1917.] 



NATURAL SCIENCES OF PHILADELPHIA. 



377 



Typhis linguifcrus 34 



Typhlomolge 13-15 



rathbuni 19 



Typhlotriton 13-15 



speliEUs 23 



Umbra pygmaea Ill, 124 



Umbraculum sinicum aurantia- 



cum 214 



Umbrina cirrhosa 277 



coroides 133 



Upeneus maculatus 133 



Vallonia c}^clophorella..53, 54, 57, 69, 81, 



105 



gracilicosta 64, 71 



perspectiva 105 



Valvata humeralis califoriiica 56-58 



h. sincera 74-76 



sincera 73 



utahensis 57, 58, 73, 75 



Vasum pugnus 167 



Venericardia aversa 196 



santodomingensis 197 



Vertigo coloradensis arizonensis. . 104 



corpiilenta 67 



modesta 104 



m. parietalis 54, 67 



ovat a 58 



Vitrea hammonis 75 



Vitrina alaskana ...53-55, 62, 64, 65, 71, 



103 



Volvatella fragilis 214 



Volvula cylichnoides 151 



ornata 151 



parallela 151 



Vomer setapinnis 132 



Vostox brunneipennis 243 



Xancus rex 167 



Yoldia pisciformis 38 



Zonitoides arborea..53, 54, 58, 62, 71, 75, 



103 



minuscula alachuana 103 



nitida 51 



