50 FORMICJD.E. 



and covering the bases of the antennae ; these latter 12-jointed, 

 slender, filiform ; eyes remarkably large and prominent, their 

 lower orbits reaching right down to the base of the mandibles. 

 Thorax elongate, depressed and slightly laterally compressed, the 

 pro-mesonotal suture remarkably broad and shallow, crenulate 

 posteriorly ; meso-metanotal suture obsolete above ; posterior face 

 of the metanoturn truncate, slightly concave ; legs long and slender. 

 Pedicel one-jointed, cylindrical, narrowed anteriorly, vertically 

 truncate posteriorly ; abdomen cylindrical, the constriction between 

 the basal two segments very distinct ; sting exserted, powerful. 



$ . Very similar to the $ , slightly larger ; pro- and mesonotum 

 subequal. 



c? . " Wings with two or three closed cubital, two discoidal, and 

 a radial cell. Mandibles somewhat rudimentary. Antennas long, 

 filiform, with the 1st joint of the flagellum short, about as broad as 

 long. Clypeus broad, trapeziform. Frontal area very large, tri- 

 angular. The antennae are inserted behind the frontal area, at 

 the sides of the antennal carinse, which are very short, close 

 together, and placed entirely behind the frontal area. Mesonotum 

 with two strong convergent furrows. Maxillary palpi with at 

 least 5 joints. Pygidium terminated in a long and acute point." 

 (Ford.) 



There are only two species of this genus known, both found 

 within our limits. Like Odontomachus, Drepanognaihus when 

 startled and disturbed makes the most astonishing leaps, but, so 

 far as my observations go, the species of neither of the two genera, 

 unless disturbed or startled, leap as a mode of locomotion. 



Key to the Species. 



a. Head, thorax and abdomen not concolorous .... D. saltator, p. 50. 



b. Head, thorax and abdomen concolorous D. venator, p. 51. 



59. DrepanognathllS saltator, Jcrdon (Harpegnatlms), Madr. Jour. 



Lit. < Sci. xvii (1851), p. 117, . 



Drepauognathus cruentatus, Smith, Cat. vi (1858), p. 82, . 

 Harpegnathus saltator et cruentatus, Forel, Jour. Bomb. N. II. 8oc. 

 xhi (1900), pp. 63 & 65, $ rf . 



$ . Head, thorax and pedicel ferruginous red, closely and 

 rather coarsely punctured, granulate ; abdomen black, shining, not 

 granulate, with punctures finer and more scattered ; mandibles, 

 antennae and legs yellow ; the whole insect covered with short, 

 sparse, erect pale hairs, and a minute, fine, sericeous shining pu- 

 bescence on the mandibles, head, antenna 1 , thorax and legs, visible 

 only in certain lights. For the rest the characters of the genus. 



$ . Similar to the $ ; the ocelli placed very low down, almost 

 in the middle of the front of the head. 



c? . " Mandibles short, triangular, rather wide, but not elongate. 

 Head somewhat longer than broad, strongly constricted behind 

 the eyes and up to the occipital articulation. Concavity in front 



