NORTH AMERICAN AUCHENORRHYNCHOUS HOMOPTERA. 339 



21. Strongylocephalus agrestis (Fallen). New York; Iowa; 

 Michigan. 



A total of thirty-eight genera and twenty-one species. 



A few words on the nomenclature of some homopterous genera 

 may not be out of place here. 



1. It does not seem to be generally known that Hardy's 

 genus was Dlkraneura (not Dicraneura as usually spelt). 



2. In the ' Transactions ' of the Entomological Society of 

 London (1894, pp. 411-3), Mr. W. F. Kirby discusses the syn- 

 onymy of two Tetigoniid genera, viz. Cephalelm and Dortjdium, 

 and concludes that the type of the latter is lanceolatum, Burm. 



Kirby has fallen into error here through assigning a wrong 

 date for the publication of the rhynchotal portion of Burmeister's 

 ' Handbuch der Entomologie.' This was not 1839, as Kirby 

 states, but 1835,* as far as pp. 1-396 are concerned ; pp. 1005-17 

 were indeed published in 1839. Cephalelus was founded in 1832 

 by Percheron in Guerin's ' Magazin Zool.," type C. infamatus. 

 In 1835 Burmeister (' Handbuch,' ii. p. 106) erected Donjdiiim, 

 type jiaradoxum. In 1838 the same author (' Genera Insectorum ') 

 stated that these two genera were founded on the same insect, 

 and transferred the name Dorydium to a new species, lanceo- 

 latum, and this was also noted in 1839 in the table of corrections, 

 &c., appended to vol. ii. of the ' Handbuch ' (p. 1006). 



The following synonymy will therefore be necessary : — 

 (1.) Cephalelus, Bercheron, 1832, type injumatus, Perch. ; 

 Siguoret, 1879, Ann. Soc. Ent. France (5), 9, p. 259. 

 = Donjdium, Burm., 1835, type paradoxiim, Burm. 

 (2.) Paradorydium, h. «., 1901, type lanceolatum (Burm.). 



= Dorydium, Burm., 1838 and 1839, type lanceolatum, 

 Burm.; Signoret, I.e. p. 261 ; Kirby, 1894, I.e.; 

 Puton, 1899, Cat. Hemipt. palearct., ed. 4, p. 93. 

 (3.) Gen. nov. ? (type westwoodi, F. B. White). 



= Donjdium, F. B.White; Signoret, 1880, I.e. (5), 

 10, p. 43. 



3. The first pahEarctic genus of the Agallini (Bythoscopini) 

 founded was Agallia, Curtis (Jan. 1833), type [consobrina =J 

 puncticeps, Germ. In the same year iJuly or after) Germar 

 erected Bythoscopus, no type being fixed. In 1835 Lewis pro- 

 posed three genera: (1) Batracomorphus, type [irroratus==] micro- 

 cephala, Schaff. ; (2) Macropsis, with two species rirescens (Fabr.) 

 a.nd Jlavicollis (Linn.) ; and (3) Idiocerus, the application of which 

 is not disputed. He also fixed lanio (Linn.) as the type of 

 Bythoscopus, Germ. In 1838 Burmeister (' Gen. Insect.') divided 

 Bijthoscopus into four subgenera: {1) Bythoscopus, not that of 

 Germar, restricted by Lewis; (2) Idiocerus; (3) Oncojjsis, Bmm. 



* Sec, amongst other contemporary references, Burmeister, 1836, Arch. 

 Naturg. ii. pt. '1. 



