THE MYRIAPODA OF NORTH AMERICA. 49 



6. Spirobolus pensacolee, sp. uov. 



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

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

 than iu mar</in(itun. Moderately robust, attenuated before, the twelve 

 anterior segments somewhat flattened or crassate beneath, not smooth. 

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

 tween the eyes, median snleus interrupted; elypealfoveohe S. Antenna' 

 abort, 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 ntniint><8. Other segments moderately rough, pnnctations 

 most numerous on the posterior division; stria? 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. Paiis of 

 feet, Ol>, moderately extending beyond the sides of the body. Length 

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



Habitat. Fensacola, Florida. 



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

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



From mai-filiitthtu this species is easily separated by the distinct atten- 

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

 the ocelli, and color. 



7. Spirobolus uncigerus Wood. 



Spirobolus nci</<r>ix Wood, Pror. Acnd. Nat. Sri. Phila., 15, 18til (California). 

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

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

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

 Vertex moderately smooth, distinct reticulating lines, sparsely punc- 

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

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

 subtriangular : ocelli, 32, arranged in 7 series. Segments, 40. First 

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

 rough, densely punctate; second segment moderately produced be 

 ueath, 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. Kepiignatorial pore moderately 

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

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

 Mttlr: coxa 1 of the third pair of feet produced from beneath into a long, 

 spa'tulate appendage. Ventral plate moderately pioduced in the mid- 

 dle into a sharp point, (ienitalia: inner part of the anterior plate 

 2007 No.- -4 



