302 HARRISON G. DYAR. 



Fourth stage. — Hearl round, wider tlian hijrli, clypeus large ; width 1.2 mm. 

 Pale greenish, eye black ; a narrow blackish line along median suture and right 

 across the clypeus above; a lateral brownish one above and behind the eye. 

 Thoracic feet moderate, abdominal small, on joints 6-11. 13; segments rather 

 obscurely 4-annulate, shining between the annulets, greenish ; general api)ear- 

 ance not shining, translucent yellowish green, alimentary canal darker, but not 

 contrasting ; no marks nor tubercles. 



Fifth stage. — As before ; widtii of head 1.5 mm. ; aaal processes short, cylindric- 

 truucate, brown tipped. 



Sixth stof/e. — Much as before, but the two .interior annulets are obscurely watery ; 

 width of head the same ; tJie larvfe enter the earth to form their cocoons. 



Food-pla)it. — Locust {RohUda pseudacacia). The larv?e are soli- 

 tary and eat holes in the leaves or sit on the edge of a leaf, as de- 

 picted in the figures copied from Comstock in the Fifth Keport U. S. 

 Ent. Com., p. 369. 



Neinatiis ineiidiciis Walsh. 



Two species with green females were sent to Mr. ^larlatt and de- 

 termined as mendicus. The larvse are not inquilines, but Mr. Mar- 

 latt states that Walsh's conclusions are not improbably founded 

 upon error. Therefore, I will describe the first larva under this 

 name, as it feeds on willow. The other is different, the fly also is 

 considerably larger than mendieus, Avith only very slight brownish 

 black marks on vertex of head and on thorax. I distinguish it 

 below as N. jnnguidorsiuii. 



E(j(t. — Laid anywhere on the leaf iu semicircular saw-cuts just under the upper 

 epidermis; cuts 1.5 mm. in diameter. 



First stage. — Head blackish testaceous, shining, eye and mouth black ; higher 

 than the body; width .3 mm Body indistinctly 4-annulate, not very shining, 

 greenish. Thoracic feet and anal prongs blackish ; abdominal feet on joints 6-11 

 and 13. 



Second .sfage. — Head dull testaceous, a blackish longitudinal line at the vertex, 

 one upward from each ocellus; eye black, mouth brown: width .55 mm. Body 

 dull greenish, thoracic feet concolorous; a faint blackish tinge above spiracles 

 and a little on subventral ridge on joints 2-4, pale along dorsal line : posterior 

 portion of the body curved under so as to tou(^h the venter; anal prongs blackish. 



Third stage. — Head rounded, flattened before, pale green, faintly brownish 

 tinged; a black longitudinal line over the vertex, reaching top of clypeus: a 

 lateral transverse line over ocellus, not quite reaching vertex ; mouth brown ; 

 width .9 ram. Body soft, leaf green, a faint blackish dorsal and substigniatal 

 shade line : venter a shade paler. Feet small, green ; anal prongs blackish. Body 

 scarcely annulate, not shining; tracheae showing as a white line. 



Fourth stage. — Head clear green, marked as before, the marks clouded, not so 

 black as ocelli; an additional patch at apex of clypeus; width 1.15 mm. Body 

 uniform leaf green, not shining, except in the creases of the annulets ; feet clear, 



