XXXI. ARPACTUS,. 221 
4+4 The name is derived from cpmaxtis—cpmratw, to 
plunder, in allusion to its predatory habits; it should 
therefore be written Harpactus. The genus is suffi- 
ciently distinguished from Grorytes, in having but three 
submarginal cells, and the antenne of the ¢ not longer 
than those of the g. Nature seems also to have separated 
them by colour; for more or less red invariably prevails, 
and that colour has not yet been found upon a true Go- 
rytes. 
Sp. 1. travis. Latr. 
niger, thoracis dorso, pedibusque rufis, abdomine fasciis duabus 
albis. 
St. Farg. Ann. de la S. E. de Fr. 1. 74. 1. 
Mutilla levis. Latr. Act. de la Soc. d’Hist. Nat. de Paris, 1. 11, 12. 
Sphex cruenta. Fab. E. S, Sup. 244, 54—55. 
Mellinus cruentatus. Latr. H. N. 13. 318. 1. 
Pompilus cruentus. Panz. 84. 20;, Fab. Piez. 192. 20; Coquebert, 1. 
23. pl. 5. fig. 10. 
Gorytes levis. V.d. Lind. pt. 2. 91.1. 
length 3 lines. 
Head black, punctured, with a white line at the interior of 
the orbits of the eyes; antennze black, piceous beneath ; man- 
dibles rufescent. 
Thorax punctured, red above, black beneath, with the tri- 
angle beyond the scutellum piceous ; the tubercles black ; and a 
spot beneath the origin of the wings red; the wings slightly 
coloured, their nervures piceous; legs black, with the interior 
of the anterior pair fulvous, as well as the intermediate tibie, 
the two anterior and intermediate tarsi piceous ; the tibiz sub- 
spinose. 
Abdomen black, slightly punctured, shining, the margin’ of 
the second segment with a white fascia, waved in the middle, 
dilated at the sides, the margin of the fifth segment also with a 
white fascia ; all the margins slightly depressed ¢. 
