1902.] 29 



The tentative MS. genus Pseudochelaria, Wlsm., was founded on 

 the unpublished species pennsylvanica^N Ism. MS. Dietz (I. c.) figured 

 the neuratiou of walsinghami, Dietz, and sufficiently described the 

 genus in his description of the species to establish the generic name. 

 Although he remarks that the type of the genus is pennsylvanica, 

 Wlsm., this observation can only apply to Pseudochelaria, Wlsm. MS., 

 the type of Pseudochelaria, Dietz, being obviously walsinghami, 

 Dietz. 



Mr. A. Busck (i. e., 11.111.1901) informs us that walsinghami, 

 Dietz, must be referred to Gelechia, lib., it therefore follows that 

 Pseudochelaria, Dietz (nee Wlsm. MS.), must sink as a synonym of 

 that genus, while Pseudochelaria, Wlsm. MS. (nee Dietz), being invalid 

 through homonymy, will require a new name. 



(To be continued). 



ON THE SYSTEMATIC POSITION OF TIIAUMATONEURA 



INOPINATA, McLachlan ("ORDER ODONATAJ, WITH SOME REMARKS 



ON THE CLASSIFICATION OF THE SUBORDER ZYGOPTERA. 



BY PHILIP P. CALVERT, Ph.D., 

 Instructor in Zoology, University of Pennsylvania, Philadelphia, Pa., U.S.A. 



In this Magazine for June, 1897, pages 130-1, Mr. McLachlan 

 described a remarkable Odonate under the name Thaumatoneura 

 inopinata, gen. et sp. nov., referring it to the subfamily Calopteryginee 

 and to the legion Amphipteryx, Selys. The region of the earth whence 

 the unique type came was unknown, but this lack of information was 

 supplied by a second note from Mr. McLachlan, also published in this 

 Magazine, August, 1900, p. 189, to the effect that M. Eene Martin 

 possessed a specimen from Chiriqui, in Panama. 



This note attracted my attention more especially because I have 

 been studying the Odonata brought together for Messrs. Godman and 

 Salvin's " Biologia Centrali-Amencana," and it became necessary to 

 analyse the species. As M. Martin's specimen was much more com- 

 plete than the original type, I asked M. Martin for a photograph of it. 

 This he has lately sent me, together with a drawing of the appendages 

 which terminate the abdomen of the male.* Thanks to his kindness, 

 1 am able to more intelligently study the questions of classification 

 which the discovery of this insect involves. 



* Mr. McLachlan's type specimen has been figured in Biol. Centrali-Amcricana, Nev.roplera, 

 PI. 3, together with some details from M. Martin's example. 



