378 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 9 



revive him having proved futile. Unfortunately for the completeness of the data, 

 he was not under observation during this period. The fumigant had been used so 

 frequently without any untoward results, both by Professor Moore and ourselves, 

 that nothing of the sort was anticipated. 



An autopsy was held, not only for the purpose of noting any possible effects of the 

 gas but because we expected to find that the death of the animal was due to the 

 bursting of a blood-vessel or similar injury, during some unnoted struggle. Nothing 

 of the sort was found. In fact, there was not the slightest trace of inflammation 

 which could have been attributed to the effect of the gas. 



On the other hand, we found between the liver and the diaphragm, two specimens 

 of the giant nematode, Dioctophyme renale {Eustrongylus gigas). The liver tissue in 

 their immediate neighborhood was diseased, the entire inner face of the diaphragm 

 was festooned with an organized exudate, and there was a general, acute peritonitis. 

 Mr. Chandler and I shall present a more detailed report of these conditions elsewhere. 



It is sufficient to say here that the real cause of the death of the animal was the 

 presence of the parasites. Nevertheless, the experience served to emphasize what 

 I pointed out at the time the paper was first presented. We need additional data 

 regarding the effect of the gas under different physical conditions of the animals 

 and even when that is known, we maj' have to allow for individual idiosyncrasies. 

 For the present, experimenters may find it advisable to use less valuable animals 

 than o\a victim. 



Wm. a. Riley, 

 Cornell University. 



Gonepteryx rhamni Linn, and Castnia therapon Koll. in New Jersey. Gonepteryx 

 rhamni Linn. (Lep.). An almost perfect female of this species, known as the Brim- 

 stone Butterfly, was taken at Rutherford, N. J., during the early part of December, 

 1915, from a case of French shrubs. It had evidently emerged on the way over, 

 probably only a short time before the box was unpacked, as it was in a fairlj^ fresh 

 condition. W. F. Kirby in "European Butterflies and Moths" states that "the but- 

 terfly abounds in and near woods in most parts of Europe, Asia and North Africa 

 . . , common in the south of England . . . unkno'mi in Scotland . . . 

 and the only certain locality in Ireland is Killai'ney." Seitz, in " Macrolepidoptera 

 of the World, Palearctic Butterflies," Vol. I, p. 60, figures a male and female and 

 states that "it inhabits the whole Palearctic Region with the exception of most north- 

 ern districts and the Canaries, occurring also in North India as a slightly modified 

 local form." The larva feeds on buckthorn from May to July. The female found 

 in the French stock was taken from a bundle of Cotoneaster inicrophilla which is also 

 a thorny shrub. Castnia therapon Koll. (Lep.). Dm-ing January', 1916, orchids 

 growing in a greenhouse at Bound Brook, N. J., were found to be infested by a lepi- 

 dopterous larva which bored through the rhizome and up into the bulb, doing, of 

 course, "considerable damage. The greenhouse man was interested enough to save 

 two pupa; which he found in the infested plants, from which later emerged specimens 

 of Castnia therapon Koll. (identified by Mr. F. E. Watson). A brief account of this 

 insect together with a figure can be found in Seitz's ^Macrolepidoptera of the V>'orld 

 (Vol. VI, p. 12, plate 7, a) which gives Brazil as its native home and Oncidium cris- 

 pum and Catasetum sp., as food plants. An additional species of orchid can now be 

 listed, namely Catileya labiata, this being the plant found infested at Bound Brook. 

 These orchids came original^ from Pernambuco and were undoubtedly infested at 

 the time of their arrival. This insect occurs also in other New Jersey orchid houses 

 but in a very limited waj'. 



Haery B. Weiss, 

 New Brunswick, N. J, 



