102 DESCRIPTIONS UP THE MYRlAPOi 



Descriptions of the Myriapodce of the United States. 

 By Thomas Say. Read November 21st, 1820. 



class MYRIAPODA. 

 order 1. CII1L0GNAT1IA. 



genus JULUS. 



Body serpentiform, cylindrical ; antennae inserted 

 on the anterior margin of the head, second joint long- 

 est, terminal one minute ; eyes distinct ; feet many. 



Species. 1. J. fimpressus. Brown, a series of 

 lateral black dots, beneath yellowish white ; ulti- 

 mate segment mucronate. 



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Body cylindrical, immarginate, abo\e brownish, 

 beneath yellowish -white appearing glabrous; seg- 

 ments each with a lateral black spot, whitish lines 

 and dots sometimes obsolete, a transverse series of 

 longitudinal abbreviated obsolete impressed lines, 

 and beneath the stigmata with impressed, more 

 distinct ones, ultimate segment mucronate, spiracles 

 not prominent ; eyes rather large, conspicuous, black ; 

 labium yellowish white ; antennce brownish. 



A common species inhabiting under stones, and in 

 humid situations, a variety occurs with a very distinct, 

 •acute^ longitudinal, dorsal line, and variegated head. 



2. J. *punctatw. Body brownish, with an impress- 

 ed dorsal line, impressed white dots and spots, ulti- 

 mate segment unarmed. 



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