no 



NEW YORK STATE MUSEUM 



Sphyradium, 33*. 

 edentulum, 33 1 . 

 Spirula, 3 9 . 



peroni, 3'. 

 Spirulidae, 3*. 

 Spisula, 67*. 



solidissima, 67*. 

 Stenotrema hirsuta, 39. 



mo no don, 39", 40 1 . 

 var. fraterna, 40*. 

 var. leaii, 40*. 

 Strepomatidae, 15*. 

 Strobila labyrinthica, 46 7 . 

 Strobilops, 46". 



affinis, 47 1 . 



labyrinthica, 46*. 



virgo, 47 1 . 

 Strophitus, 85*. 



edentula, 8s 7 . 



edentulus, 85*. 

 var. pavonius, 8s 7 , 85*. 



undulatus, 85, 86 a . 

 Stylifer, I2\ 



stimpsoni, I2 1 . 

 Stylommatophora, 27*. 

 Succinea, 49*. 



a urea, so 8 , 51*. 



avara, so 5 . 



obliqua, 49 T , 50*. 

 totteniana, so 2 . 



ovalis, 49*. 



retusa, 49*. 



totteniana, 50*. 

 Succineidae, 49*. 

 Sycotypus canaliculata, 5*. 

 Symphynota, 89. 



benedictensis, 88 1 . 



complanata, 90*. 



compressa, 89*. 

 var. plebius, 90 1 . 



costata, 9O 5 . 



viridis, 90 2 . 



Tachea hortensis, 4i 6 . 

 Tagelus, 6s 4 . 



divisus, 65'. 



gibbus, 65*. 

 Tebennophoridae, 47 7 . 



Tebennophorus carolinensis, 47*. 



48 l . 



dorsal is, 48 s . 

 Tectibranchiata, 25 T . 

 Tectura alveus, 25 T . 



testudinalis, 25 5 . 

 Tellina, 67 8 . 

 fusca, 68 5 . 

 (Scissula) iris, 68 3 . 

 (Angulus) tenella, 68 1 . 

 tenera, 67". 



tenta, 68 7 . 



(Angulus) versicolor, 68 2 . 

 Tellinidae, 67". 

 Teredidae, 64*. 

 Teredo, 64*. 



dilatata, 64*. 



navalis, 64*. 

 Thracia, 66 5 . 



conradi, 66 s . 



truncata, 66 a . 

 Torinia, io 8 . 



borealis, io 6 . 



Tornatella punctostriata, 26*. 

 Tornatellidae, 26*. 

 Tornatellinae, 26 1 . 

 Tornatina, 26*. 



canaliculata, 2&. 

 Trachydermon, 64 1 . 



albus, 64 1 . 

 Triforis, 15*. 



nigrocinctus, 15'. 

 Triodopsis fallax, 35*. 



palliata, 38'. 



tridentata, 35*. 

 Trochidae, 24*. 

 Trophon, 4*. 



clathratus, 4". 



scalariformis, 4*. 

 Truncilla, 8o 4 . 



triquetra, 8o 4 . 

 Trypanostoma pallidum, 16*. 



subulare, is 7 . 

 Turbonilla, I2 2 . 



areolata, I2 8 . 



costulata, 12*. 



elegans, I2 4 . 



grandis, I2 9 . 



interrupta, I2 a . 



stricta, I2 5 . 



