562 



CRUSTACEA. 



PRO.] 



lobed, segmented, semicircular; axis 



very convex, short. Type P. cuvieri. 

 alaricus, Billings, 1860, 

 Can. Nat. and Geo., 

 vol. 5, p. 68, Hud. Riv. 

 Gr. 



, angustifrons, Hall, 1862, 

 15th Rep. N. Y. St. 

 Mus. Nat. Hist, p. 70, 

 Schoharie grit. 

 auriculatus, see Phillipsia 



auriculatus. 



canaliculatus, Hall, 1862, 

 FIG. 1016 -Proe- 15th Rep. N. Y. St. Mus. 

 tus alaricus. Nat. Hist., p. 73, Up. 



Held. Gr. 

 clarus, Hall, 1862, 15th Rep. N. Y. St. 



Mus. Nat. Hist., p. 71, Up. Held. Gr. 

 conradi, Hall, 1862, 15th Rep. N. Y. St. 



Mus. Nat. Hist., p. 69, and Illust. Devon. 



Foss., pi. 20, Schoharie grit, 

 corycoeus, Conrad, 1842, (Asaphus cory- 



cceus,) Jour. Acad. Nat. Sci., vol. 8, p. 



277, and Pal. N. Y., vol. 2, p. 315, Ni- 

 agara Gr. 

 crassimarginatus, Hall, 1843, (Calymene 



crassimarginata,) Geo. Rep. 4th Dist. 



N. Y., D. 172, and Illust. Devon. Foss., 



pi. 20, Up. Held. Gr. 

 curvimarginatus, Hall, 1888, Pal. N. Y., 



vol. 7, p. 94, Up. Held. Gr. 

 davenportensis, Barris, 1879, Proc. Dav. 



Acad. Sci., vol. 2, p. 287, syn. for P. 



prouti. 

 delphinulus, Hall, 1888, Pal. N. Y., vol. 7, 



p. Ill, Up. Held. Gr. 

 denticulatus, see Phaethonides denticu- 



latus. 



doris, see Phillipsia doris. 

 ellipticus, Meek & Worthen, 1865, Proc. 



Acad. Nat. Sci', p. 267, and Geo. Sur. 



111., vol. 3, p. 460, Kinderhook Gr. 

 folliceps, Hall, 1888, Pal. N. Y., vol. 7, p. 



101, Up. Held. Gr. 

 granulatus, Wetherby, 1881, Jour. Gin. 



Soc. Nat. Hist., vol. 4, p. 81, Kaskas- 



k> Gr. 

 haldemani, Hall, 1862, 15th Rep. N. Y. 



St. Mus. Nat. Hist., p. 74, Ham. Gr. 

 hesione, Hall. 1862, 15th Rep. N. Y. 



St. Mus. Nat. Hist., p. 70, and 



Illust. Devon. Foss., pi. 20, Schoharie 



grit, 

 jejunus, Hall, 1888, Pal. N. Y., vol. 7, p. 



124, Ham. Gr. 

 junius, Billings, 1863, Proc. Port. Soc. 



Nat. Hist., vol. 1, p. 122, Low. 



Held. Gr. 

 latimarginatus, Hall, 1888, Pal. N. Y., 



vol. 7, p. 97, Up. Held. Gr. 

 loganensis, Hall & Whitfield, 1877, U. S. 



Geo. Exp. 40th Par., vol. 4, p. 264, 



Waverly Gr. 

 longicaudus, Hall, 1862, 15th Rep. N. Y. 



St. Mus. Nat. Hist., p. 108, and Illust. 



Devon. Foss., pi. 20, Ham. Gr. 

 macrobius, Billings, 1863, Proc. Port. 



Soc. Nat. Hist, vol. 1, p. 123, Low. 



Held. Gr. 



macrocephalus, Hall, 1862, 15th Rep. 



N. Y. St. Mus. Nat. Hist, p. 77, 



Ham. Gr. 

 marginalis, Conrad, 1839, (Calymene mar- 



ginalis,) Ann. Geo. Rep. N. Y., p. 66, 



and Illust. Devon. Foss., pi. 21, Tully 



limestone, 

 microgemma, Hall, 1888, Pal. N. Y., vol. 



7, p. 109, Up. Held. Gr. 

 missouriensis, Shumard, 1855, Geo. Rep. 



Mo., p. 110, Waverly or Cho- 



teau Gr. 

 nevadee, Hall, 1888, Pal. N. Y., vol. 7, p. 



129, Low. Devonian, 

 occidens, Hall, 1862, 15th Rep. N. Y. St. 



Mus. Nat. Hist., p. 80, Ham. Gr. 

 ovifrons, Hall, 1888, Pal. N. Y., vol. 7, p. 



110, Up. Held. Gr. 

 parviusculus, Hall, 1860, 13th Rep. N. Y. 



St. Mus. Nat. Hist, p. 120, and 24th 



Rep., p. 223, Hud. Riv. Gr. 

 peroccidens, Hall & Whitfield, 1877, U. S. 



Geo. Expl. 40th Par., vol. 4, p. 262, 



Waverly Gr. 

 phocion, Billings, 1874, 



Pal. Foss., vol. 2, p. 



63, Gaspe limestone 



No. 8, Devonian, 

 planimarginatus, Meek, 



1871, Proc. Acad. Nat 



Sci. Phil., p. 89, and 



Ohio Pal., vol. 1, p. 



223, Up. Held. Gr. 

 protuberans, Hall, 



1859, Pal. N. Y., vol. 



3, p. 351, Low. Held. 



Gr. 

 prouti, Shumard, 1863, 



Trans. St. Louis Acad. FIG. 1047. Proetus 



Sci., vol. 2, p. 110, phocion. 



Ham. Gr. 

 rowii, Green, 1838, (Calymene rowii,) 



Am. Jour. Sci., vol. 33, p. 406, and 



Illust. Devon. Foss., pi. 21, Ham. Gr. 

 spurlocki, Meek, 1872, Am. Jour. Sci., 3d 



ser., p. 426, and Ohio Pal., vol. 1, p. 161, 



Hud. Riv. Gr. The young of an Asa- 

 phus. 

 stenopyge, Hall, 1888, Pal. N. Y., vol. 7, 



p. 110, Up. Held. Gr. 

 stokesi, Murchison, 1839, (Asaphus 



stokesi,) Sil. Syst, p. 625, and Pal. N. Y., 



vol. 2, p. 316, Niagara Gr. 

 swallovi, see Phillipsia swallovi. 

 tumidus, Hall, 1888, Pal. N. Y., vol. 7, p. 



113, Up. Held. Gr. 

 verneuili, Hall, 1861, 15th Rep. N. Y. St. 



Mus. Nat, Hist., p. 73, and Illust. Dev. 



Foss., pi. 20, Up. Held. Gr. 

 PKOTICHNITES, Owen, 1852, Jour. Geo. Soc., 



vol. 8, p. 214. [Ety. protos, first; ichnos, 



foot-print; lithos, stone.] It consists 



of two rows of tracks or depressions, 



several inches apart ; each row consists 



of numerous irregular and subcircular 



depressions, sometimes elongated; be- 

 tween the rows there is frequently a 



groove, and at other times, the surface 



