88 ROYAL SOCIETY OF CANADA 



related tliaii to tin' miscellany of genera associated under Conocephalidœ. 

 It is true that many of the species of the Arraphidiu are represented as 

 havini; t'vos, but some of these so-cjilled eyes are of a doubtful nature, 

 and in iceneral aspect the Conocoryj)hina' are nearer to this family than 

 to the other. 



The following classification will show the relations of the principal 

 species of the Conocoryphinic, the Kuropean species in each grouj) being 

 named liisf : 

 1. — Species in which the facial suture cuts oft" a narrow strip of the cheek, 



Pygidium of several joints (about 4) Conocoryphe, Corda. This 



group appears at the base of the Paradoxides Zone ; its realm is the 



Lower Paradoxides Beds. 



C. Sulzeri, Corda,' C. emarginata, Linrs. C. tenuisulcata, Linrs. 



C. impressa, Linrs. C. equalis, Linrs. C. Levyi, Berg. C. Heherti, 



Berg.' C. Baileyi, Hartt. C. Walcotti, Matt. C. Dabnani, Aug. 



C. Bufo, Hicks. C. elegans, Hartt.'' 

 2, — Species with small glabella, tubercle in fi-ont of the glabella, suture 



along the rim. Pygidium short (of two or three joints). Ctenoce- 



PHALUS, Corda. Appears at the base of the Paradoxides Zone. Range 



same as the preceding. 



C. coronata, Barr. C. exsulens, Linrs. C. Solvensis, Hicks. C. 



Matthewi, Hartt. Elyx laticeps, Aug.* 

 3. — Species with small glabella, wide cheeks, suture around the rim. 



Pygidium 4-5 joints. 



Erinnys, Salter. Appears in the Middle Paradoxides Beds. 



E. vemilosus, Salt. Elyx latilimbatus, Brog. ? Elyx breviceps, 



Ang. Carausia Menevensis, Hicks ? 

 4. — Species with shortened ocular crest near the front mai-gin, suture 



cutting otf a narrow strip of the cheek. Pygidium small (two to three 



joints.).* Atops, Emmons. Middle Paradoxides Beds ? 

 A. trilineatus, Emm, C. reticulatus, Wale." 



' The descrii)tion of C. Sulzeri implies that the suture is along the rim (hence it 

 was jsepanitcd from the others in my former classification). Trans. Roy. Soc. Can., 

 vol. ii., p. Ittl. I have since examined actual specimens and find the .suture divides 

 oflfa narrow piece of the cheek. 



■^ IJer^eron states that the suture is not visible in either of these species. 



•' The last three species form a .section distinguished by an angular enlargement 

 of the anterior marginal rim. 



* This species appears to be a distorted and mutilate Ctenocephalus, but neither 

 the figure of the head nor that of the pygidium, agrees with the description ; they 

 should have been " o6 aurtore rejecta." 



* Enunons says the pygidium of A. trilineatus has only one, or at most two 

 rings. Walcott figures three faint rings. 



* The pygidium of this species is not known. 



