326 MYRMELEONITES. 



number of subcostal areolets with double divisions is variable. 

 Length of the body 17 23 lines ; of the wings 56 68 lines. 



a. b. Sierra Leone. Presented by the Rev. D. F. Morgan. 



43. MYRMELEON IMPROBUS. 



Niger ) robustus ; caput testaceum ; palpi nigri, labiates apice ru- 

 fescentes ; antennce subclavatcB ; thorax testaceo bivittatus ; 

 abdomen maris piceum elongato-fusiforme, famines longius 

 linear e nigro -piceum testaceo varium; femora famines picea ; 

 alee longce, angustce, apice oblique truncatce, anticcefusco gut- 

 tatce ; posticce fusco maculatcc et guttatce. 



Black, rather stout, clothed with white hairs : head testaceous ; 

 vertex whitish testaceous, very convex, with several black dots : 

 palpi black ; labial palpi with reddish tips : antenna black, sub- 

 clavate, little more than half the length of the thorax : prothorax 

 linear, clothed on each side with brown hairs, with a broad testaceous 

 stripe including a black dot on each side ; its length about half its 

 breadth : mesothorax and metathorax clothed on the disk with brown 

 hairs, with two irregular and interrupted testaceous stripes on each 

 side : abdomen of the male pitchy, elongate-fusiform ; joints from 

 the third successively decreasing in length and breadth : appendages 

 straight, long, ferruginous with a black streak on each side, armed 

 on the inner side with short black reverted spines: abdomen of the 

 female pitchy black, linear, compressed, longer than that of the 

 male, with testaceous marks along the disk: legs stout; spurs 

 curved, longer than the first joint of the tarsus ; femora of the fe- 

 male ferruginous: wings long and narrow, very slightly convex 

 along the hind border, obliquely truncated at the tips, almost im- 

 perceptibly hooked near the fore borders ; stigma whitish, small, 

 indistinct ; veins black, here and there with testaceous bands, or 

 wholly testaceous, or white ; marginal region broad at the tips of 

 the wings : fore-wings of the male very pale brown, with a few small 

 limpid spaces, covered with numerous brown dots, which are most 

 prevalent on the hind border, and along the middle of the disk and 

 near the tip of the fore border, where they are larger and darker 

 and partly confluent ; subcostal areolets divided by a single row of 

 oblique transverse veinlets ; a double row on one, or occasionally on 

 three near the base : hind-wings subhyaline, very little shorter and 

 not narrower than the fore wings, with various brown dots along the 

 hind border from half the length to the tip where the dots extend to 

 the disk, with a brown streak along the truncated part, with another 



