346 



Franz Friedr. Kohl. 



extending nearly as far as the middle of the eyes), not notched exteriorly, but provided 

 within with a tooth at about two-thirds of their length. Prothorax narrower than the 

 mesothorax, situated in a lower level and sloping towards a transverse groove, the 

 posterior margin subangularly bent backwards; mesothorax very convex; metathorax 

 subelongate, about as broad as long, sloping towards the truncation; the metanotum 

 bordered laterally by a sharp ridge which ends in a short tooth. Intermediate tibiae 

 with a Single spine at the apex anterior wings with one marginal cell, truncated and 

 appendiculated at its apex, and three submarginal cells, the first a little longer than the 

 two foUowing united, the second, which receives both recurrent nervures before the 

 middle of the base, narrowed towards the marginal cell, the third lunate. Abdomen 

 short, broadly ovate, very convex especially at the base, considerably smaller than the 

 thorax, petiolate, the petiole however very short. 



»This genus, which in many respects agrees with Larrada, may at once be distin- 

 guished by the want of the notch on the outside of the mandibles, by the scape of the 

 metathorax and that of the abdomen. cT.« 



Die Gattungsbeschreibung entwarf Ritsema nach einer einzigen sumatranischen 

 Art, von der ihm nur das Männchen vorlag. Seither ist die Gattung in der Wissenschaft 

 von keiner Seite näher charakterisirt worden. 



Die Gattungstype ist im Besitze des Leydener Museums. 



3i. Genus Larra Fabricius. 



<,Sphex Rossi, Faun. Etrusca, II 1790 



< Ltzrra Fabricius, Ent. Syst., II, pag. 220 1793 



<. Larra Latreille, Prec, Gar. Gen. Ins., pag. 116, Gen. 17 1796 



<.Po?npilus Fabricius, Syst. Piez., pag. 219 1804 



<L2ris Illiger, P. Rossi, Faun. Etrusca, Ed. IH^, II, pag. loi 1807 



<:.Tachytes Lepelletier, Hist. Nat. Ins. Hym., III, pag. 23g 1845 



<. Larrada Smith, Catal. Hymen. Ins. Brit. Mus., IV, pag. 274 1856 



larnr Kohl, Verh. zool. -bot. Ges. Wien, XXXIV, pag. 233 1884 



Caput thorace latius. Oculi integri verticem versus convergentes subtus mandi- 

 bularum basin attingunt. Frons secundum orbitas utrinque toro longitudinali 

 et insuper toro transverso mediali instructa. Stemma anterius forma solita, 

 stemmata posteriora oblonga, complanata invicem admodum approximata. Mandi- 

 bulae in margine inferiore excisae, apice simplice, margine interiore inermi. 

 Palpi maxillares 6-, labiales 4-articulati. Clypeus sat brevis, transversus, planus. An- 

 tennae (5 9 12-, cT cf i3-articulatae) ex dimidia parte clypeo insertae. Scapus 

 magnus. Pedicellus longior quam crassior, feminarum plerumque levis, 

 absque tomento. Occiput tenue. 



C o 11 a r e n o n- v e 1 p a r u m s u b d o r s u 1 u m d e p r e s s u m ; in lateribus haud humi- 

 lius quam in media parte, antice ad coUum sat declive aut perpendiculariter abruptum. 

 Tubercula humeralia alarum tegulas haud attingunt. Episterna mesothoracis area epicne- 

 miali omnino carent. Sutura episternalis et epimeralis distincta. Scutellum trans- 

 versum. Segmentum medianum haud raro longius quam dorsulum, area dorsali (»cordi- 

 formi«) caret, postice fere aut omnino perpendiculariter abscissum. 



Abdomen caeterum feminarum fere laeve, area pygidiali laevi apicem 

 versus angustata distincta, tomento et setulis rigidis carente, Abdomen 

 masculorum tomcntorum, rarius sublaevigatum; segm. supraanale masculorum con- 



