IO4 



NEW YORK STATE MUSEUM 



Lacuna, 14*. 



divaricata, 14". 



pertusa, 14. 



vincta, .14. 

 Laevicardium mortoni, see Cardium 



(Laevicardium) mortoni. 

 Lamellaria, 9". 



glabra, g\ 



pellucida, 9*. 

 Lamellariidae, 9". 

 Lampsilis, 80. f- 



alatus, 84 3 . 



anodontoides, 82*. 



borealis, 82 2 . 



cariosus, 8o 8 , 8i 2 . 



ellipsiformis, 83". 



gracilis, 84. 



iris, 83 5 . 



laevissimus, 84 7 . 



leptodon, 84. 



ligamentinus, 82*. 



luteolus, 8i 6 . 

 var. rosaceus, 8i 8 , 82 1 . 



multiradiatus, 81. 



nasutus, 83 2 . 



ochraceus, 81*. 



parvus, 84 1 . 



radiatus, 82*. 



rectus, 82 8 , 83 1 . 



siliquoides, 8i 6 . 



subrostratus, 83*. 



ventricosus, 8o 7 . 

 Leda, gouldi, 94'. 



limatula, 94*. 



sapotilla, 95*. 



thraciaeformis, 95*. 

 Leucochila armifera, 45*. 



contracta, 45*. 



corticaria, 44 T . 



fallax, 4i 7 . 



rupicola, 45'. 

 Limacidae, 47*. 

 Limax, 47 2 . 



agrestis, 48 T . 



campestris, 49 1 . 



flavus, 47*. 



maximus, 47 2 . 

 Limnaea ampla, 52*. 



appressa, 51'. 



auricularia, 52*. 



Limnaea caperata, 55*. 



catascopium, 55*. 



columella, 52'. 



desidiosa, 54*. 



elodes, 54 1 . 

 var. catascopium, 55*. 



emarginata, 54". 



fragilis, 53 8 . 



gracilis, 56 6 . 



humilis, s6 2 . 



jugularis, 5i 8 . 



linsleyi, 56*. 



megasoma, 52, 53*. 



pallida, 55 8 , 56 1 . 



palustris, 53*. 



reflexa, 53*. 

 umbrosa, 53 6 . 



stagnalis, 51", 52*. 



umbilicata, 55*. 



umbrosa, 53 7 . 



See also Lymnaea. 

 Limnaeidae, 5i 8 . 

 Limnaeinae, 51". 

 Limnea, see Limnaea. 

 Limnophysa catascopium, 55". 



desidiosa, 54. 



elodes, 54 2 . 



emarginata, 54. 



humilis, 56*. 



pallida, 56 1 . 



palustris, 54*. 



reflexa, 53*. 



umbilicata, 55*. 



umbrosa, 53. 

 Lioplax, 24 T . 



subcarinata, 24 T . 



subcarinatus, 24". 

 Lithoglyphinae, 22 1 . 

 Littorina, 13*. 



irrorata, 13*. 



littoralis, 14*. 



littorea, 14*. 



palliata, 14*. 



rudis, 14*. 

 obligata, 14*. 

 tenebrosa, 14*. 



tenebrosa, 14*. 

 Littorinidae, 13*. 

 Loliginidae, 3*. 



