246 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



only first and second segments provided with air cavities. Telsori 

 rather strongly produced and terminating in an acute point. Uro- 

 pods longer than terminal segment, outer ramus broadly lanceo- 

 late and comparatively longer in male than female. 



Color, uniform gray black, sometimes variegated with 

 irregular dark spots. 



Length 10 mm. 



Disrtibution ; world wide. British Columbia ; Iceland ; Cape 

 of Good Hope; Key West, Florida; also West Haven and 

 New Haven, Connecticut. 



The species is found under logs and bark in generally dry 

 places, also under dead leaves and stumps and under boards, in 

 greenhouses. 



It is distinguished from the other species of the genus by 

 the unspotted body. 



Porcellio rathkei Brandt. 



FIG 81. Porcellio rathkei. 



1833. Porcellio rathkei, Brandt, Bull. soc. imp. Nat. Moscou., 

 vol. 6, p. 177. 



1899. Porcellio rathkei, G. O. Sars, Crust. Norway, vol. 2, 

 p. 1 80, pi. 79, fig. i. 



1905. Porcellio rathkei, Richardson, Bull. U. S. Nat. Mus., 

 No. 54, p. 622. 



