EMBIOPTERA OF THE NEW WO'RLD ROSS 461 



second subgenus, but it is so incompletely described, and without a 

 definite type locality, that it cannot be distinguished without a re- 

 description of the type. 



Subgenus Oligembia, sensu stricto 



Males. — Tips of mandibles usually curved ventrad ; teeth small, blunt, 

 inconspicuous. Terminalia with tenth tergite apodeme often not 

 strongly produced forward beneath ninth tergite, usually broadly 

 rounded; left tergal process (10 LP) elongate, apex stout, complex, 

 inner margin (except in melanura) not developed as a "talon"; right 

 tergal process (10 RPi) with outer margin nearly straight, evenly 

 slanted from base to apex; left paraproct (LPPT) narrow, greatly 

 produced caudad, tip usually attaining that of 10 RPi in length ; left 

 cercus-basipodite (LCB) with only a single inner lobe, variable in 

 development, generally with a pair of terminal "claws," occasionally 

 simple ; basal segment of left cercus (LCi) seldom clavate, that of right 

 cercus (RCi) never lobed. 



Type. — Oligotoma kuhhardi Hagen. 



Distribution. — That of the genus OUgenibia. 



This subgenus can be separated from the other subgenera principally 

 on the basis of the great length of the left paraproct, the structure of 

 the left tergal process, and the structure of the left cercus-basipodite. 

 A great variety of structure in terminalia is exhibited by the 10 in- 

 cluded species. One of these, armata, is so strikingly extreme in char- 

 acters that it warrants a position in a separate group from the others. 

 The subgenus is accordingly divided into 2 species groups in the fol- 

 lowing key : 



KEY TO GROUPS AND SPECIES OF OLIGEMBIA (s. str.) (MALES) 



1. Right tergal process (10 RPi) with a prominent, domelike, densely echinulate 



nodule at inner base (Group II) armata 



Right tergal process not as above (Group I) 2 



2. Left tergal process (10 LP) with a narrow, longitudinal cleft, extending to 



within basal half of process ; inner portion sclerotic, outer portion submem- 



branous ; Panama rossi 



Left tergal process not as above, outer portion nearly as sclerotic as inner 3 



3. Color pale, usually tan ; head light ferrugineous 4 



Color dark brown or blackish; head nearly black 7 



4. Left cercus-basipodite (LCB) with inner lobe free, projecting mesad 5 



Left cercus basipodite with inner lobe appressed to inner side of left cercus 



or obsolete 6 



5. Left tergal pi'ocess with a subapical notch on left side (fig. 101) ; 



"claws" of left cercus-basipodite directed inward and upward; Virgin 



Islands brevicauda 



Left tergal process with left side simple, unnotched (fig. 99) ; "claws" of LCB 

 directed upward and curved back toward left cercus ; Florida hubbardi 



