13 



nection with the grain aphis he mentions the following parasitic or 

 predaceous insects. 



Toxares triticaphis Fitch; Praon avenaphis Fitch; Allotria tritici 

 Fitch, and Allotria avenx Fitch. Of the Coccinellidae he mentions 

 Ilippodainia parenthesis Say; Coccinella 5-notatci Kirby,and Coccinella 

 9-notata Hbst. 



The only species bred by me from the grain aphis thus far, though 

 in considerable numbers, is Aphidiics nigriceps Ashmead. 



There were also bred by me a number of specimens of jSyrj>/n/s 

 americamisWied., the larva 1 of which prey voraciously upon the lice. 



The following original specimens, preserved by Fitch and bearing 

 his identical numbers and names, as found in his notes, are: 4987, var. 

 pall )<Vi comix; 4988, t riser lata; 4990, obsoleta; 4992, Mciricta; 4993, 

 nigricollis; 4994, tergata; 4995, thoracica; 4997, nigriventrls; 5000, 

 fulciventris, and 4991, without a name attached, which is probably 

 identical with his variety immaculata. None of the following num- 

 bers of A. mali) mentioned in his notes, were found: 1125, 1126, 

 4987, 5004, 5548, 5549, 11603 and 11604, $ , 11605 and 11606, ? , 

 nor 11844-11853. One specimen, a male, marked by Fitch with the 

 printed number 839, is preserved in the State Cabinet of Natural His- 

 tory of New York, at Albany, N. Y. 



Of Aphis prunifolide, Fitch, the following specimens, mentioned in 

 his notes, are still preserved: a, d, e,f, g; while b, c, A, and numbers 

 3772-3783 are lost. 



Of Aphis avenm Fitch, but three specimens were found; two speci- 

 mens bore No. 15237 and the other one 15238, while 15239 is lost. 



THE ENGLISH GRAIN LOUSE. 



(Macrosiphum granaria Buckton. — Fig. 2.) 



Siphonophora Koch, Pflanzenlause, p. 150, 1857. 



Macrosiphum Passeruii, Gli Afidi, p. 27, 1860. 



Nectarophora Oestlund, Aphididse of Minnesota, p. 78, 1887. 



In accordance with priority, the generic term Siphonophora, as 

 adopted by Koch, had alread3 T been preoccupied by Eschscholtz and 

 described by him in " Syst. d. Acaleph.' 1 in 1829, though, without 

 knowing this fact, it was again applied by Brandt, "Bull. Acad. St. 

 Petersburg," in 1836, for a genus belonging to the Myriapoda. Oest- 

 lund, recognizing the preoccupation of Siphonophora, substituted for 

 it (Aphidid* of Minnesota, p. 78, 1887) the name Nectarophora, over- 

 looking the fact that Nectarophora was antedated by Macrosiphum 

 Pass. (Gli Afidi, p. 27, 1860), a generic term, unfortunately, adopted 

 by Oestlund for a species with long and clavate nectaries, found on 

 Bulms strigosus, which he named Macrosiphum rubicola, a generic 

 term also adopted by Del Guercio (Afidafauna Italica, pp. 144 and 



