EMiBIOPTERA OF THE NEW WORLD — ROSS 431 



bladders; ventral setae rather short and sparse. Second segment of 

 hind tarsi with very large echinulations on bladder. Cerci short, 

 small; basal segment with a pigmented basal ring and with outer 

 margin membranous. 



Holotype. — Male, on slide, deposited in the La Plata Museum, 

 Argentina. 



Type data. — The holotype bears four hand-lettered labels in the fol- 

 lowing top-to-bottom sequence: (1) "Unquillo (Cordoba), Dr. Max 

 Biraben" (on thin green paper) ; (2) "Typus" (on red paper) ; (3) 

 "Embia Birabeni Nav." (on large, green-bordered label) ; (4) "Embia 

 Birabeni Nav. P. Navas S. J. det." (on thin green paper— in Navas's 

 hand?). 



Neallotype (by present designation). — Topotype female, on slide, 

 deposited in the La Plata Museum, Argentina, described above. 



Other records. — One topotype male, on slide (LPM) (retained in 

 writer's collection) ; one male, on slide, Cosquin, Sierra de Cordoba, 

 Argentina, March 1-9, 1920, Cornell University Expedition (CU). 



RemarJcs. — P. hirabeni is most closely related to a specimen at hand 

 identified below as tenuis. The two species are separable by the dif- 

 ferences in the form of the left tergal process. 



PARARHAGADOCHIR TENUIS (Enderlein) 



FiGTJBES 42-45 



Enilia tenuis Enderlein, 1909, p. 180.— Krauss, 1911, p. 69.— Navas, 191S, p. 103. 

 Rhagadochir tenuis (Enderlein) Endeelkin, 1912, p. 60, fig.s. 34, 35, pi. 3K. 

 Pararhagadochir tenuis (Enderlein) T>a\jb, 1940a, p. 188, fig. 80. 

 Rhagadochir tenuis var. flaviteps Enderlein, 1912, p. 61. — Navas, 1918, p. 104 

 {EmHa). 



Holotype. — Male, Stettiner Zoologischen Museum. 



Type data. — Prov. Sara, Bolivia (J. Steinbach). 



Plesiotype (by present designation) . — Male, on slide, from Rurrena- 

 baque, Bolivia, November 1921 (W. M. Mann), deposited in United 

 States National Museum, described as follows : 



Head medium brown, antennae and palpi dark chocolate brown, 

 submentum reddish brown; mandibles straw yelloWj apices reddish 

 brown ; wings, remainder of body, and appendages (except termina- 

 lia) lighter brown. Length 9 mm.; forewing length 5.7 mm., breadth 

 1.4 mm. Hind basitarsi with two sole-bladders ; the second very small, 

 pointed. Form of head and structure of terminalia as illustrated 

 (figs. 42-45). 



Other records.— Mi\\Q paratypes with type data (Berlin and Stet- 

 tin Mus.) ; 1 male paratype, Yungas, Brazil (Berlin Zool. Mus.). 



Remarks.— The identity of the above plesiotype is tentative and 

 based only upon a comparison of its terminalia with Enderlein's fig- 

 ure of those of tenuis. The details of the left tergal process are some- 

 what discrepant. 



