378 The Ohio Naturalist. [Vol. VIII, No. 8, 



similar bristles on the underside as the middle femora, about one 

 third longer than tibiae, these about two and a half times as long 

 again as the tarsi; first tarsal joint usually a little longer than 

 second. Length, 6" 2-2, 2 mm., 9 2, 6-2, 9 mm. 



Male: head, pronotum and mesonotum together longer than 

 the rest of the body ; first antennal joint as long as head, incras- 

 sated and compressed and with a submedian spine on the upper 

 and under side, the apical part upturned with a tuft of hairs on 

 the inner side of the tip, the upper margin of the joint almost 

 straight from the base to beyond the middle, the lower margin 

 angularly dilated, second joint inserted at right angles to the 

 fore side of the apex of the first joint, third joint shorter than first 

 with the short basal part narrower than the second joint, straight 

 and linear, then moderately and suddenly incrassated but not 

 dilated and proceeding in a gentle curve to the apex, the curved 

 apical part occupying more than two-thirds of the joint and pro- 

 vided on the posterior side with a very shallowly impressed spongy 

 surface with some stiff hairs on the lower margin and a tooth-like 

 projection at the base, fourth joint a little longer than third, 

 inserted at right angles to the backside of the apex of the third 

 joint, unarmed, shortly pilose, rectangularly curved not far 

 from the base (fig. 4) ; fore femora very slightly thickened towards 

 the base; middle femora as long as hind femora, sHghtly curved 

 and incrassated towards the base and with a spine on the inner 

 side not far from the apex and a very short acute spur on the same 

 side immediately before the apex, middle tibiae subsemicircularly 

 curved at the base, turning the convexity of the curve outward, 

 with a tuft of short hairs on the inner side of the tip of the curve, 

 from which point to the apex the tibiae are straight with some 

 rather short straight hairs on the outer side of the middle part 

 (fig. 5) ; hind legs straight, simple, three fourths longer than the 

 body, the tip of the abdomen sHghtly passing the base of the hind 

 femora when they are stretched straightly backwards. 



Female: head, pronotum and mesonotum together shorter 

 than the rest of the body; antennae simple, linear, first joint a 

 little shorter than the head, third joint a little longer than first 

 with a few rather long and stiff hairs on the inner side near the 

 base and apex, fourth joint as long as third; fore femora linear; 

 middle legs straight, simple, femora longer than hind femora, 

 tibiae a little shorter than femora and longer than tarsi ; hind legs 

 as long as the body, the tip of the abdomen reaching the apical 

 fourth of the hind femora when they are stretched straightly 

 backwards. 



Four males, numerous females and some larvae from Puerto 

 Barrios. No winged specimens were taken. The genus Rheu- 

 matobates was not previously known from Central America. 



