196 CALIFORNIA ACADEMY OF SCIENCES. 



Subgenus I, Trimerocephalus McCoy. Phacops ( Trimerocephalus ) lce.vis 

 Miinst., P. cryphthophthalmus Emm. 



Subgenus 2, Phacops Emm. P. (Phacops) granulatus Miinst., P. 

 (Phacops) latifrons Bronn, also var. P. (Phacops) stokesii Milne-Edw., P. 

 (Phacops) nudus n. sp., P. (Phacops) mushini n. sp. 



Subgenus 3, Acaste Goldf. P. (Acaste) downingice Murch., also varia- 

 tions (a) vulgaris, (b) macrops, (c) infiatus, (d) spinosus. Variety or sub- 

 species P. constrictus, P. (Acaste) apiculatus Salt., P. (Acaste) minus n. 

 sp., P. (Acaste) incertus Deslong., P. (Acaste) jamesii Portl., P. (Acaste) 

 alifrons Salt., P. (Acaste) brongniarti Portl., also var. dalmani. 



Subgenus 4, Ohasmops McCoy. P. (Chasmops?) jukesii Salt., P. (Chas- 

 mops) macroura Sjogr., P. (Chasmops) conophthalmus Boeck? P. (Chas- 

 mops) amphora Salter, P. (Chasmops) truncato-caudatus Portl., P. (Chas- 

 mops) bailyi n. sp. 



Subgenus 5, Odontochile Cord. P. (Odontochile) obtusicaudatus Salt., 

 P. (Odontochile) mucronatus Brong., P. (Odontochile.) imbricatulus Ang., 

 P. (Odontochile) caudatus'Briinu, var. (a) vulgaris, (b) tuber culato-caudatus 

 Murch., (c) nexilis Salt., (d) aculeatus Salt., P. (Odontochile) longicaudatus 

 Murch. var. (a) armiger, (b) grindrodianus, P. weaveri Salt. 



Subgenus 6, Cryphceus Green. P. (Cryphceus) punctatus Stein. 



Fam. Cheirurus subgenus Crotalocephalus Salt. Cheirurus (Crotalo- 

 cephalus) articulatus Miinst.? C. bimucronatus Murch. var. (a)bimucro- 

 natus, (b) centralis. 



Subgenus Cheirurus Beyr. C. (Cheirurus) gelasinosus Portl., C. (Cheiru- 

 rus) cancrurus Salt. 



Subgenus Eccoptochile Cord. C. ( Eccoptochile ) sedgwiclci McCoy, C. 

 (Eccoptochile)frederici n. sp. 



Subgenus Actinopeltis Cord., C. (Actinopeltis) juvenis Salt., C. (Actino- 

 peltis) octolobatus McCoy. 



Sphcerexochus mirus Beyr., S. ? boops n. sp. Amphion pseudo-articulatus 

 Portl., A. benevolens n. sp., A. pauper n. sp. 



On some fossil Crustacea from the Coal Meas- 

 ures and Devonian rocks of New Brunswick, Nova 

 Scotia, and Cape Breton. 



In London, Edinb., Dublin Philos. Mag., 4th series, vol.24, 1862. p. 166. 



A monograph of British Trilobites. Pt. 2. 



Pp. 81-128, pis. 7-19. 



In Palseont. Soc. London, vol. 17, 1863. 



Staurocephalus murchisoni Barr., S. globiceps Portl., S.? unicus Wyv. 

 Thorn. Deiphon forbesi Barr. Calymene tuberculosa Salt., C. blumen- 

 bachii Brong., also vars. allportiana and caractaci. Subspecies 1, Caly- 

 mene senaria Conrad. 2, C. cambrensis Salt. Calymene tristani Brong., 

 C. duplicata Murch., C.parvifrons Salt, also var. murchisoni, CJ daviesii 

 n. sp. 



