13 



nectioii with the oraiii apliis ho inentioii.s tho followiiii^- panisitR' or 

 predaceous insects. 



To.rave.s trltlcaj^)hlK Fitch; Praon, aoenapMs Fitch; AlUdrUi trltlcl 

 Fitch, and AUotria avenai Fitch. Of the Coccinellid.w he mentions 

 JFi jtpodamia imrenthesh Say; Coccinella 5-notata Kirby, and CoceinelJa 

 0-notiita Hbst. 



The onl}^ species bred by me from the grain aphis thus far, though 

 in considerable numbers, is Aphldlus nigriceps Ashmead. 



There were also ])red by me a number of specimens of Syrjduis 

 americcmusyV ied., the larvte of which prey voraciously upon the lice. 



The following' original specimens, preserved by Fitch and bearing 

 his identical num])ers and names, as found in his notes, are: 4987, var. 

 jxdUdlcornit^; -4988, trlmrkda; 4990, ohsoleta; 4992, Inaincta; 4993, 

 nUjricoUis; 4994, tergata; 4995, tlioraciea; 4997, nigrlventrls; 6000, 

 fidviventr'is^ and 4991, without a name attached, which is probably" 

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

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

 4987, 5004, 6548, 5549, 11603 and 11604, $ , 11605 and 11606, 9 , 

 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. 



Oi Aj)lth pnmifiMx Fitch, the following specimens, mentioned in 

 his notes, are still preserved: a, <?, t\f, g; while ?>, c, //, and numbers 

 3772-3783 arc lost. 



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

 mens bore No. 16237 and the other one 16238, while 15239 is lost. 



TIIK ENiiLISH GRAIN LOUSE. 



{Macrosij)lin)ii i/ranari<t Bac-ktoii. — Fi-x. 2.) 



Siphonophora Kot;k, rflaiizenliiiiSL', p. 150, 1857. 



Mncromphum Paf^SLM-ini, (ili Atidi, p. 27, 1860. 



Nccturiiphor<t Ocstluiid, Aj)hi(li(la' of Minnesota, j>. 7S, 1SS7. 



In accordance with "priority, the generic term Siphonophora, as 

 adopted l)y Koch, had already been preoccupied by Eschscholtz and 

 described ])y him in "S3^st. d. Acaleph.'' 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 (Aphididffi of Minnesota, p. 78, 1887) the name Nectarophora, over- 

 looking the fact that Nectarophora was antedated by Macrosiphum 

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

 l)y Oestlund for a species with long and clavate nectaries, found on 

 Puhus strigosus, which he named Macrosiphum ruhicola., a generic 

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



