98 THE CANADIAN ENTOMOLOGIST. 



val figures the larva of Mopsus green, witli four white spots above about third 

 or fourth segment, and some vrhite at sides of terminal segments, all very 

 striking in the figiire. He also gives Eupatorium as its food plant. My 

 specimen was entirely different from this, either Boisduval's figure is incorrect 

 or the IIopsus of the south is distinct in its larval state from that of the north. 



Thecla ? (probably calanus, Hiib.). — Larva found feeding on oak 



from 6th to 22nd June. 



Length 0.60 in. Head small, rather flat, bilobed, of a shining brownish- 

 black color with a pale streak down the middle, and a line of white across 

 mandibles above ; mandibles black; head drawn within the second segment 

 when at rest. 



Body above dull greenish-brown with a slight reddish tint, thickly dotted 

 with minute black points invisible to the naked eye, from some of which 

 arise short black or brownish hairs, most nu'.nerous about the extremities and 

 around the edge of body close to under surface. Dorsal region flattened 

 above, with a slightly raised line on each side of a paler reddish-brown, edged 

 without from fifth to ninth segments with greenish-grey ; a dorsal band of 

 darker brown, enlarging to an indistinct patch at each extremity, most promi- 

 nent on hinder segments, and having a series of spots along its centre from 

 fifth to ninth segments inclusive of dull greenish grey, the hinder ones being 

 almost diamond shaped; spaces between segments slightly paler. The sices 

 of body incline abruptly, and are striped with faint oblique lines, of dull 

 greenish-grey. Second segment dull greenish, with many short brown hairs. 

 Close to under surface the larva assumes a reddish brown tint, bordered 

 without by a raised line of dull yellowish or greenish white, extending from 

 the anterior portion of third segment all around the hinder part of body to a 

 corresponding place on the opposite side. 



Under surface pale dull green, with a slight bluish tint, and a few short 

 hairs along each side ; feet pale brown and shining ; prolegs greenish, semi- 

 transparent, faintly tipped with brown. 



June 27. — Larva fastened itself up to lid of box in which it was confined, 

 and completed its change on the 29th. 



July 3. — Chrysalis. Length 0.40 in., greatest width 0.15 in. 



Body dull yellowish brown, slightly glossy, with many streaks and dots of 

 a darker shade of brown ; a dull ventral stripe formed of these spots extends 

 from eighth to eleventh segments inclusive ; a short streak of dark brown 

 down the middle of anterior segments; body thickly covered with very fine 

 short brownish hairs, invisible without a magnifyer. 



More than two years ago I became firmly convinced that the species now 

 known as T. calanus was distinct homfalacer as figured by Boisduval, with 

 which it had hitherto been confounded; and communicated my views on this 



