34 Alexattder Petnmkcvitch, 



= Eoscorpms anglicits Woodward, Quart. Jour. Geo!. Soc, 



Vol. XXXII, 1876, p. 58, p]. VIII, fig. 3 

 P. anglicus Pocock, Carb. Arachn., 191 1, p. 16, fig. 2. 

 Bather. Ann. Mag. Nat. Hist., (8), Vol. VIII, 1911, p. 673, with fig. 

 From the Coal Measures of England. 



Genus Archaeoctonus Pocock 191 1. 

 Genotype A. glaber (Peach). 



1. A. glaber (Peach). 



= Eoscorpius glaber Peach (ad partim). Trans. Roy. Soc. Edinb., 



Vol. XXX, 1883, pp. 398-400, pi. XXII, figs. 2-2I. 

 A. glaber Pocock, Carb. Arachn., 1911, p. 17, fig. 3. 

 From the Lower Carboniferous of Scotland. 



2. A. iuberculaius (Peach). 



= Eoscorpius iuberculaius Peach, Trans. Roy. Soc. Edinb., Vol. 



XXX, 1883, p. 398, pi. XXIII, figs. 8-8h. 

 A. iuberculaius Pocock, Carb. Arachn., 1911, p. 19. 



From the Lower Carboniferous (Coal Measures, Calciferous) of 

 Scotland. 



Eocionus n. gen. 

 Genotype E. niiniaius n. sp. 

 From the Pennsylvanic (Lower Allegheny) of North America. 



Family Eoscorpionidae. 

 Late Palaeozoic scorpions with normal arrangement of coxae, 

 middle eyes not close to the anterior edge of cephalothorax, hand 

 comparatively narrow with long fingers; pentagonal sternum. 

 The family contains four genera. 



Genus Eoscorpius Meek and Worthen 1868. 

 Cephalothorax more or less rectangular, cauda normal. 

 Genotype E. carbonarius M. and W. 



1. E. carbonarius M. and W., Amer. Jour. Sci. & Arts, (2), 1868, 

 Vol. XLV, p. 25. Id., Geol. Surv. 111., Vol. Ill, 1868, p. 560 with fig. 



From the Pennsylvanic (Lower Allegheny) of North America. 



2. E. sparihensis Baldwin and Sutcliffe, Quart. Jour. Geol. Soc, 

 Vol. LX, 1904, p. 396, fig. 2. 



= Eubuthus rakovnicensis Fritsch (ad partem British specimen). 



Pal. Arachn., 1904, p. 74, fig. 91, pi. 12, figs. 1—3. 

 = A nihraco Scorpio sparihensis Pocock, Carb. Arachn., 1911, p. 20. 

 From the Coal Measures of England and Bohemia. 



3. E. dunlopi (Pocock). 



= Anihracoscorpio dunlopi Pocock, Carb. Arachn., 1911, p. 21, 

 % 5, pl- I, fig. I. 



