INDEX OF GENERA AND SPECIES. 



[Synonyms are in italics. 



Numbers in heavy-faced type indicate the pages where descriptions are to 

 be found.] 



A. 



Page. 



Acanthoffrapsus 55 



granti 56, 5S 



Acanthograptus 55, 57,61 



cbaetophorus 61, 70 



granti - . 50, 56, 57, 58, 68, 70 



multispinus 61 



pulcher 59,60,61,72 



walkeri 6,57,58,59 



C. 



Callograpsus 12 



Callograptus 12, 40, 42 



elegans 13 



granti 42 



minutus 14, 15 



minutusaltus 15 



multicaulis 13, 14 



niagarensis 1.?, 14, 59 



salteri 43 



strictus 15, 70 



Caiyptograpsus 38 



micronematodcs 39 



subretifonnis 26 



Calyptograptus 28, 38. 41 



cyathiformis 27, 28, 38, 39 



micronematodcs 89, -10 



(?) radiatus 40 



subretijormis 24, 26 



subretiformis 25, 26, 27, 28 



Cyclograptus 44 



rotaden tatus 5, 45 



D. 



Dendrograpsus 5, 56 



Dendrograptiis 5, 13, 61 



dawsoni 6 



dubius 6,7 



f rondosus 6, 8 



fruticosus 7 



ontaricnsis 12 



ontarioensis 12, 66 



phainotheca 9, 11, 68 



praegracilis 6, 9, 12, 68 



(?) problematicus 6, 10, 66 



ramosus 6, 7, 8, 66 



simplex 7 



spinosus 0, 10 



Desmograptus 24, 26, 35 



Page. 



Dictyonema 13,14,17,18,28,38,41,42 



crassibasale. . 19, 20, 21, 22, 23, 29, 33, 70 



desmoides 34, 35, 72 



e.xpansum 31, 32, 33 



filiramus 34 



gracile 23, 26, 31 



gracilc 19, 23 



gracilis 19 



gracilis 29 



grandc 19 



parallelum 37,72 



percrassus 31, 35, 36 



polymorphum ... .5, -24, 25, 26, 28, 30, 72 



retiforme 5, 18, 19, 20, 26, 31 



retijormis 18 



spencer! 36, 37, 72 



splendens 23 



.stenactinotum 30, 70 



subretif orme 5, 26, 27 



tenella 28 



tenellum 2.5,28,29,68 



tenellum 24 



websteri 31 



Dictyograptus 17 



G. 



Gorgonia' rctt'formis 18 



Graptolithus hallianus 5 



I. 



Inocaulis 46,56 



bellus 52 



cervicomis 50, 51 



congregatus 54 



diffusa 52 



diffusus 52,53, 54 



diffusus crassiramiis 53,74 



phycoides 51,55 



phyocidcs 51 



(?) prohleviatica 10 



plumnlosa 46 



plumulosa 63 



plumulosus 5, 46, 47, 48, 50, 51, 52. 58 



ramulosa 49 



ramulosus 49,50 



(?) strictus 54,68 



(?) thallosus 55.68 



vegetabilis 55,74 



walkeri 54, .56, 61 



walkeri 57 



75 



