620 



PROCEEDINGS OF THE ACADEMY OF 



[Dec, 



Columbella gradata 353 



Columbellidae 351 



Commandra pallida 56 



Conidse 341 



Coniferales 19 



Conus aemulator 342 



alveatus 342 



concavitectum 341 



consobrinus 341 



cruzianus 343 



domingensis 341, 342 



gaza 342 



gracilissimus 3/ t l 



granozonatus 341 



haytensis 341, 343 



imitator 342 



molis 343 



promethus 343 



Coras medicinalis 443 



Corbula alabamiensis 337, 371 



dominicensis 371 



gatunensis 371 



gregorioi 337, 372 



heterogenea 372 



sericea 371 



(Cuneocorbula) sericea 377 



sphenia 371 



(Cuneocorbula) sphenia 377 



viminea 372 



Corbulidae 371 



Coregonus albus 551 



clupeaformis 551 



fera 551 



quadrilateralis 551 



wartmanni 551 



Coriarachne versicolor 452 



Cornicularia indirecta 447 



Cornus stolonifera 27, 35, 57, 80 



Cottus gracilis 4 



Cowania 71 



mexicana 26, 57, 81 



Crataegus oxycanthus 57, 86 



rivularis 27, 57 



Creobotrinae 326 



Crepidula plana 360 



Crepis glauca 57, 85 



occidentalis 57, 84 



Cristovomer namaycush 554 



Crotalus lepidus 232 



molossus 232 



oregonus 232 



pricei 232 



Crotophytus collaris baileyi 224 



wislizeni 224 



Crustulina guttata 445 



Cybaeus giganteus 443 



Cycadacea 17 



Cycadales 17 



Cyclinella gatunensis 371 



Cyclophoridse 575, 579 



Cyclosa conica 450 



Cyclostomatidse 576, 579 



Cymia * 338 



Cymopterus longipes 30, 57, 79 



montanus 30, 57, 96 



Cynoscion nebulosus 14 



regalis... 14,203 



Cypraea henikeni 356 



henikeri 356 



mus 356 



Cypraeidse 356 



Cyprinodon variegatus 10 



Cyprinus carpio 8 



Cystopteris fragilis 57, 88 



Cythara heptagona 345 



(Meretrix) dariena 370 



Cytherea juncea 370 



Dasyatis centroura 16 



say 16 



Dendrochiton 487 



Dendryphantes castaneus 455 



octavus 455 



Dentalium (Fustiaria) circinatum.. 167 



costaricense 1 65, 1 65 



dentale 165 



dentalis 166 



(Tesseracme) dissimile 166, 168 



(Episiphon) macilentum 166 



(Episiphon) schumoi 167 



(Rhabdus) sp 168 



Deschampsia csespitosa 57, 95 



danthonioides 58, 84, 99 



Deyeuxia canadensis 58, 80, 85 



stricta 80,85 



Delphinium bicolor 27, 57, 87, 96 



menziesi 27, 96 



Diadophis regalis 231 



Dictyna 395 



armat a 444 



foliacea 443 



sublata 443 



Dictynidae 443 



Diodon hystrix 16 



Diopatra 254 



cuprea 277 



ornata 273 



Diplocephalus carolinus 447 



rostratus 447 



Dipama nigra 445 



Dipsosaurus dorsalis 224 



Distorsio gatunensis 356 



Dixonina nemoptera 204 



Dodecathion meadia 58, 87 



Dolomedes fontanus 452 



sexpunctatus 452 



tenebrosus 411 



urinator 452 



vernalis 452 



Dorocidarus .v.. 173 



Dorosoma cepedianum 3, 211 



c. exile 211 



petenensis 211 



Dorosomatidae 211 



Dosinia 371 



