EMBIOPTERA OF THE ISTIW WO1RI.D — ROSS 459 



in the same paper, show that he was careful in his delineation of the 

 cross veins characteristic of species of Pararhagadochir and thus prob- 

 ably would have indicated such had they been present in his type. 



2. His figures and descriptions of LCi ("cerco sinistro articulo primo 

 apice in lobum internum grandem longumque subcylindricum dil- 

 atato") and of 10 RPi ("dextro in dentem longum triangularem styli- 

 formem, apice bidentatum producto") are likewise descriptive of pro- 

 ducta. The fact that no echinulations were mentioned as being on the 

 lobe of LCi is also significant. 



3. The measurements of the described specimen (length 5 mm., fore- 

 wing length 4.8 mm., hindwing 4.0 mm.) are much less than those of 

 the specimens of Pararhagadochir that have been erroneously assigned 

 to the species. 



Any other determinations of this species by Navas, even those of 

 specimens at hand at the time of the description, are not to be trusted, 

 as his specimens were uncleared and thus did not fully exhibit the char- 

 acters. There is a great need for a careful redescription of the holo- 

 type in order to confirm the present generic assignment and to deter- 

 mine its relationship to the other species of Idioemljia, 



Genus OLIGEMBIA Davis 



OUrjemUa Davis, 1939b, p. 217.— Ross, 1940b, p. 636.— Davis, 1942, p. 117. 



At the time of the description of this genus only tv/o component 

 species, hvhhardi (Hagen) and oligotomoides (Enderlein), were pre- 

 viously known, both of which had been erroneously placed generically. 

 Davis's contributions (1939b, 1942) and that of the writer (1940b) have 

 brought to light four additional new species. In the material now at 

 hand IT more have been discovered, bringing the total nmnber of 

 species to 23 and thus making Oligemhia the largest American genus 

 of the order, with potentialities of a still much greater increase in size. 



A study of this lot of species, of which only three have not been 

 seen by the writer {oUgotoinoides, intricata^ and rossi) , makes possible 

 a more substantial evaluation of generic characters. The genus is 

 accordingly redescribed as follows : 



Males.— A\B.iQ, size generally small, usually pale in color. Head 

 with 63' es generally large and composed of large facets; mandibles 

 small, with three apical dentations on left mandible and two on the 

 right, apices often curved ventrad; mentum obsolete; submentum 

 sclerotic, prominent, shieldlike, variable in shape. Wings usually 

 pjile ; E4,5 forked ; this, M, and Cuia represented only by rows of macro- 

 trichiae; hyaline stripes broad. Hind basitarsus with only one sole- 

 bladder ; this, the terminal one, is very small, subobsolete. Terminalia 



