151 ' 



apex more or less enlarged, encircled by two arcuate extensions curving 

 in toward its enlarged ti{), which with them forms a more or less distinct 

 broken semicircle, the upper arc bordering the whitish V-mark; a taper- 

 ing extension toward the ocelli, and below this a blunt extension. 

 Clypeus whitish; anterior margin of front and the labrmn and mandibles 

 usually dark. Ocelli six, about equal, three in a vertical row behind 

 the antenna, the upper two of these closer together; one behind the 

 lowermost; and a horizontal and more distant pair above and slightly 

 behind the vertical row. Antennas four-jointed, first two joints large 

 and subequal in length, second bearing on inner side of apex the very 

 small third, fourth joint minute. Labrum about twice wider than long, 

 consisting of two rounded lobes separated by a deep V-shaped notch; 

 a U-shaped carina encircles the notch, and each lobe is obtusely ridged 

 centrally. Palpi two-jointed. Mandibles with latero-dorsal ridge ending 

 in a saw-tooth on the broad cutting edge, which bears several smaller 

 similar teeth, fading out downwards, one above the ridge-tooth. 

 Lal)ium styliform, straight, about as long as fore tarsus and its claw 

 combined. 



Cervical shield well developed, smooth, markings consisting of pale 

 median line, darker hind margin, dark setiferous points and a dark 

 dot near the lateral margin. Posterior pair of dorsal spots united or 

 contiguous on three succeeding segments; a large dark one on each side 

 below cervical shield, deeply emarginate to receive the spiracle. Legs 

 yellowish to black above, ending in an appendiculate 

 claw. ^^^^ 



False feet (Fig. 137) short-cylindrical, bearing a ^T^^'-' jMi 

 complete ring of about fifty hooks with adnate bases, ^isKSS^^^^ K 

 the smallest irregularly alternating wnth one or two \ '^!J,'' 



others approximately two, three, or four times as fig. 137. Foot of 

 large. Their dark chitinous bases all begin at the iS.°^EniaSd! '"" 

 outer margin and extend inwards, the nearly vertical 

 moderately arcuate hook rising from their inner ends, and half to two 

 thirds as long as the base. Ring of posterior pair open behind. Anal 

 shield subtriangular. On the leg-bearing segments a small black 

 cicatrix behind the spiracle, and one on the inner j^art of the anterior 

 dorsal corneous spot, also certain other variable small smooth scars 

 near the spiracle. 



Three other larvse in the collection, taken from grass and supposed 

 to be Crambus, probal)ly represent some other genus of this or a related 

 family. The surface is microscopically densely wavy-striate, not granu- 

 late; the dorsal corneous spots are more conspicuous than the others, 

 rounded, surroimded l)y a vague pale ring, accessory spots wanting; the 

 head markings differ slightly in form; the anteimae are longer, the labium 

 is shorter and slightly arcuate; and the foot hooks differ only in that 



