754 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



iu August and September did not begin to give forth the moths in the 

 breeding cages before early January, February, and March, and were 

 greatly hastened without doubt by the heat of the room. On February 

 15, however, a few twigs were collected, from one of which, on Febru- 

 ary 28, a full-grown larva had emerged and was found crawling about 

 the cage. This would seem to indicate occasional larval hibernation. 



"As to remedies, the only one which I can suggest at present is that 

 involving the somewhat arduous task of picking off the infested twigs 

 in early winter and burning them. Whether the salvation of the trees 

 will be worth this labor in greatly infested regions will depend entirely 

 upon their value to those interested." 



75. The pitch-pine retinia. 



Eetinia rigidana Feruald. 



Order Lepidoptera ; family Tortricid^. 



Inhabiting terminal shoots of Pinus rigida, and of similar habits to the Frustrating 

 Retinia, a gray, brown, or blackish larva 8"'™ (J inch) in length, which in its perfect 

 form becomes a small moth with dingy white wings, marked with dark red and sil- 

 very gray. (Comstock.") 



" In the summer and fall of 1879 Mr. S. H. Gage, of Ithaca, N. Y., sent 

 to the department specimens of the pitch-pine containing Tortricid 

 larvae and pupaj, which in their work resemble Retinia frustrana, but 

 differ from that insect in coloration and in being slightly larger. These 

 developed into a moth intermediate in characters between B. frustrana 

 and B. comstocMana, and which has been described by Prof. O. H. 

 Fern aid as follows : 



The moth.— Head sordid white, with a yellowish tinge ; front and palpi inclining 

 more to ashy ; antennje brown, anmilated with white ; thorax above very light gray, 

 washed with dull ocherous; deepening to a coppery tint on the front of the patagia;. 

 Thorax beneath, abdomen, and hind wings above and beneath, and fore wings be- 

 neath light gray with a silky luster ; fringes of the hind wings lighter, with a line 

 near the base concolorous with the wings. 



Fore wings above sordid white, with a basal patch occupying the basal fourth of 

 the wing, composed of about four irregular cross streaks of dark red, alternating 

 with similar streaks of silvery gray, the outer red streak sending out a tooth on the 

 fold. The light space following the basal patch has several small gray costal spots, 

 from which light ocherous streaks extend across the wing. A dark-red band extends 

 across the wing beyond the middle, divided on the costa by a geminate white spot. 

 Below the cell the basal half of the red band is replaced by stripes of light ocher 

 yellow and silver white; the remaining portion of the red band below the cell is 

 curved outwardly, making this part convex on the outside and concave on the side 

 towards the base. The apical portion of the wing is dark red, changing to bright 

 ocher yellow inwardly, and towards the anal angle divided by a subterminal gemi- 

 nate broken line of silvery scales, extending from the costa to the anal angle. Fringe 

 reddish purple. The costa from the basal patch to the terminal band is marked with 

 geminate white spots alternating with gray. Posterior femora and tibii© very light 



