* 

 THE MYRIAPODA OF NORTH AMERICA. 195 



Male: Coxa- of third and fourth pairs of legs produced into short, 

 blunt, rounded lobes, that of the third more slender; femur of third and 

 fourth with an oval swelling, that of third largest; ventral part of tin- 

 posterior half of seventh segment produced into a short triangular 

 plate. Segments 50. Length, 55 mni ; width, 5""". 



This species is described from a broken male specimen. The copu- 

 lation foot was not taken out, but what I could see resembles that of 

 cmidatitH and hcilprini. I have named this species after its collector, 

 Mr. A. Duges. 



8. Spirostreptus otomitus (Saussure). 



1859. Jnlns otomitus Saussure. Linu. Ent., :!:!<> (<'<'<1nni, Ifru Cruz, <S Andn*, 



Tiixtltt, Mexico). 

 1884. Spirostreptus otomitus Preudhomme do Borre. Aim. Soc. Ent. JBelg., 69. 



Ace. 19811. Truxillo, Hoiulurcas; C. H. Townsend. 9. 



Number of segments, 03; ocelli 42-5; autemue reaching third seg- 

 ment; length, 55"""; width, 3.2""". 



9. Spirostreptus surinamensis Brandt. 



1841. Spirostreptus surinamensis Brandt. Rccucil, 10S (Surinam). 

 1847. Inlttx siiriiHiiiH'tmix (icrvais. Anti-res, IV, 185. 



Ace. 14420, New Granada, West Indira; I". S. Fish C'omm. Male and female. 



Dark brown, anterior part of segments yellowish; antenna- and legs 

 reddish brown. Robust, anterior segments somewhat attenuated. 

 Vertex, especially along margin of first dorsal plate, rough, longi- 

 tudinal and transverse sulci distinct; clypeus very rough, emargina- 

 tion shallow. Antenme reaching third segment in both sexes. Ocelli 

 05-70, in 7 series, arranged in an elongate-oval patch. Segments 

 scarcely segmented, appearing smooth and shining, but densely and 

 very lightly punctate; anterior part with a few concentric stria'; pos- 

 terior striate beneath, strhe disappearing before pore and forming a 

 row of dot-like marks. Lateral part of first segment tetragonal, slightly 

 produced anteriorly in the male, about 7 distinct sulci. Anal segment 

 obtusely angled, a transverse sulcus; anal valves strongly margined, 

 convex; anal scale almost transverse. Repugnatorial pore small, 

 placed about on anterior third of posterior part. Legs long, extending 

 beyond sides of body. Segments, male, 02; female, 05. 



Male: Legs stouter than those of female; first and second tarsal. joints 

 with pads; these disappear about the thirtieth segment; ventral plate 

 of copulation foot very small, convex, sulcate, its base concave; ante- 

 rior copulation foot curled around basal part of posteiior, which runs 

 along its anterior surface, end expanded and rounded, with a black, 

 short, pointed, upward and backward projecting lobe at its upper 

 exterior angle, its anterior surface corrugated, that part which curls 

 around posterior foot corrugated and with a few short bristles; posterior 

 foot appearing at upper third of anterior, decurved along its outer edge, 



