BEETLES. 155 



* D. {Hccmonia) equiseti, Fabr. Yellow, with a black head, 

 antennae, and sternum. The wing-cases have a row of 

 punctures. It is found on water-plants, and spends the 

 larval state in the root. It is very rare. 



Genus Zeugophoea, Kunze. 

 Body cylindrical. Pronotum long and narrow. Head 

 broader than long, with prominent eyes. Legs short and 

 thick. They live on trees, and the larvae mine the leaves. 



* Z. flavicollis, Marsh (Plate XIX., Pig. 10). Black, with an 

 orange pronotum, prosternum, and legs. It lives on poplars, and 

 the larvae mine the leaves, which become black. It is very rare. 



Genus Lema, Fabr. 

 Wing-cases expanded in front and somewhat constricted. 

 Pronotum much narrower than the wing-cases. Claws close 

 together, and either coalescing or separated at the base. They 

 live on various plants, and are able to produce a kind of 

 chirping by rubbing the wing-cases. 



* L, cyanella, Linn. (Plate XIX., Fig. 11). Blue or bluish- 

 green, with black antenna? and tarsi. 



* Z. melanopa, Linn. (Plate XIX., Fig. 12). Blue, with the 

 pronotum, femora, and tibiae red. Both this and the preceding 

 species live on grass and corn. The larvae have a slimy coating, 

 and live on the blades of these plants. It is common, and 

 widely distributed. 



* L. {Crioceris) merdigera, Linn. (Plate XIX., Fig. 13). Black, 

 with orange elytra and pronotum. It is found on lilies. The 

 larva, which has a slimy black covering, lives on the leaves. It 

 is very rare. 



* L. {Crioceris) duodecimpunctaia, Linn. (Plate XIX., Fig. 14). 

 Elytra orange, with six black spots. It lives on asparagus, and 

 the larva in the seeds. This species is also very rare. 



