618 



PROCEEDINGS OF THE ACADEMY OF 



[Dec, 



Unio lateralis 557 



latissima - 551 



leptodon 551 



levigata 552 



lineata 558 



lineolata 553 



longa 558 



maculata 558,559 



maculatus 559 



marginata 558 



megaptera 552 



metanevra 556 



metaplata 553 



mytiloides 556 



nigra 555 



nigrescens 558 



nigrofasciata 558 



nodulata 557 



obliquata 550 



obliterata 558 



obovalis 558 



olivacea 558 



olivaria 553 



pallens 551 



pallida 558 



pusilla 555 



pusillus 555 



quadrula 556 



radiata 558 



rafinesquei 559 



reflexa 554 



retusa 556, 557 



rosea •■ 558 



rubra 557 



scalenia 555 



selenoides 556 



semiradiata 558 



sintoxia 558 



sinuata 555 



solenoides interrupta 550 



stegaria 554 



striata 55:^,559 



striatus 559 



sulcatus 550 



subrotunda 552, 558 



teres 558 



torsa 552 



torulosa 550 



triqueter 550 



Unio truncata 553 



tuberculata 554, 558 



vermiculata 558 



verrucosa 554 



viridis 554 



zonalis 558 



Upeneus maculatus 250, 257 



martinicus 257 



Vallonia albula 346 



cyclophcrella 346 



excentrica 346 



gracilicosta 346, 389, 390 



perspectiva..346, 349, 384, 390, 400 

 sonorana 345, 346 



Vertigo coloradensis arizonensis, 367, 



383 



milium 390 



ovata 389,400 



Vitrea indentata umbilicata, 344, 382; 



389, 392, 414 



Vomer setapinnis 533 



spixii 256 



Xenocara 234 



Xenochara cirrhosum 530 



Xiphidium gracillimum 105 



occidcntale 105 



o. camurum 105 



o. caudatum 105 



spinosum 1 05 



vicinum 106 



V. productum 106 



Zamenis constrictor 140 



c. constrictor 130 



flagellum 140 



Zathorax monitor 221 



nauticus 221 



Zoniopoda cruentata 285 



iheririgi 284 



omnicolor 285 



tarsata 284 



Zonitoides arborea 382 



minuscula 400,408 



m. alachuana 344, 383, 389 



singleyana 389, 399, 400 



Zungaro zungaro 209 



Zygoclistron superbum 285 



