CATALOGUE OF 



F. Rostrum reposing in 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 hiddeu in a notch of 

 the last joint before its tip. - 



6. DUCTIROSTKA. 

 7. NuDIROSTRA. 



8. Remipeda. 



2. SUPERICORNIA, C. H. 369. 



A. Head quadrate. 



B. Head triangular. 



1. Tetragonocephala. 

 2. Trigonocephaly. 



1. TETRAGONOCEPHALA. 



Tetragonocephala, Serv. Hist. Hem. 184. 



A. No spine near the base of the antennae. 



a. Antenniferous tubercles very prominent, 



separated by a notch, without a groove or 



a keel between them. - 1 



b. Antenniferous tubercles less prominent, with 



no notch, but with a keel between them. 2. 



B. Head with a spine at the base of the 



antennae, or with the first joint of the 

 antenna? spinose. .... 



1. Sectifrontia. 



2. Plenifrontia. 



3. Spinifrontia. 



1. SECTIFRONTIA. 

 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. 



2. MlCTlD-E. 



Fam. 1. SPARTOCORIDiE, 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 antennae much longer 



than the third. Disk of the prothorax 



with tubercles. - 

 ** Fourth joint of the antennae a little longer 



or shorter than the third, 

 f Hind angles of the prothorax rounded. 

 ff Hind angles of the prothorax acute. 



1. Euagona. 

 5. Mexenotus. 



2. Sephina. 



Spartocera. 



4. EUBULE. 



