TYPE SPECIMENS OF INVEKTEHRATE FOSSILS. 63 



17446. Aristozoe rotundata Walcott. Cotype. 



Lower Cambrian. Near North Greemvicli, Washington 

 County, New York. 



Walcott, Ainer. Journ. Sci., (3) XXXIV, 18S7, p. 193, pi. i, fig. 

 9; Tenth Ann. Rept. U. S. Geol. Surv., iSgu, p. 627, pi. So, 

 fiS- 3- 



17447. Aristozoe troyensis (Ford). Plesiotype. 



Lower Cambrian. Wa.shington County, New York. 



Walcott, AnuT. Journ. Sci., (3) XXXIV, 1887, p. 193, pi. i, fig. 

 8; Tenth .\iin. Rept. U. vS. Geol. Surv., 1890, p. 628, pi. 80, 

 fig. 2a. 



26380. Arthracantha punctobrachiata Williams. Plesiotype. 



Hamilton (Dev.). Thedford, Ontario, Canada. 



Wood, vSniithsonian INIisc. Coll., Quart., XLVII, 1904, p. 81, pi. 

 16, fig. 4. 



43633. Arthroclema armatum I'lrich. Cotypes. 



Trenton (Ord.). Cannon Falls, Minnesota. 



ririch, Journ. Cincinnati vSoc. Nat. Hist., XII, 1890, p. 194, fig. 

 19, i9a-h; Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, 

 Pt. I, 1893, p. 201, pi. 2, figs. 8-1 1, 25, 28-33; pl- 3. fig- 7- 



43415. Arthroclema billingsi XTlrich. Holotype. 



Trenton (Ord. ). Ottawa, Canada. 



Ulrich, Geol. Surv. Illinois, VIII, 1890, ]i. 642; (tcoI. and Nat. 

 Hi.st. Surv. Minn., Final Rept., Ill, Pt. I, 1893, p. 197, pl. 2, 

 fig. 7. 



43634. Arthroclema cornutum Ulrich. Cotypes. 



Black River (Ord. ). Minneapolis, Minnesota. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XII, 1890, p. 193, figs. 

 18, i8a-g. Geol. and Nat. Hi.st. Surv. Minn., Final Rept., HI, 

 Pt. I, 1893, p. 200, pl. 2, figs. 16-21, 23 



43665. Arthroclema spiniforme Ulrich. Cotypes. 



Stones Ri\er (Ord. ). Uel)anon, Tennessee. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., V, 1882, p. 161, pl. 6, 

 figs. 10, loa. 



= Helopora .spiniformis. 



43498. Arthroclema striatum Ulrich. Cotypes. 



Black River (Ord. ). Minneapolis, Minnesota. 



Ulrich, CtcoI. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. I, 

 1893. p. 198, pl. 2, figs. 22, 24; pl. 3, figs. 28-33. 



33068. Arthrolycosa antiqua Harger. Pla.stotype. 



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

 Illinois. 



Beecher, Amer. Journ. Sci. (3), XXXVIII, 1889, pp. 219-223, 

 figures. 



