of certain species of Willow. — Part 2nd. 271 



One $ , bred June 2 from the Coleopterous Pseudo-gall S. inornata 

 n. sp.; 9 unknown. On July 4 from a rough, black, woody, undescribed, 

 polythalamoua twig-gall occurring sparingly and sparsely, (not abun- 

 dantly and locally like Q. podayrse Walsh,) both on the Black and 

 Bed Oaks, (being the same gall from which I bred the Gall-fly refer- 

 red to by Osten Sacken, Proc. etc. IV, p. 3G5, note,) I bred a % dif- 

 fering from the above only in having the collar slenderly yellow and 

 the extreme tip of the central hairs of the caudal brush distinctly yel- 

 low. From a very similar rough, black, woody gall (?), occurring locally 

 and abundantly on the twigs of the Pignut Hickory — the origin of 

 which gall (?) I cannot at present ascertain*- — -I also bred many years ago 

 a damaged $ specimen, which agrees with tha^bred from the Oak-gall 

 in the characters which separate it from hospes. Whether these two 

 last be a mere variety of hospes or a distinct species, can only be shown 

 by additional £ specimens.*}" Hospes differs from the description of pyri 

 Harris by the silvery-white orbits and face, by the basal joint of the 

 antenna? being yellow beneath, by the collar not being yellow, (though 

 it is so in the Oak-gall specimen,) and by the yellow band on the mid- 

 dle of the abdomen being as narrow as in tipuliforme, not -'broad," as 

 it is described by Harris, or proportionally thrice as broad as in tipuli- 

 forme as it is figured in Harris's Injurious Insects. (Plate V, fig. 5.) 

 From the description of scitulum Harris it differs precisely in the 

 same way, except that that species is described as having "the front 

 and orbits covered with silvery-white hairs." I notice that tipuliforme 

 has the interior orbits silvery-white, though Harris, as quoted by Mor- 

 ris, (Synops. p. 140,) omits this character in his description. Possi- 

 bly, therefore, he may have omitted it also in pyri. But, judging from 

 tipuliforme % 9 and exitiosum 9 , the width of the abdominal yellow 

 bands is in this genus a pretty constant character. 



Family NoctuadyE. 



A most surprisingly variable species, as yet undescribed, and ex- 

 panding only .47 — .69 inch, which was originally thought by Dr. Cle- 



* Baron Osten Sacken, to win mi I have sent sj^ecimens, thinks that it is a fun- 

 gus. 



f On Oct. 4, 1866 I bred what is- apparently the 9 of hospes from the woody 

 excrescence on the Pignut Hickory of the same year's growth. It differs from 

 the described % only as follows: — 1st. The orbits are narrow, not wide. 2nd. 

 The first joint of the antennae is immaculate. 3rd. The yellow ventral spot is 

 only about half as long. 4th. The lateral fasciculus of the caudal brush, as 

 usual in 9 Trochilium, is much shorter and thinner, but it is still distinctly yel- 

 low on its exterior half. Length 9—0 inch. Expanse 9-50 inch. 



