126 NEW YORK STATE MUSEUM 



Another interesting feature connected with these tips was the illustra- 

 tion they gave of the manner in which woody structure is built up — the 

 sap ascending through the sap wood, and after its assimilation in the 

 leaves, returning through the inner bark and depositing its organized 

 material. The bark above the girdling in healing in a rough and irregular 

 manner, had swollen out at this point in a bulbous-like enlargement, 

 showing very clearly the arrest and deposit of the returning sap conse- 

 quent on the absence of its natural channels, and the drying and the 

 death of the decorticated wood below it. In a specimen gathered in 

 which the node of the preceding year remained attached to the fallen 

 twig, the diameter of the new growth above the bulb was at least twice 

 that of the starved node below.* 



This peculiar form of Orgyia attack has not been seen upon the horse- 

 chestnut, maple, apple or plum, or on any of its other food-plants. 



Eudioptis nitidalis (Cramer). 

 The Pickle Caterpillar. 



(Order Lepidoptera : Family Pyraustid^.) 



Phalana nitidalis. Cramer: Pap. Exot. trois part, du monde, iv, 1782, 



-371F." 

 Phalcvna nitidalis. Fabricius : Ent. Syst., Tom. iii, pars II, 1794, p. 228 



(habitat Austria). 

 Phakellura nitidalis. Guenee: Hist. Nat. Ins. — Lepidop., 1854, viii, 



p. 299 (descr., food-plants, and distribution). 

 Phakellura nitidalis. Walsh-Riley: in Amer. Ent., ii, 1869, p. 31 (in- 

 juring cucumbers at Alton, 111., and Peverly, Mo.), do. p. 61 (at 



St. Joseph, Mich.). 

 Phacelliira nitidalis. Riley : 2nd. Rept. Ins. Mo., 1870, pp. 64-70, fig. 43 



(larva described, natural history, distribution). 

 Phakellura nitidalis. Glover: in Rept. U. S. Comm. Agr. for 1870, 



p. 84, fig. 47 (injuring squash in Fla., and cucumbers in Mo.). 

 Phacellura nitidalis. Snow : in Trans. Kans. Acad. Sci., iv, 1875, p. 56 



(injures cucumbers); in Observer of Nature, iii, no. 5, 1876, 



p. 4 (not common in Kans.). 

 Phacellura Jiitidalis. Packard : in Hayden's 9th Rept. G.-G. Surv. 



Terr., 1877, p. 772, fig. 41 (brief account after Riley). 

 Phacellura nitidalis . French: in Trans. 111. State Hort. Soc. for 1877, 



1878, pp. 199-200; i[i 7th Rept, Ins. 111., 1878, pp. 251-252 



(brief notice). 



* This bulbous enlargement is illustrated in figure 15 of the Second Report on the Insects 0/ 

 Nezu i'ork, 18S5. 



