SCORPIONIDuE. 



659 



Sternbergi) from the coal formation in Bohemia, one inch long. 

 Schiodte has found a curious blind species in the caves of 

 Adelsburg, and it is very probable that a closer examination 

 of the Kentucky caves will give a similar American species." 

 (Hagen.) In Chernes there are no eyes. C. Sanborni Hagen 

 is found in Massachusetts. 



In Chelffer there are two eyes. C. cancroides Linn. (Fig. 

 636, enlarged) is dark brown, with many short spines on the 

 thorax. It occurs in Massachusetts and Illinois. 



SCORPIONID.E Latreille. The Scorpions are well known by 

 the immense forceps-like maxillse, and the long tail continu- 

 ous with the thorax, and end- 

 ing in a powerful sting, in which 

 is lodged a poison sac. The body 

 is more distinctly divided into seg- 

 ments than any other Arachnids, 

 and hence the scorpions bear, as 

 Gerstaecker suggests, a strong 

 analogy to the Myriapods. The 

 genus Scorpio is restricted to those 

 species which have six ocelli. 8. 

 Allenii Wood is our only North 

 American species and is found in 

 Lower California. Our other spe- 

 cies are mostly comprised in the 

 genus Butlms, which has eight 

 ocelli. B. Carolinianus Beauvois 

 (Fig. 637) ranges from the South- 

 ern Atlantic States through Texas 

 northward into Southern Kansas. " Scorpions are dangerous 

 in proportion to their size, their age, the state of irritation they 

 may be in, and the temperature of the climate in which they 

 reside. The wounds, however, even of the largest species are 

 rarely fatal." (Moquin Tandon.) 



Messrs. Meek and "Worthen have described (Palaeontology 

 of the Illinois Geological Survey, iii, p. 560) two fossil scor- 

 pions from the lower part of the coal measures of Illinois, 

 which are as highly developed, and bear a very close resem- 



Fig. 037. 



