CLASSIFICATION OF INSECTS. 215 



apex, and having one internal tooth ; maxillae, 

 with the blade acute, the galea obtuse and exarti- 

 culate, the feelers long and six-jointed; labium 

 short, with the ligula distinctly trilobed ; wings 

 ample ; podeon equally developed with the other 

 segments ; oviduct with teeth like a saw. Abundant 

 in the spring and summer in woods, &c. on 

 leaves and flowers. Nematus, Cladius, Croesus, 

 Emphytus, Dolerus, Dosytheus, Allantus, Fenusa, 

 Selandria, Athalia. 



732. Hylotomites (Hylotomites). Larva cylin- 

 drical, rather attenuated towards the extremities, 

 with six articulated and fourteen membranaceous 

 legs. Inhabits and feeds on the leaves of vegetables. 

 Pupa changes mostly on the surface of the ground. 

 Imago with the antennae three-jointed ; the basal 

 and second joints very short, the third very long, 

 ciliated, and often double, or having two shafts in 

 the manner of a fork ; mandibles corneous, acute, 

 with a small internal tooth ; maxillae with the 

 blade acute, the galea robust and obtuse, the 

 feeler long and six-jointed ; labium short, with 

 the ligula small, but distinctly trilobed ; feelers 

 four-jointed ; ocelli three ; body, with the segments 

 and oviduct, as in the Allantites. Settles and 

 feeds on umbellate flowers. Schizocerus, Hylotoma. 



733. Club-horned saw-flies (Tenthredinites). 

 Larva mostly chagreened, cylindrical, with six 

 articulate and twelve prehensile legs. Feeds on 

 the leaves of trees. Pupa changes in a case 



