480 iutllp:tin 53, united states national museum. 



38850. Palaeocaris typus Meek and Worthen. Plesiotj'pe. 



Upper Coal Measures. Mazoii Creek, Gniiidy County, 

 Illiuois. 

 Packard, Mem. Nat. Acad. vSci., IV, 1886, p. 129, ]il. 7. fig. 2. 



24584. Palaeochorda prima Whitfiekl. Cotypes. 



Upper Cambrian. Head of Redwater Valley, Black Hills, 

 South Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 331, pi. I, fig. 2. 



24334. Paloeoneilo sulcata Hartt and Rathbun. Cotype. 



Middle Devonian. Ere re, Para, Brazil. 



Hartt and Rathbun, Ann. Lyceum Nat. Hist. N. Y., XI, 1875, p. 

 124. 



24582. Palaeophycus occidentalis Whitfield. Cotypes. 



Upper Cambrian. Head of Redwater Valley, Black Hills, 

 South Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 332, pi. I, fig. 3., 



38002. Palenarthrus impressus Scudder. Holotj-pe. 



Upper Coal Mea.sures. Mazon Creek, Grundy County, 

 Illinois. 



Scudder, Mem. Boston vSoc. Nat. Hist., IV, 1890, p. 422, pi. 38, 

 fig. 4; Foss. Insects N. America, L 1890, p. 398, pi. 30, fig. 4. 



8081. Paliurus pentangulatus White. Holotype. 



Fox Hills (Cret.). Monument Creek, near Colorado 

 Springs, Colorado. 



White, Eleventh .Vnn. Rept. L^. vS. Geol. vSurv. Terr., 1879, p. 302, 

 pi. 4, figs. 4a, 4b. 



133 1 7. Pallium estrellanum Conrad. Cotype. 



Miocene. Kstrella, California. 



Conrad, Rept. Expl. and Surveys R. R. Miss. Riv. to Pacific 

 Ocean, VII, 1857, p. igr. — Ball, Trans. Wagner Free Inst. Sci. 

 Phila., Ill, Pt. IV, 1898, p. 7or. 



=^Pecten (Lyropecten) hermanni. 

 See Pecten hermanni. 



25478. Paltorhynchus ? bisulcatus vScudder. Cotyi)e. 



Older Tertiarw Roan Mountains, western Colorado. 



vScudder, Mon. XXI, U. S. Geol. Surv., 1893, p. 19, pi. 8, fig. 3. 



162542. Paludestrina curta Arnold. Holotype. 



Pleistocene. vSan Pedro, California. 



Arnold, Mem. Calif. .\c:id. Sci., IIL iy"3, p. 3<>,S, pb 8, fig. 2. 



162541. Paludestrina stokesi Arnold. Holotype. 



Pleistocene. .San Pedro, California. 



Arnold, Mem. Calif. Acad. vSci., HI, 1903, p. 306, pi. 8, fig. 3. 



