THE MYRIAPODA OP NORTH AMERICA. 49 



6. £p : robolus pensacolee, sp. uov. 



Dark green above, segments margined with reddish-brown; face, 

 anterior and posterior segment bright green; feet and antenna' lighter 

 than in marginatus. Moderately robust, attenuated before, the twelve 

 anterior segments somewhat flattened or crassate beneath, not smooth. 

 Vertex smooth, sparsely punctate; punctations not more numerous be- 

 tween the eyes, median salens interrupted ; clypeal foveolae 8. Antennae 

 short, not quite reaching the posterior margin of anterior segment. Eyes 

 distinct, trapezoidal; ocelli, 45, arranged in 7 series. Segments, 49. 

 First segment with the sides subacute, marginate, anterior border 

 sinuate; second segment with the lobe less broad and more triangular 

 than in marginatus. Other segments moderately rough, punctations 

 most numerous on the posterior division; striae decurved, strong and 

 rib-like on the posterior division of the segments. Last segment 

 pointed, not passing the anal valves, densely punctate; anal valves 

 marginate, rough; anal scale rounded. Repugnatorial pore large, 

 placed on the anterior division; suture moderately bent. Pairs of 

 feet, 02, moderately extending beyond the sides of the body. Length 

 of body, 80""" ; width, 9 mm . 



Habitat. — Pensacola, Florida. 



I have had one female of this species for examination. It is more 

 related to marginatus than any other of our North American species. 

 From marginatus this species is easily separated by the distinct atten- 

 uated body, clypeal foveohe, form of second segment, arrangement of 

 the ocelli, and color. t 



7. Spirobolas uncigerus Wood. 



Spirobolns uncigerus Wood, Proc. Acad. Nat. Sci. Pliila., 15, 1864 (California). 

 Dark brown, edge of segments lighter, an indistinct light median 

 line; feet chestnut. Moderately robust, a little crassate, not atten- 

 uated, only a few anterior segments flattened beneath, not smooth. 

 Vertex moderately smooth, distinct reticulating lines, sparsely punc- 

 tate, median sulcus interrupted; clypeal foveohe 8. Antenna 1 short, 

 not reaching the posterior border of anterior segment. Eyes indistinct, 

 subtriaugular ; ocelli, 32, arranged in 7 series. Segments, 49. First 

 segment with the sides acute, marginate, anterior margin excised, 

 rough, densely punctate; second segment moderately produced be- 

 neath, rounded in front. Other segments rough, densely punctate; 

 numerous short lines, stria? strong, not much decurved. Last segment 

 acutely rounded, not passing the anal valves, densely punctate; anal 

 valves marginate; anal scale rounded. Repugnatorial pore moderately 

 large, placed in the anterior part, sulcus extending backwards, deep, 

 transverse suture bent. Pairs of feet, 80, equaling the width of body. 

 Male: coxa' of the third pair of feet produced from beneath into a long, 

 spatulate appendage. Ventral plate moderately pi educed in the mid- 

 dle into a sharp point. Genitalia: inner part of the anterior plate 

 2097— Xo. 4 



