1903.] 189 



No intercostal n. Radial a. simple. Last joint of t? ant. divided into 



two subparallel brandies (furcate) Schizoceros. 



18 (16) Ant. never set 'form (in all British species, I believe, multiarticulatc with 



short broad joints, and in the 3 6 pectinate throughout). Radial a. 

 undivided, sometimes with small appendic, cell at apex (the latter not 

 Ijf ing quite upon the margin of the wing) Lopht/ru.t. 



Radial a. generally* divided. If not the antennae are sctiform, 9 jointed, 



with most of the joints elongate. (Pectinate antennse occur only in 

 Cladius (J (J, and they are so only near the base). 



This brings us to Konow's last Subfamily, the Tenthredinini ...19. 



19 (18) Radial a. undivided 20. 



Radial a. crossed by a w 35. 



20 (19) Humeral a. contracted 21. 



Humeral ff. petiolate 24. 



21 (20) The two medial ?j?i. strike upon different cubital cells 22. 



The two medial nn. strike upon the same cubital cell Leptocercus. 



22 (21) Three or more (sub-basal) joints of ant. branched or "pectinate" in $ ; 



in the 9 these joints are broad, flattened, and obliquely truncated, 

 witli spine-like projecting apices Cladius. 



Antenna? of S unbranched, their joints in the ? ? not spinosely produced 



at apex 23. 



23 (32) Third joint of ant. curved. f Its base tuberculate in the J and sharply 



angled in the $ (latei-al view) Trichiocampus. 



Third joint of ant. straight ; it is more or leas compressed and dilated, 



but otherwise simple in both sexes Priophorus. 



24 (20) Intercostal ». lies before the point where the discoidal n. strikes the 



subcosta 25. 



Intercostal n. lies after the point above mentioned Dineura. 



25 (24) Clypeus excised at apex (Fig. 7) 26. 



Clypeus subtruncate 34. 



26 (2o) Second cubital ti. absent, making the apparent 2nd cubital cell (really the 



2nd + tlie 3rd!) look extremely long Cryptocampus. 



Second cubital n. always present {the first however may be obliterated !), 



the second cell never very elongate 27. 



27 (26) Claws bifid (Fig. 8) 28. 



Claws with subapical tooth 33. 



28 (27) Dorsal apex of ^ abd. with a narrow blunt " awl-like " production : ? 



with slender antennse, rather filiform than tapering, often with ss. 

 (viewed laterally) acuminate at extreme apex, often with stigma pallid 

 at base and a darker apex (mostly small species inhabiting galls)... 



Pontania. 



Dorsal apex of S abd. produced, if at all, more broadly and triangularly 



(not awl-like), ^ antennse setiform (tapering) : stigma never with pale 



* The exceptions are— 1, most Nematides, and 2, abnormal specimens in all genera. 

 t The curve in T. viminalix. Fall., is so slight that it might be overlooked, but that speciss 

 may be known from any Prioplioras by its orange-red abdomen. 



