[From Entomologica Americana, II, 1SS7, ]>p. 4">-46.] 



NEW GENUS AND SPECIES OF POLYDESMID^E. 



ISY < iiAia,i:> ii. HOI. i. MAX. 



In examining the material of this family in the museum of the In- 

 diana University and my own collection, I have found the following new 

 species. The types are deposited in the museum of the Indiana Uni- 

 versity. 



Genus I. POLYDESXUS Latreille. 



1. Polydesmus nitidus sp. nov. 



Dark shining brown, beneath lighter, lateral plates reddish-brown; 

 antenna' dark. Moderately slender and depressed, acuminate ante- 

 riorly and posteriorly, but not so much as in eanadensis. Antenna- 

 exceeding the length of body, subclavate. First dorsal plate wide, 

 angles a little produced, sides one-toothed; posterior border with a row 

 of line, ciliated spines: anterior row of scales barely distinguishable, 

 middle row of four large scales, posterior of three, small ones in the 

 middle and two larger ones at both ends, anterior side scale small, 

 other OIK; (repugnatorial pore scale) large elongate. Other dorsal plates 

 witli the scales distinct, anterior angles rounded, posterior produced, 

 lateral margins. '5-1 toothed, posterior border of anterior segments cil- 

 iated ; anterior border divided by the median dorsal line into two large 

 scales : middle row consists of four scales, posterior of six, outer larger, 

 anterior side scale large and swollen, repugnatorial pore scale la rue 

 and elongate; scales of last segments more elongate, marked with fine 

 irregular lines, the last row projecting behind. Feet long, strongly 

 crassate in the male and the femur swollen a bove. in the female some 

 what crassate. copulation foot large, slender and curved; apex be- 

 neath with several bunches of flat, spiny hairs, below this are forr 

 tubercles, the t wo lowest ones on the inner side largest , elongate, t I e 

 last one pointing toward the coxa-, piligerous pulvillns large, above 

 which is a moderately long tapering branch and below a tubercle. 

 Length of body 1.V1S ; \vidt h. L' S-;;.r>""". 



Iliihitui. IVnsacola. Fla. 



1 have examined \~> specimens of this species, collected by myself in 

 the vicinity of swamps. This species is related to c#na<fc>m, but is 

 easily distinguished by the long slender tubercles of the male genitalia. 



67 



