82 GENERA OF HYMENOFTERA, 



9. — Anterior win^s with or without a regular hasal vein; tiagellum without a 



ring-joint Belytinse. 



Anterior wings witli an abruptly broken basal vein, from one end of which 

 arises a cubital vein distinguished by its irregular course ; botii to- 

 gether these form an irregular discoidal cell ; flagelluni with one 

 ring-joint Helorinse. 



Table of Genera. 



Su])faiiii]y I)kyini>m:. 



Vertex deeply impressed 2. 



Vertex convex, not impressed 3. 



2. — With wings Dryiims Latr. 



Without wings GoiiatupuM Ljungh. 



'■i. — Occiput deeply concave; vertex and neck separated by a sharp angle. 



*Ijab<»o ITal. 



Occiput feebly concave; vertex and neck not so distinctly sei)aratcd 4. 



4. —Anterior tarsi J with scissor-like or pincer-like claws; % prothorax visible 



above, but not longer than niesothorax 5. 



Anterior tarsi 9 '^ot scissor- or pincer-like ; '^ prothorax al)ove not visible, 



or longer than mesothorax 6. 



5.— Fourth joint of anterior tarsi 9 much longer than third: ludthorax % 9 



as long, as, or nearly as long as mesothorax ClioIogjiiU!"* Hal. 



Fourth tarsal joint 9 ^s long as, or scarcely longer than third: jirotiiorax 



% 9 much shorter than mesothorax Aiitooii .lur. 



<). — Prothorax much longer than mesothorax, the latter without a trace of a 



furrow ; wings short, s])oon-shai)ed *Mysl-roi»lioru!>» Forst. 



Prothorax above not, or very slightly visible ; mesothorax very strongly 

 developed, with distinct furrows ; wings % 9 full>' il('vilo])cd. 



'^.ll»lielui>U!« Dalm. 



Subfamily Embolemin.e. 

 Eyes arched, ocelli large ; scape shorter than the lirsi funicle joint. 



^i^iiihoioiiiiiM Westw. 



Eyes flat, ocelli very small; scape much longer than fust luniilc juint : wings 



rudimentary *lV«liiioiiiiiia Fiirst. 



Stibfamily BETHVLixiE. 



Head without ocelli Scler«<*liroa Forst 



Head with ocelli 2. 



2. —Anterior wings with a complete marginal cell *Sicrola Cam. 



Anterior wings with a nearly complete marginal cell 3. 



Anterior wings without a marginal cell 4. 



3. —Basal vein with a branch directed backwards. 



Antenna' 12-joiiited % 9 *l»«'ri.s<'nni!>» Forst. 



.^ntennaj 1.3-jointed G«>iii<>/.ii»i Ftirst. 



Basal vein without a branch. 



Parapsidal lurrows jjlain ; abdominal segments of almost equal length. 



Kp.yriM Westw. 

 Parapsidal fui rows wanting ; abdominal .segments of uiu(|ual iciiLrtli. 



^iMobrac'hiuiii Fiu>.t. 



