THE CANADIAN ENTOMOLOGIST. 



About two-thirds of the larvae in July and all in August and September, 

 went into lethargy immediately after third moult, shrinking to the length 

 of .24 and even to .2-inch, and becoming wider in the middle ; the rows 

 of spines were brought close together, with no visible interspaces. 

 But a few of the larvae in July went on to fourth moult and pupation. 

 With these the duration of the stage was about three days. 



After fourth moult: length, .5 inch; of three larvae, all were black, 

 with red-fulvous dorsal band. Probably in a large number the colours 

 would be quite as variable as after third moult. 



Mature Larva. — Length, .8 inch. Colour (of three examples under 

 view), deep black, specked with white or yellow-white ; a red-fulvous mid- 

 dorsal band from 2 to 13, sometimes widening on 2, interrupted by the 

 tubercles after 4 ; along the lower half of side the black ground is much 

 mottled with white, so as to have the effect of a white band, and on either 

 edge is a macular white line, most complete on the upper ; the spines, as 

 in the genus, rising from shining black tubercles, and are concolored with 

 them, tapering to a blunt point, out of which springs a straight short 

 bristle, and there are many such about the sides from top to base ; under 

 side gray-brown ; the feet black, pro-legs gray-bro^vn ; head obovoid, bi- 

 lobed, shining black, with many short curved-down black hairs from black 

 tubercles. From fourth moult to pupation about six days. 



Chrysalis. — Length, .54 inch ; shape of T/iaros, and resembling that 

 species at all points ; head case narrow, excavated at the sides, nearly 

 square at top, a very little depressed ; mesonotum rather prominent, not 

 carinated, the summit rounded, the sides a little incurved ; followed by a 

 shallow depression ; the abdominal segments somewhat raised anteriorly 

 and compressed into a low and narrow transverse ridge, which reaches 

 from one sub-dorsal tubercle to its fellow, but on 6 and 7 extends one 

 tubercle farther ; in all, the five upper rows of tubercles of the larva are 

 here reproduced, low, conical, buff; general colour white, with pale black 

 markings, specks, and abbreviated lines, so that the effect is gray, or 

 pepper and salt, over the entire dorsal area, and the abdomen ; but the 

 wing cases have a tint of brown ; across these last an extra discal, sinuous 

 row of seven clear white dots ; the antennal cases blackish, with many 

 dull white cross bars. Duration of this stage, eight days. 



Considering what a common species Carlota is over at least one- 

 third of the territory of the United States, it is remarkable that so little 

 has been published respecting it. M. Scudder, Butt. N. E., p. 181 1, says ; 



