98 COLEOPTERA. 



(at Ithaca) about the middle of May. The perfect in- 

 sect escapes early in June. 



This species infests apple, quince, pear, June-berry, 

 mountain ash and hawthorn. 



Remedies. — Same as for the Flat-headed Borer, ex- 

 cept that the soap need be applied only to the base of 

 the trees. 



(1,500; 3, 1., 42; 4. 1-. 11; 4- III. ,321; 6, 1., 26, 47). 



The Oak-pruner, Elaphidion villostim Fabr. (2, 98). 



The Girdler, Oncidees cingulatus S^y. (i, 498; 5, 

 I., 76). 



CHRYSOMELlDyE {Leaf Beetles). 



" The Leaf-Beetles are oval or oblong, often very 

 thick and convex above, with short antenna, round, 

 prominent eyes, with a narrow, cylindrical thorax, 

 and the hinder thighs often much thickened in the 



l'^^- middle, while the abdomen has five free segments. 



f The larva; are short, rounded, cylindrical or flattened, 



generally of soft consistence, usually gayly colored, 

 and beset with thick flattened tubercles or branching 

 spines, and well developed thoracic feet. There are 

 estimated to be from 8,000 to 10,000 species. They 

 are found feeding, both in the larva and adult stages, 

 on leaves, either on the surface, or, as in Hispa and 

 several species of Haltica, their larva; are leaf-miners." 

 (Packard, i, 501). 



The Three-lined Leaf-Beetle, Lema {Crioceris) trilin- 

 eata Oliv.— The beetles appear in June, and lay their 

 eggs in small clusters, six or eight in a cluster, on the 

 leaves of the potato. The larva; feed on the leaves, 

 and may be easily recognized by a habit they have of 



