Aor/// ^imicricKii Jiilidw. 41 



giite, tJic seventh and third joints subequal. Male : First pair of legs 

 six-jointed, the third as long as the fourth and fiftJi together, the la&t 

 short, ver)^ bhint, unarmed ; genitalia about half covered. 



From any of our Kortli American geiK-ra this may hQ separated 

 \)\ the dorsal carina?, the ocelli, and the first pair of legs of the 

 male. 



'J'he only sjjccies belonging to this genns besides the one here 

 described, is Cawbalu noduhsa Butler, from the Island of Rod- 

 riguez. 



19. CAMBALA ANNULATA (Say). 



Juli/^Hnntfldtifs Si\y, Journ. Acad. Nat. Sci. Philn., 108, 1821. 



Camhala aniitil((ta Cope. Proc. Amer. Philos. Soc, 181. 1869. 



Light 5'ellowisli brown, a lateral row of dark brown spots, carinse brown, 

 a dark line between eyes, feet and antennas pale. Slender, cylindrical, 

 not tapering, carinated. not pilose. Vertex without a median sulcus 

 and setigerous foveoloe. Antennae short, subclavate, about equal to 

 width of body, densely pilose. Ej^es distinct ; ocelli 4-6, arranged 

 in one line. Segments, 50-65. First segment large, sides marginate, 

 posterior border with an indistinct row of carina?. Other segments 

 deeply sulcate, carinae acute, anterior part of the segments with tine 

 elevated lines. Last segment rounded, smooth, not pilose ; anal 

 valves scarcely marginate, smooth, pilose ; anal scale moderate, 

 rounded, pilose. Pairs of feet, 70-112, rather stout, equaling the 

 width of body, sparsely pilose. Male: First pair of feet short, last 

 joint blunt, unarmed, a little curved ; second pair somewhat longer, 

 armed. Genitalia nearh' covered ; anterior plate with the edge turned 

 backw^ard, the inner especially, ."round which curves the flagellum, 

 end of plate divided into two lobes, pilose ; posterior plate contorted, 

 divided into two short, thickened lobes, the anterior short and bent at 

 a right angle to the plate, posterior moderatelj' long, a little falciform, 

 pilose. Flagellum verj" long, curving around in front of the anterior 

 plate. Length of body, 26-88 nmi.; width, 1.5-2 mm. 



Habitat, Indiana, Virginia, Kentucky, Tennessee and North 

 Carolina. 



8i)ecimens not iidult vjiry as follows : 



Pairs of 



Length, Width. Segments^ Feet 



17.5 mm. 1.2 mm. 45 77 



13.5 mm. 1 mm. 43 67 



16 mm. 1 mm. 34 50 



