196 CALIFORNIA ACADEMY OF SCIENCES. 



Siibgeuiis 1, Trbnerocej^halus McCoy. Phacops ( Trimerocephalus) Icevis 

 Miinst., P. cryphthophthalmus Emm. 



Subgenus 2, Phacops Emm. P. (Phacojys) granulatus Mtiust., 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) doivningim Murcli., also varia- 

 tions (a) vulgaris, (b) macrops, (c) inflatus, (d) sinnosus. 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, Chasmops McCoy. P. (Ghasmopsi ) jukesii Salt., P. (Chas- 

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

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

 mops) bailyi n. sp. 



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

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

 P. ( Odontochile ) caudatus'Bxiimi, var. (a) vulgaris, (b) tiiberctilaio-caudatus 

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

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



Subgenus 6, Cryphceus Green. P. (Cryphcezis) ptunctatus Stein. 



Pam. Cheirurus siibgenus Crotalocephalus Salt. Cheirurus (Crotalo- 

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

 natus, (h) centralis. 



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

 rus) cancrurus Salt. 



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

 ( Eccoptochile) frederici n. sp. 



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

 peltis) octolobatus McCoy. 



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

 Portl., A. benevolens n. sp., A.j^auper 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 Palaaont. Soc. London, vol. 17, 1863. 



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

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

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

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

 ('. duplicata Murch., C.parvifrons Salt, also var. murchisoni, C? daviesii 

 n. sp. 



