870 CALIFORNIA ACADEMY OF SCIENCES. 



ANTHEAPAL^MON. APTYCHOPSIS. 



Anthraconectes M. & VV., 1868; Am. Jour. Sci., 2cl series, vol. 46, p. 21. 



'mazonensis M. & W. (See Eurypterus mazonensis.) 



Anthrapal^imon Salt., 1861; Quart. Jrur. Geol. Soc. London, vol. 17, 



p. 529. 

 GKACiLis M. & W., 1865; Proc. Acad. Nat. Sci. Phila., vol. 17, p. 50. 



Mazon Creek, Grundj' county, Illinois. Coal Measures. 

 GRACILIS M. & W., 1866; Geol. Survey Illinois, vol. 2, p. 407, pi. 32, 



figs. 4 a, b, c. 



GRACILIS M. & W., 1868; Geol. Survey Illinois, vol. 3, p. 554, figs, a, b. 



GRACILIS White, 1884; 13th Eep. Dept. Geol. Nat. Hit. Indiana, p. 



180, pi. 38, figs. 8, 9. 



GRACILIS Pack,, 1885; American Naturalist, vol. 19, p. 880. 



GRACILIS Pack., 1886; Mem. Natl. Acad. Sci., vol. 3, p. 135, pi. 4, figs. 



1, 2, 3, 5, 6; pi. 7, figs. 3-6. 



(Palceocarabus) hilliancs Daw., 1878; Geol. Mag., vol. 4, p. 56, fig. 1. 



Coal Measures. 



(Palceocarabus) hillianus Daw., 1878; Suppl. Acadian Geol., p. 55, 



fig. 10. South Joggins, Nova Scotia. 



Aparchites Jones, 1889; Annals Mag. Nat. Hist., 6th series, vol. 3, p. 385. 



CONCINNCS Jones. This species was figured and described as Cythe- 



ropsis concinnus; Ann. Mag. Nat. Hist. Apl., 1858, p. 254, pi. 10, 

 figs. 3, 4. Jones refers it to Aparchites; Contrib. Micro. Palaeont., 

 1891, p. 99. Panquett's Rapids, Allumette Island, Ottawa River. 



Trenton. 



— — INORNETUS Ulrich, 1890; Jour. Cincinnati Soc. Nat. His., vol. 13, p. 

 182, pi. 16. figs. 3, 3 a-b. Falls of the Ohio. Devonian. 



METIS Jones, 1891; Contrib. Micro-Palseont., p. 3, p. 91, pi. 11, figs. 



15 a-b. Athabasca River. Devonian. 

 METIS Whiteaves; Contrib. Canadian Pal^eont., vol. 1, p. 246. 



MiNUTissiMus (Hall) 'Ulrich, 1889; Contrib. Micro-Palaeont., pt. 2, 



p. 49 For other references, see Lejjerditia (Isochilina) mlnutis- 

 sjwa Hall. Stony Mountain, Manitoba. Hudson. 



MUNDULUS Jones, 1891; Contrib. Micro-Palseont., pt. 3. p. 62, pi. 10, 



fig. 12 a-b. Province of Quebec. Chazy? 



OBLONGUS Ulrich, 1890; Jour. Cincinnati Soc. Nat. Hist., vol. 13, p. 



137, pi. 10, figs. 10, 10 a. Middletown, Ohio. Hudson. 



UNICORNIS Ulrich, 1889; Contrib. Micro-Palaeont., pt. 2, p. 50, pi. 9, 



fig. 11. For other references, see Leper ditia unicornis. Stony 

 Mountain, Manitoba. Hudson. 



TYRELLii Jones, 1891; Contrib. Micro-PalaBont, pt. 3, p. 62, pi. 13, 



figs. 14 a, b, c. Black Island, Lake Winnipeg. Chazy. 



Aptychopsis Barr., 1872; Syst. Sil. Boheme, vol. 1, suppl., p. 436. 



