1904.] NATURAL SCIEXCES OF PHILADELPHIA. 95 



Genus PSEUDOPHASMA Kirby { P hasm a Auct.). « 

 1S96. Pseudophasma Kirby, Trans. Linn. Soc. London, 2cl ser., VI, p. 473. 



Type. — Gryllus necydaloides Linnaeus (=phthisicus Linnseus). 



After examining the literature on the subject, I fully agree with 

 Kirby as to the necessity of a new name for the Phasma of most authors. 

 Pseudophasma phaeton n. sp. 



T}T)e. — S ; San Carlos, Costa Rica. (Schild and Burgdorf.) [Cat. 

 No. 7,348, U. S.N. M.] 



Closely related to P. urazi Bolivar^* from the Rio Atalapo, but differ- 

 ing in the hyaline posterior field of the wings, the longer mesonotum, 

 and the different proportions of the limbs. 



Bolivar's P. perezi*^ from Coca, Ecuador, also appears to be an allied 

 species. 



Size rather large; form very slender and elongate. Head consider- 

 al^ly longer than the pronotum, very slightly constricted posteriorly; 

 eyes ovate; antenna3 with each joint somewhat thickened apically, 

 basal joint oblong, slightly depressed. Pronotum not quite half the 

 length of the mesonotum, almost twice as long as broad, subequal, 

 anterior and posterior margins subtruncate; anterior angles with a 

 slight emargination caused by a distinct spiraculous aperture; cruci- 

 form depression slightly marked. Mesonotum rather elongate, sub- 

 equal in width ; lateral margins each with a distinct longitudinal carina ; 

 median portion with a constant slight longitudinal sulcus ; surface of the 

 anterior three-fifths sprinkled with rounded tubercles, surface of the 

 ])osterior two-fifths smooth; mesosternum obscurely tuberculate with 

 a distinct, though irregular, longitudinal carina. Metathorax equal to 

 the mesothorax in length; metasternum strongly longitudinal, and 

 l)caring a distinct, but very narrow, median sulcus. Tegmina slightly 

 over three-fourths the length of the mesonotum, subrectangular, the 

 apical margin obliquely truncate; costal margin arcuate; anal margin 



^" The name Pseudophasma was proposed almost simultaneously by both 

 Kirby and Bolivar, the former to replace Phasma of authors, the latter to desig- 

 nate a new genus near to the one Kirby renamed. Considerable trouble was 

 experienced in ascertaining the exact dates of the respective papers. Kirby's 

 article (supra, pp. 447-475) was read December 5, 1895, and in the contents of 

 the volume the date July, 1896, is given. Bolivar's paper (Adas Soc. Espan. 

 Hist. Nat., XXV, pp. 11-18) was presented January 8, 1896, and the date of 

 publication of the part is given on the cover sheet as September 30, 1896. From 

 the Zoologischer Anzeiger (Bibliographia Zoologica, I, pp. 552 and 650) we learn 

 that Kirby's paper was received first, and this no doubt has priority of a month 

 at least. Accordingly Bolivar's Pseudophasma requires another name, and I 

 propose Ignacia, as a "slight tribute to the worth of a master mind. 



" Actas Soc. Espan. Hist. Nat., XXV, p. 13. 



^^ An. Soc. Espan. Hist. Nat., X, p. 479. 



