14 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 95 



furrow. Deep marginal furrow extends all around the cephalon, being 

 interrupted only at the genal angles. Two short diverging furrows 

 cross the preglabellar area, joining the dorsal with the marginal fur- 

 row, thus making a distinct lobe anterior to the glabella. Eye ridges 

 faint. 



Thorax of 15 segments, with blunt tips. Pygidium fused, trans- 



Comparisons. — Since Conocoryphc is the type of family, compari- 

 sons of the other genera will be made with it. 



Genotype. — Trilobites sidzeri Schlotheim. 



Range. — Middle Cambrian of the Atlantic Province, associated with 

 Paradoxides. 



Species formerly referred to Conocoryphc are now referred as 

 follows : 



C. ahdita Salter ^ Conokephalina 

 C. adavisi Miller ^ Ptychoparclla 

 C. aequalis Linnarsson = Bailiella 

 C. applanata Salter =: Solenopleura 

 C. baileyi Hartt = Bailiella 

 C. brachymetopus Linnarsson = 



Solenopleura 

 C. breviceps = Dasometopus 

 C. bucephala Belt = Beltella 

 C. bufo Hicks = Bailiaspis 

 C. bullata Howell = Bailiella 

 C. coronata Barrande ^ Ctcnocephalus 

 C. dalmani Angelin = Bailiaspis 

 C. cf. dalmani Nicholas = Bailiaspis 



nicholasi 

 C.ci. dalmani S]rdgren = Bailiaspis 



emarginata 

 C. elegans Hartt =: Bailiaspis 

 C. emarginata Linnarsson := Bailiaspis 

 C. emarginata longifrons Cobbold = 



Bailiella 

 C. exsidans Linnarsson = 



Ctenocephalus 

 C. frangtengensis Reed = Bailiella 

 C. gallatinensis Meek = Ehmania 

 C. geminispinosa Miller =z 



Ctenocephalus 

 C. glabrata Angelin := Bailiaspis 

 C. granulaia Corda = Conocoryphc 

 C. heberti Munier-Chalmas and 



Bergeron ^Bailiella 

 C. heberti pseudoculata Miquel = 



Bailiella 



C. homfrayi Hicks = Ptychoparia 

 C. humerosa Salter = Conocoryphe? 

 C. imprcssa Linnarsson = Bailiella 

 C. invita Salter = Conokephalina 

 C. kingii = Elrathia 

 C. lantenoisi Mansuy = Bailiella 

 C. laticeps Angelin = Ctenocephalus 

 C. latifrons Corda = Conocoryphe 

 C. Icvyi Munier-Chalmas and 



Bergeron == Bailiella 

 C. ? longispinus Belt = Olenus 

 C. lyelli Hicks ^ Bailiella 

 C. malverne^isis Phillips =^ Peltnra 

 C. matthewi Hartt ^ Ctenocephahis 

 C. inutica Corda = Conocoryphe 

 C. perdita Hicks = Undeterminable 

 C. punctata Corda = Conocoryphe 

 C. pustulosa Matthew ■= Caintops 

 C. qiiadrans Miller = " Ptychoparia " 

 C. reticulata Walcott = Atops 

 C. rouayrouxi Munier-Chalmas and 



Bergeron =: Solenopleura ribeiro 

 C. tenuicincta Linnarsson =1 Bailiella 

 C. teres Gronwall ^ Bailiella 

 C. trilineata Ford = Atops 

 C. ? variolaris Salter z=z Solenopleura 

 C. (Erinnys) venulosa Gronwall = 



Bailiella 

 C. viola Woodward = Genus 



indeterminate 

 C. zualcotti Matthew = Bailiella 

 C. williamsoni Salter r= Beltella 



bucephala 



