272 Forty-first Report on the State Museum. 



In June of the following year, Professor J. O. Westwood exhibited to the 

 society the perfect insect (a moth) which he had bred from the seeds, and 

 in an accompanying paper described and named as Carpocapsa saltitans. 

 It is shown at c in the figure. 



A few months later, M. Lucas, in ignorance of Professor Westwood's 

 work, in a paper entitled " Observations sur une nouvelle espece de Carpo- 

 capsa, et remarques sur les movements que la chenille de la Lepidoptere 

 imprime a des graines d'une Euphorbe du Mexique, dans lesquelles elle se 

 metamorphose," published in November, of 1858, in the Bevue et Magazin 

 de ZoOlogie — redescribed and named the insect as Carpocapsa Dehaisiana. 

 Under this latter name some examples were exhibited by me and 

 remarked upon at a meeting of the Albany Institute, on October 5, 1875. 



In the Gardener's Chronicle of November 12, 1859 (l. c). Prof. Westwood 

 has given an interesting paper on these seeds, in which they and the moth 

 that they disclose are described and figured. 



Its Generic Helatious. 



The insect belongs to the family of comparatively small moths known as 



Tortricidoe, the larvae of which are mainly "leaf- rollers." Its generic 



relations are of particular interest, since it pertains to the same genus with 



the codling-moth, Carpocapsa pomonella. The larva of the codling-moth 



is the common and well-known apple-worm, which is so very destructive 



to apples in this country and in Europe, tunneling and disfiguring them 



with its excremental-crowded burrows and unsightly "worm-holes." It 



has, however, entirely different habits during its progress to maturity and 



subsequent transformations, nor has it ever shown any jumping 



propensities. 



Its Jumping' Movements. 



The ordinary " jumps " of the C. saltitans are successive leaps of about 

 one-eighth of an inch in length, repeated at intervals of a second or two. 

 At times, however, they are more violent — turning the seed- vessel from 

 one of its flat sides, to its concave surface, spinning it around upon one 

 end, or projecting it, with an irregular rolling motion, to a distance of an 

 inch or more. When held in the hand, the jumps give quite a perceptible 

 impulse to the palm. Placed upon a small table, in a few minutes several 

 will have thrown themselves over its edges upon the floor. If confined 

 in a box, they in a short time become quiet, and no sound is heard from 

 them ; but upon opening and exposing them to the light, the motions are 

 at once moderately resumed. If further disturbed by being turned out 

 upon a table or into the hand, their more violent motions soon commence, 

 and continue for a long time. 



Their peculiar movements are said bj'- Prof. Eiley, to be produced by the 

 larva holding fast to the silk lining of the seed-vessel with its three hinder 

 pairs of strongly hooked abdominal legs, and in this position, with the 

 anterior portion of its body curved upward, violently tapping the walls 

 with its head, sometimes thrown from side to side, but more often brought 

 directly down, as in the motion of a woodpecker's head when tapping for 

 insects. 



