PARKER: MOW KNCI.AM) SARCOI'HAGIDAK. «»1 
metacephalon, except anterior lower eoriu-rs, clothed witli whitish or 
faintly yellowish haii-. Genac with a row f)f inimite hairs near lower 
eye orbit, often intlistiii<,aiishaltle on small specimens. Palj)i dark. 
Chdciotaxy. — Lateral verticals absent; vihrissae on a line with oral 
margin. 
Thok.w. — Sntnral ridge hare. Hairs covering anterior spiracle 
light colored, mostly grayish; those on anterior margin of posterior 
spiracles hrowiiish, outwardly tinged with yellow; or only brownish 
at very base; spiracular cover pale yellow. 
Wings. — Bend of fom'th vein normally a right angle; anterior 
cross-vein behind end of first longitudinal; first and third veins 
bristly; costal spine short or inconspicuous; section V of costa alxjut 
one and one half times section III; alulae with fringe of short hairs; 
calypters whitish, outwardly fringed with white hair. 
Legs. — Dark; posterior trochanter without 'brush'; femur si)indle- 
shaped; anterior face typically with two rows of bristles, an upper 
and a lower, if intermediate row is present, it is vestigial; tibia 
usually straight; tarsus ec^iial in length to tibia. Middle coxa with a 
single row of bristles; femur with short inconspicuous 'comb'; sub- 
mesotibial bristle absent. Anterior coxa with two rows of bristles. 
Chaetotaxy. — Anterior dorsocentrals considerably longer than 
vestiture of prescutum and as long as or longer than anterior post- 
suturals; inner presuturals absent; four pairs posterior dorsocentrals, 
last two pairs the longest; prescutellar acrostichals present; three 
sternopleurals. 
Abdomen. — Lamellae of fourth ventral plate without ' brushes ' 
and widely separated by a L -.shaped space; in profile posterior ends of 
inner margins are seen turned downward and bearing short hairs 
(this does not show in figure, which is ventral view.) 
Chaetotaxy. — Second segment with complete marginal row of Ijristle- 
like hairs; third with a corresponding row of slender bristles, the two 
central ones often the longest; fourth with complete row of bristles 
ending ventrally at forward turn of margin. 
Genital segments. — First, gray poUinose, except ' humps ' which 
may be darkened, the dull orange ground color may show at sides; 
vestiture minute, scattered, often hardly discernible; outline in profile 
slightly convex; second, dull or brownish orange. Forceps prongs 
separated from near base, curved ys'ell apart, tips convergent. 
Genitalia. — Posterior plate of penis not knobbed at tip, but 
