MILLIPEDS OF NORTH AMERICA 141 



Genu$ PSEUDOJULUS BoUman 



Pseudojulus Bollman, 1887, Ann. New York Acad. Sci., vol. 4, p. 37 (as 



subgenus of Parajulus) . 

 Pseudoiulus Silvestri, 1896, Ann, Mus. Civ. Stor. Nat. Genova, ser. 2, vol. 



16, pp. 138, 177. 

 Generotype: Parajulus (Pseudojulus) obtectus Bollman, by original des- 

 ignation. 

 Range: Western Florida. 

 Species: One. 



Pseudojulus obtectus ^° Bollman 



Parajulus (Pseudojulus) obtectus Bollman, 1887, Ann. New York Acad. 



Sci., vol. 4, p. 37. 

 Type: If extant, probably at U. S. Nat. Mus. 



Type Locality : Restricted to Pensacola, Escambia County, Florida. 

 Range: Known only from type locality. 



Genus PTYOIULUS Cook 



Ptyoiulus Cook, 1895, Ann. New York Acad. Sci., vol. 9, p. 6. 



Generotype: Julus pennsylvanicus Brandt {=Julus impressus Say], by 

 original designation. 



Range: Appalachian region from New York southward to Georgia, west 

 to Illinois. 



Species: Four. 



Ptyoiulus impressus (Say) " 



Julus impressus Say, 1821, Journ. Acad. Nat. Sci. Philadelphia, vol. 2, 

 p. 102. 



Julus pennsylvanicus Brandt, 1841, Recueil, p. 85. 



Julus pilosiscutis Wood, 1864, Proc. Acad. Nat. Sci. Philadelphia, p. 11; 

 1865, Trans. Amer. Philos. Soc, vol. 13, p. 198 (type locality: Sus- 

 quehanna County, Pennsylvania; type: Acad. Nat. Sci. Philadelphia) . 



Julus montanus Cope, 1869, Proc. Amer. Philos. Soc, vol. 11, p. 181 

 (type locality: Montgomery County, Virginia; location of type un- 

 known). 



**This name was based upon immature specimens, probably of two different species, 

 from Pensacola, Florida, and Bloomington, Indiana. Dr. Nell Causey (in litt.) has 

 proposed restricting Bollman's name to a species occurring at Pensacola, the male of 

 which presents distinctive generic characters and which justifies retention of Bollman's 

 generic and specific name for its designation. 



"The present allocation of Say's /. impressus has been arrived at after a careful re- 

 consideration of details of Say's description in connection with his remarks on habitat 

 and abundance. To these conditions no other form is thought to conform as well 

 as the species that has long been commonly known under Brandt's name pennsylvanicus. 



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