 9, mottled. Not frequently occurring. 



52. Rissoa striata, J. Adams. Perhaps about two dozen obtained, 

 mostly dead shells. 



53. Skenea jplanorbis, Fabr. Two specimens. 



54. Odostomia inscidpta, Mont. Power than Ilissoa striata. 



65. • unidentata, Mont. Only one obtained, a dead shell. 



56. Natica islandica, Gmelin. A few only (dead shells) washed on 

 shore. 



57. grmlandica (Beck), MoU. Young and middle sizes pretty 



plentiful, adults scarce. 



58. affinis, Gm. {clausa, Sowerby). Similar to the last, perhaps 



rather scarcer. 



59. Velutina Icevigata, Pennant. A few only obtained. 



60. Tricliotropis borealis, Broderip & Sowerby. Like the last ; some 

 fine specimens. 



61. Admete viridula, Fabr. About twenty dredged; mostly fine 

 specimens, my largest about 17 millims. long and 9 wide. 



62. Aporrliais pes-pelecani, L. A fragment (the spire) of one adult, 

 and four young. 



63. Purpura lapiUus, L. Common colours, plain. Very abundant 

 on piers and rocks. 



64. , var. 1, orange-colour. Occasionally met with among 



the last. 

 65. , var. 2, banded. Same as last. 



66. ■ , var. 3, ribbed. Occasionally amongst any of the 



preceding. 



67, , var. 4, imhricata, Lamarck. Rare, especially the 



fine specimens. 



