THi: MYRIAPODA OF NORTH AMERICA. 



53 



sides somewhat rounded; ocelli. 40-60, arranged in 7-10 series. Seg- 

 ments, 45-55; First segment with the sides striate. Other segments 

 not deeply striate, numerous indistinct wavy striae above. Last seg- 

 ment with a moderate short spine, not projecting beyond The anal 

 valves, sparsely pilose; anal valves smooth, sparsely pilose, scarcely 

 marginate; anal scale triangular, sparsely pilose. Repugnatorial pore 

 moderate, oval or round, partly hidden by the transverse suture, which 

 is sharply emarginate. Pairs of feet, 70-90, equaling width of body, 

 rather stout, sparsely pilose. Male : Mandibulary stipes rather strongly 

 produced beneath. First pair of feet large, long, not much curved, the 

 inner surface with numerous tubercles, a few spinous ones near the 

 base, sparsely pilose. Coxae of the second pair of feet produced into a 

 long, parallel appendage, the tip rounded, very sparsely pilose. Geni- 

 talia fully exposed, composed of three pieces; anterior plate moderately 

 long, round, slightly twisted, the end scarcely clavate, turning out- 

 wards, densely pilose: middle plate large and thin, forming a tube; 

 posterior plate sickle-shaped, the end bifid, inner or under edge strongly 

 serrated, a thin lanceolate spine springing from the base. Flagellum 

 not detected. Length of body, 18-32"""; width, 1.8-2""". 



Habitat. — Georgia, Illinois. Indiana, Michigan, and Minnesota. 



I have examined specimens of this species from Ludington, Michigan, 

 and Chauucey, Indiana: those from the latter place are larger and 

 darker in color. 



Wood's plate of the genitalia does not show the serrations, etc., of the 

 posterior plate, nor the true form of the middle plates. 



Specimens not adult vary as follows: 



Length. 



Width. 



Segments. 



Tails ill 

 feet. 



Ocelli. 



in m. 



mm. 









10.4 



.'.) 



48 



7:; 



30-6 



!>. (i 



.85 



47 



70 



20-0 



11.2 



. 92 



40 



i.i 



27 o 



11.8 



.!> 



45 



05 



38-7 



s. :i 



. 75 



40 



" 



22-5 



12. Parajulus ellipticus, *)>. nov. 



Color almost similar to that of '/. impressus, but darker, feet pale. 

 Moderately robust, not smooth or pilose, shining, somewhat attenuated 

 before. Vertex smooth, a median sulcus, setigerous foveohe present. 

 Antenna? not equaling width of body, densely pilose. Eyes distinct, 

 almost elliptical, ocelli somewhat crowded, 10-18, arranged in G-8 series. 

 Segments, 17. First segment moderately large, sides striate. Other 

 segments rather deeply striate, rough, with numerous short wavy strhe. 

 Last segment produced into a moderately large, robust sphie, projecting 

 beyond the anal valves, sparsely pilose; anal valves smooth, not mar- 

 ginate, sparsely pilose; anal scale obtusely triangular, rather large. 

 Repugnatorial pore small, not touching transverse suture, which is 



