OF NATURAL HISTORY. 609 



6. A. LINEATULUS.— Black ; anterior pairs of feet lioney- 

 yellow; tergum with minute lines. 



Inhabits Indiana. 



Body black, sparsely punctured : palpi whitish : thorax with 

 two deeply impressed lines, uniting behind : wings hyaline : ner- 

 vures fuscous : scutel at base with a dilated indentation : meta- 

 thorax with raised lines : abdomen gradually tapering to the 

 base: tergum on the three basal joints, with numerous, small, 

 longitudinal, raised lines ; fourth and following segments with 

 much more minute transverse ones : feet, anterior pairs entirely 

 honey-yellow ; posterior pair black, the incisures yellowish ; pos- 

 terior tarsi yellowish. 



Length % over one-fourth of an inch. 



This has some resemblance to meUipes nob., which, however, 

 has the posterior thighs thickened and with an obvious tooth on 

 their inferior edge. 



The lineations of the tergum of the three basal segments dis- 

 tinguish this species. 



7. A. DIVARICATUS. — Black ; tergum with two oblique, im- 

 pressed lines on each segment. 



Inhabits Florida. [245] 



Body black : wings with fuscous nervures, dull yellowish to- 

 wards the base : abdomen nearly sessile, minutely and densely 

 punctured ; first segment with two longitudinal, elevated lines ; 

 second, third and fourth each with two very obvious, impressed 

 lines, originating at the base and divaricating towards the pos- 

 terior angles : feet honey-yellow : posterior pair, thighs at tip, 

 tibia; at tip and annulus near the base, and posterior halves of the 

 tarsal joints black. 



Length over two-fifths of an inch. 



Has considerable resemblance to Ichneumon inquisitor nob., but 

 the impressed lines of the tergum are very obli(iue, and the 

 wings are destitute of the small second cubital cellule. 



8. A. EMARGINATUS nob. Contrib. Macl. Lyceum, p. 76.— 

 This species is very remarkable by the prominence of the head 

 in front of the insertion of the antennae, which hence appear to 

 be situated in a deep foveola j this character, together with the 

 1835.] 



