EMBTOPTE'RA OF THE NEW WO'RLD — ROSS 427 



Type data. — The holotype bears four labels in the following top-to- 

 bottom sequence: (1) "Rep. Argentina, Pr. Santiago d. Estero 190-, 

 C. Bruch" (printed on bordered white paper) ; (2) "Typus" (printed 

 on green card with border) ; (3) "Ehagodochis trachelius Nav." 

 (hand-lettered on large label with green border) ; (4) "Rhagadochir 

 trachelius Nav. Navas S. J. det." (on green paper, in Navas's hand?). 



The numerous records for this species given by Navas have not been 

 listed as his specimens were not prepared (see Davis, 1940a) and 

 thus his determinations require verification to be of any value. 



All the specimens studied by Davis {I.e.) appear to be referable 

 to the new species described beloY^^ 



The only additional specimen at hand, besides the holotype, which 

 appears to be trachelia, is a male from Campo Santo, Salto, Argentina, 

 March 13, 1939 (Biraben-Scott) (LPM). This specimen has rela- 

 tively short wings, these being about half as long as the body instead of 

 nearly equal length as in the holotype. 



Reference to more specimens of this species w^ill probably reveal 

 the existence of a number of subspecies. Two Argentina specimens 

 before the writer have structural characters similar to trachelia but 

 differ in being darker brow^n with the prothorax brown instead of 

 pale yellow. The head is darker, with the mandibles brown instead 

 of amber yellow, and the submentum is very dark brown with a 

 different form (fig. 35). One of these specimens is from Chilecito, 

 La Rioja, February 20, 1939 (Biraben-Scott) (LPM) (retained by 

 the writer) ; the other is from B. de Doria Sanogasta, La Rioja, 

 February 21, 1939 (Biraben-Scott) (LPM). The small additional 

 hind basitarsal bladder of trachelia cannot be located on these speci- 

 mens. Further studies may indicate that such specimens represent 

 a distinct subspecies. 



PARARHAGADOCHIR SCHADEI, new species 



Figures 50, 51 



Holotype male. — Color (on slide): Head medium brown; anten- 

 nae darker; mandibles and submentum pale amber yellow, tips and 

 inner edges of mandibles reddish brown, Prothorax pale yellow; 

 pterothorax, legs, and wings medium brown. Abdomen pale brown, 

 terminalia medium brown. Length 8.5 mm. (on slide), forewing 

 length 5.5 mm., breadth 1.3 mm. 



Head (fig. 50) with form as illustrated; eyes large, inflated; sides 

 of head strongly convergent behind, short. 



Wings as throughout the genus; no cross veins between R4+5 

 and M. 



Hind basitarsi without an inflated second sole-bladder but with 

 a small, pale, membranous area in the expected position which pos- 

 sibly may become inflated at times. 



