60 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



43740. Archimedes invaginatus Ulrich. Figured sections of 



cotype. 

 Chester (Miss.). Chester, Illinois. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 575, pi. 63, figs. 11c, nd. 



43417. Archimedes laxus Hall. Plesiotype. 



Chester (Miss.). Litchfield, Kentucky. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 580, pi. 63, figs. 15, 15a. 

 See Helicopora archimediformis. 



43737. Archimedes proutanus Ulrich. Cotypes. 



Chester (Miss.). Sloans Valley, Pulaski County, Ken- 

 tuck}-. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 576, pi. 63, figs. 3-3C. 



43738. Archimedes proutanus Ulrich var. Plesiotype. 



Chester (Miss.). Sloans Valley, Pulaski County, Ken- 

 tucky. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 576, pi. 63, fig. lib. 



43739. Archimedes terebriformis Ulrich. Cotypes. 



Chester (Miss. ) . Sloans Valley, Pulaski County, Kentucky. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 575, pi. 63, figs. 5-5D. 



38093. Archimylacris parallela Scudder. Holotype. 



Upper Coal Measures. Campbell's Uedge, near Pittston, 

 Pennsylvania. 



Scudder, Mem. Boston Soc. Nat. Hist., III. 1879, P- 8 5. P 1 - 6, fig. 6; 

 Foss. Insects N. America, I, 1890, p. 105, pi. 6, fig. 6. 



38091. Archimylacris paucinervis Scudder. Holotype. 



Upper Coal Measures. Mazon Creek, Grundy County, 

 Illinois. 



Scudder, Mem. Boston Soc. Nat. Hist., IV, 1890, p. 411, pi. 31, 

 fig. 5; Foss. Insects X. America, I, 1S90, p. 387, pi. 23, fig. 5. 



45686 Archinacella cingulata Ulrich. Holotype. 



Black River (Ord.). Mercer Count}-, Kentucky. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. II, 

 1897, p. 829, pi. 61, figs. 1, 2. 



45687. Archinacella deleta (Sardesou). Plesiotype. 



Black River (Ord.). Near Cannon Falls, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 831, pi. 61, fig. 17. 



45688. Archinacella depressa Ulrich and Scofield. Plastotype. 



Stones River (Ord.). Minneapolis, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 830, pi. 61, figs. 8, 9. 



