CATALOGUE OF TRILOBITES. 3oo 



PELTURA. PHACOPS. 



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



holopyge. (See Bathijnotiit> holojnjfje.) 



scAEABEOiDES (Walil.) Matt., 1S91; Traus. Koyal Soc. Cauada, vol. 9, 



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

 •Tohn, also at Cape Breton. Tacouic 



Pemphigaspls Hall, 1863; 16th Eep. New York State Mus. Nat. Hist., p. 221 



BULLATA Hall, 1863; 16tli Rep. New York State Mus. Nat. Hist., p 



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

 discus. 



Phacofs Emm., 1839; De Trilobites, etc., p. 18. The generic term TritJi- 

 crocei^halus McCoj^ has been used by authors for species like 

 Phacops volborihi, 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; genal angles rounded; 

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

 border. Acaste Goldfuss for such species as Phacops downingice 

 Murch. Diagnosis: Glabella not inflated nor greatly expanded 

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

 lenses; genal angles produced into si:)iues; pleurro rounded or 

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

 ments; border even, but sometimes mucronate. 

 Syn., PHACOP.S (Monorakos) Schm., 1866. 



Ccdymeue bufo Green, 1832; Monthly Am. Jour. Geol., p. .")59. 

 Galymene bufo Green, 1832; Mon. 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 Jei'sey. The cast api^roaches so near Phacops 

 latifrons Bronn that it may be the same species. 



BUFO Hall, 1861; Des. New Species Foss., p. 6o. 



BUFO Hall, 1862; loth 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. 



bomhifrons. (See Phacops cristala.) 



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



near its junction with the Potomac, Va. Hamilton. 



Syn., Cabpnene hufo Cast., 1843; Syst. Sil. de I'Ami'r., p. 21, pi. 2, 

 figs. 1-4. 



CACAPONA Hall, 1862; 15th Rep. New York State Cab. Nat. Hist., p. 96. 



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



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



caUicephala. (See Dcdmanitcs callicei)hala.) 



CRisTATA Hall, ISO I; Des. New Species Foss., p. 67. 



Upper Helderberg. 

 Syn., Phacoj)s bomhifrons Hall, 1861; Des. New Species Foss., p. 67. 

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

 Nat. Hist., p. 95. 



