CATALOGUE OF 



F. Rostrum reposing iu a groove. 



G. Rostrum free, without a groove. 



H. Head triangular, received up to the eyes by 

 the prothorax. Four hinder legs formed 

 for rowing or for gliding on the water. 

 Ungues of the tarsi hidden iu a notch of 

 the last joint before its tip. - 



6. DUCTIROSTBA. 

 7. NtlDIROSTRA. 



8. Remifeda. 



A. Head quadrate. 



B. Head triangular. 



SUPERICORNIA, C. H. 369. 

 - 1 



Tetragonocepiiala. 



2. TuiGONOCEPlIALA. 



1. TETRAGONOCEPHALA. 



Tetragonocephala, Serv. Hist. Hem. 



No spine near the base of the antenna;. 



Antenniferous tubercles very prominent, 

 separated by a notch, without a groove or 

 a keel between them. - - - - 



Antenniferous tubercles less prominent, with 

 no notch, but with a keel lietween them. 



Head with a spine at the base of the 

 antennae, or with the first joint of the 

 antenna; spinose. - - - - 



184. 



1. Sectifrontia. 



2. Plenifrontia. 



3. Spinifrontia. 



1. SECTIFROiNTIA. 

 Sectifrontia, Serv. Hist. Hem. 184. 



A. Femora smooth ; hind femora not thicker 



than the others. . - - - - 



B. Femora with spines beneath; hind femora 



thicker than the others, especially in the 

 male. ------ 



1. SpARTOCORIDiE. 



MICTID.E. 



Earn. 1. SPARTOCORID^, C. H. 370. 

 Fam. Coreida. Subfam. Coreida. Div. Spartocorida, Stal. 



A. Antenna; cylindrical. 



a. Prothorax crescent-shaped. 



* Body elongate. Abdomen not dilated. 

 ** Body ovate. Abdomen dilated. 



b. Prothorax not crescent-shaped. 



* Fourth joint of the antciintE much longer 



than the third. Disk of the prothorax 

 with tubercles. 



** Fourth joint of the antenna; a little longer 

 or shorter than the third. 

 f Hind angles of the protluirax rounded. 



If Hind angles of the prothorax acute. 



1. Euagona. 

 5. Menenoxus. 



2. Sephina. 



3. Spartocera. 

 4. Eubule. 



