360 CLASS VIII. 



Masaris- FABR. 



Masaris LATR. Antennae (of males) longer than head. Abdomen 

 elongate. 



Celonites LATR. Antennae in both sexes very short, terminated 

 by a globose club. Abdomen scarcely longer than thorax. 



Sp. Celonites apiformis, PANZER, Deutschl. Ins. Heft 76, Tab. 19 ; DUMEUIL, 

 Cons. gen. s. I. Ins. PL 31, fig. 9 ; Cuv. R. ani. id. ill., Ins. PI. 123, fig. 9; 

 in southern Europe. 



Phalanx II. Antennas with all the joints distinct, 13 in males, 

 12 in females, with second joint geniculate, thicker from third 

 joint towards apex, acuminate at apex. 



a) Solitary 1 . Mandibiles elongated-triangular, connivent, like 

 a rostellum. Ligula narrow, elongate. Clypeus sub-cordiform or 

 oval, with anterior margin produced and truncated. 



t Cubital cells only two. 

 Ceramius LATR., KLUG. Labial palps longer than maxillary. 



Sp. Ceramius Fonscolombii LATR., GUERIN, Iconogr. Ins. PL 72, fig. 2. 

 ft Cubital cells three. 



Synagris LATR., FABR. Ligula produced into four very long 

 sub-plumose setse. Maxillary palps short, with four joints. Man- 

 dibles of males very large, porrect. 



Sp. Synagris calida, Vespa calida L., GUERIN, Iconogr. Ins. PL 72, fig. 3 ; 

 Synagr. cornuta, Vespa cornuta L., Encycl. meth., Ins. PL 382, fig. 10. 

 Comp. on this genus LEPELETIER in Encycl. meth. Ins. Tom. x. pp. 509, 510. 



Eumenes LATR., FABR. Ligula tripartite, with -middle part 

 deeply incised, bifid. Four glandular points at the apices of ligula. 

 Maxillary palps with six joints. 



a) With abdomen oval or conical, thicker at the l>ase. 



Sub-genera : Pterochilus KLUG (with labial palps plumose), Ody- 

 nerus LATR. (Rhynchiwm SPINOLA). 



Sp. Odynerus auctus, Vespa aucta FABR., PANZER, Deutschl. Ins., Heft 81, 

 Tab. 17 ; Odyn. spinipis, (fern. Od. murarius), PANZER, Deutschl. Ins. 

 Heft 17, Tab. 18. (Here belong, according to AuDOUiN, the observations 

 of REAUMUR, Ins. vi. pp. 251 268. PL xxvi. figs, i 10.) 



1 H. F. DE SAUSSURE, Monographic des Gu&pes solitaires, av. 21 pi. color. Paris et 

 Geneve, 1852, 8vp. 



