3/2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



southeast of Knoxville, Knox County; both m Tennessee; (14) 

 Conasauga formation, hmestones overlying the sandstones of the 

 Rome formation, near the wagon road and in a quarry near the rail- 

 road track, 7 miles (11. 2 km.) southwest of Rome [see Hayes, 1902, 

 historical geology sheet], and (142a) railroad cut on west side of 

 Big Cedar Bridge, 3 miles (4.8 km.) northeast of Cave Spring, both 

 in Floyd County, Georgia. 



DOLICHOMETOPUS SUECICUS Angelin 



Plate 50, figs. 3, sa-b, 4, 4a 



Dolichometopus svecicus Angelin, 1852 [Reprint 1854, 1878], Pal. Scan- 

 dinavica, ist ed., Lipsise, p. 73, pi. 2>7, %• 9- (Original description and 

 illustration.) 



Dolichometopus suecicus Linnarsson, 1873, Geol. Foren. Stockholm For- 

 handl., Vol. i. No. 13, p. 246. (Refers to occurrence of species.) 



Dolichometopus suecicus Brogger, 1878, Nyt Mag. for Naturvid., Vol. 24, 

 p. 46, pi. 3, fig. 12. (Notes occurrence of species at Krekling and illus- 

 trates a cranidium and pygidium.) 



Dolichometopus suecicus Matthew, 1897, Trans. Royal Soc. Canada, 2d 

 sen, Vol. 3, Sec. 4, pp. 184, 185, pi. 3, figs, ya, yb. (Reproduces top view 

 and side outline of a drawing of the type cranidium of the species.) 



Dolichometopus suecicus Lorenz, 1906, Zeits. deuts. geol. Gesells., Vol. 58, 

 Pt. I, p. 74, text fig. (Compares Dolichometopus and Bathyuriscus and 

 illustrates D. svecicus Angelin.) 



Of this species only the cranidium and associated pygidium are 

 known to me. Now that we have several species of Dolichometopus 

 represented by the entire dorsal shield, there is little, if any, doubt 

 that the pygidium is correctly referred to the species. Dr. Matthew 

 has illustrated the type specimen,' (pi. 50, fig. 4) and in this paper 

 I am illustrating the cranidium and pygidium as found in the 

 Andrarum limestone at Andrarum. The largest cranidium has a 

 length of 21 mm. 



Surface of test punctate and when not worn smooth marked by 

 fine, sharp, irregular, inosculating ridges, those on the glabella more 

 or less concentric in relation to the central portion and on the occipital 

 ring subparallel to the posterior margin. 



By reflected light traces of three pairs of glabellar furrows may 

 be seen, and the matrix of the test of the glabella shows slight im- 

 pressions of glabellar furrows. 



* Trans. Royal Soc. Canada, 2d sen, Vol. 3, 1897, Sec. 4, pi. 3, figs, ya, yb. 



