CATALOGUE OF TRILOBITES. 333 



PELTURA. PHACOPS. 



Peltura Milne-Edw., 1840; Crust., vol. 3, p. 344. 



holopygc. (See Bathynohis holopyae.) 



SCARABEOiDES (Wahl.) Matt., 1891; Traus. Eoyal Soc. Canada, vol. 0, 



p. 53, pi. 13, fifjs. 9 a-b. King Street and at Navy Island, St. 



John, also at Cape Breton. Taconic. 



Pemphigaspis Hall, 1863; 16th Eep. New York State Mits. Nat. Hist., p. 221 . 



BULLATA Hall, 1863; 16th Rep. New York State Mns. Nat. Hist., p. 



221, pi. 5 a, tigs. 3-5. A species probably of the genus Micro- 



diliCHS. 



Phacops Emm., 1839; De Trilobites, etc., p. 18. The generic term Trhn- 

 erocephalus McCoy has been used by authors for species like 

 Phacopa volhorthi, compact in form ; glabella inflated and expanded 

 in front; lobes, except the basal ones, obscure; eyes small, and 

 occupying the front portions of the head; geual angles rounded; 

 pleura rounded; pygidium small, with few segments, and even 

 border. Acaste Goldfuss for such species as Phacops downingke 

 Murch. Diagnosis: Glabella not inflated nor greatly expanded 

 in front; furrows distinct; ej^es well developed, with numerous 

 lenses; genal angles produced into spines; pleurre rounded or 

 truncate; pygidium small generally, with less than eleven seg- 

 ments; border even, but sometimes miicronate. 



Syn., PHACOPS (Monorakos) Schm., 1866. 



Oalymene bufo Green, 1832; Monthly Am. Jour. Geol., p. 559. 



Calymene bufo Green, 1832; Mou. Tril. N. A., p. 41, cast 10. The 

 fossil is said to have been found in a dark grayish limestone in 

 the State of New Jersey. The cast approaches so near Phacops 

 lati/rons Bronn that it may be the same species. 



BUFO Hall, 1861; Des. New Species Foss., p. 65. 



BUFO Hall, 1862; 15th Rep. New York State Cab. Nat. Hist., p. 93. 



BUFO Hall, 1876; Hlus. Dev. Foss. Crust., pi. 8, figs. 24, 25. 



BUFO Hall, 1888; Pal. New York, vol. 7, p. 26, pi. 8, figs. 25, 26. 



homhifrons. (See Phacops cristata.) 



fACAPONA Hall, 1861; Des. New Species Foss., p. 68. Cacapon River 



near its junction with the Potomac, Va. Hamilton. 



Syn., Calymene. Imfo Cast., 1843; Syst. Sil. de I'Amor., p. 21, pi. 2, 

 figs. 1-4. 



CACAPONA Hall, 1862; 15th Rep. New York StateCab. Nat. Hist., p. J)6. 



CACAPOXA Hall, 1876; Hlus. Dev. Foss. Crust., pi. 8, figs. 18-23. 



CAC.\PONA Hall, 1888; Pal. New York, vol. 7, p. 27, pi. 8, figs. 19-24. 



callicephala. (See Dalmanites callicej^hala.) 



CRISTATA Hall. 1861; Des. New Species Foss., p. 67. 



Upper Helderberg. 

 Syn., Phacops homhifrons Hall, 1861; Des. New Species Foss., p. 67. 

 Phacops cristata Hall, 1862; 15th Rep. New York State Cab. 

 Nat. Hist., p. 95. 



