338 CALIFORNIA ACADEMY OF SCIENCES. 



PHILLIPSIA. PKOETUS. 



TUBEBCULATA Vogd., 1887; Annals New York Acad. Sci., vol. 4, p. 92. 



TRINUCLEATA Herr., 1887; Bull. Denison Univ., vol. 2, p. 64, pi. 1, 



figs. 23, 23 a, c, e, h; pi. 2, fig. 32; pi. 3, fig. 21. Coal Measures. 



TRINUCLEATA Herr., 1889; Bull. Denison Univ., vol. 4, p. 49. Flint 



Ridge, Licking county, Ohio. Coal Measures. 



Proetus trinucleatus Vogd., 1888; Annals New York Acad. Sci., vol. 

 4, p. 81, pi. 2, figs. 7, 8, 9. 



vindobonensis Hartt, 1868; Acadian Geol., p. 353. Windsor, Nova 



Scotia. Carboniferous. 



vindobonensis Herr., 1887; Bull. Denison Univ., vol. 2, p. 63. 



vindobonensis Vogd., 1887; Annals New York Acad. Sci., vol. 4, p. 89. 



(cf. Phillipsia meramecansis Shum.) 

 Piliolites Cozzens, 1846; Annals Lyceum Nat. Hist. N. Y., vol. 4, p. 157. 



ohioensis Cozzens, 1846; Annals Lyceum Nat. Hist. N. Y., vol. 4, p. 



157, pi. 10, figs. 1 a, b. (cf. Proetus crassimarginatus?) 

 PROETUS Stein., 1831; Mem. Soc. Geol. France, vol. 1, p. 355, pi. 24, fig. 6. 

 Syn., JEonia Burm., 1843; Organization Trilobites, p. 116 (Kay Soc. 

 ed., p. 100). Burmeister separates Dalman's species Caly- 

 mene concinna from the type of the genus Proetus, and 

 gives it the new generic name of ^Eonia, with descriptions 

 and figures of A. concinna, A. stokesii and A. verticalis. 



Phceton Barr., 1846; Notice Prelim., p. 62. The author herein 

 gives the new generic term Phceton for species of Proetus 

 with fimbriated pygidia. 



PRINOPELTIS Cord., 1847; Prodr., p. 121. New generic name 

 proposed for the preoccupied term of Ph&ton, Pygidium 

 with the pleurae produced into spines forming a fimbriated 

 circumference. Phaetonellus Novak, 1890. 



XIPHOGONIUM Cord., 1847; Prodr., p. 70. Proposed genus for 

 certain species of Proetus, with nine segments in the thorax. 

 Pleurae of the pygidium unsegmented. 



GONIOPLEURA Cord., 1847; Prodr., p. 80. This genus includes 

 such species as Proetus elegantulus Loven, with twelve seg- 

 ments in the thorax. 



FORBESIA McCoy, 1847; Sil. Foss. Ireland, p. 46. This author 

 uses for the types of his genus Forbesia latifrons and F. 

 stokesii, which is the same as that used by Barrande in 

 1846 for his genus Phccton and Angelin in 1878 for the 

 genus Ph&tonidcs. Genal angles produced into long spines; 

 pleurae of the pygidium segmented; glabella furrows present 

 and large tubercles terminating the neck furrow. 



Gercuftos Goldf., 1843; Neues Jahrbuch fiir Mineral., p. 557. This 

 genus is a Proetus with G. Icevigatus for its type, a species 

 identical with Proetus ciivieri Stein. 



