124 GENERA AND SPECIES. 



Lassea. (ERYCINID^.) Plate vii. 



75. rubra, J in. x^ in. white, tinged with red. 



There is a variety of this pallida which is tinged with yellow instead of red. 



Leda. (NUCULID&.) Plate i. 



5. pygmeea, ^ in. x^in. teeth like those of a comb, shell smooth 



and swollen. 



6. lucida, | in. xfy in. teeth like those of a comb, shell ribbed and 



thin. 



7. minuta, in. x J in. teeth like a herring bone, shell with about 



30 transverse ribs, posterior slope with 2 

 ridges. 



8. permila, Jin.xf in. teeth like a herring bone, posterior slope, 



slight and having 3 ridges. 



Lepeta. (LEPETID^E.) Plate xxi. 



322. caeca, J in. white outside and inside, central scar dis- 



tinct. 



Lepton. (ERYCINIDM.} Plate vii. 



76. squamosum, J in. x f in. shell pitted, scars indistinct. 



77. nitidum, ^ in.Xj^in. shell pitted, scars distinct. 



78. sulcatulum.^m.x^in. shell grooved, hinge plate broad, faintly 



excavated. 



79. darkies, ^ in. x^ in. shell grooved, hinge plate narrow, deeply 



excavated 



Lima. (LIMIDM.) Plate v. 



46. subauriculata, ^ in. x^ in. shell equilateral, with 24 ribs. 



44. sarsii, ^in. xjin. shell equilateral, with 25 to 30 ribs, beaks 



small. 



45. elliptica, ^ in. x^in. shell equilateral, with 30 to 40 ribs, beaks 



prominent. 



47. loscombii, ^ in. xf in. shell inequilateral and oblique, with 50 to 



60 ribs, hinge nearly straight. 



48. hians, i in. x ij in. shell inequilateral and oblique, with 50 to 



60 ribs, hinge line much curved. 



Limapontia. (LIMAPONTIIDM.) Plate xxxi. 

 589. nigra, ^ in. head truncated in front. 



depressa, f in. head rounded in front. 



Limax. (LIMACIDJS.) Plate xviii. 



234. flavus, animal 4 in. thick, rather square, yellowish, spotted with 

 blackish-brown ; head and tentacles grey ; 

 shell in. long by J in. broad; shield 



4 marked with granules. 



