84 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Ground-color of the elytra creamy white ; in sexually mature specimens 

 the greater part of the disc becomes suffused with dull red and those 

 parts that remain pale take on a yellowish-silvery luster. The red 

 color occupies the posterior two-thirds of the disc, beginning behind 

 the humeral lunule ; a broad outer margin and narrow margins around 

 the dark pattern are silvery. The elytral pattern consists of a double 

 sutural stripe, to which are joined a heavy arcuate stripe along the 

 middle third and a spot near the apex; the humeral lunule is double 

 to beyond its middle and its inner branch extends obliquely close to 

 the upper end of the arcuate mark ; the humeral lunule encloses two 

 spots which are sometimes joined ; close to the outer margin near its 

 middle is a small spot and there are a number of irregular small spots 

 scattered over the disc. The epipleura are pale, with their outer and 

 inner margins ferruginous. The punctures limiting the elytral pattern 

 arc coarse and close and the markings are distinctly convex. The 

 punctuation of the pale surface is coarser and closer than in C. scalaris. 

 The head and pronotum are finely alutaceous and coarsely punctured ; 

 the punctures of the pronotum are finer upon the disc, although nearly 

 as dense as at the sides ; towards the sides there is a depression of con- 

 fluent punctures. The labrum is ferruginous and there is a ferruginous 

 spot upon each mandible. The claws are but slightly divergent. Length, 

 7 to 8 mm. 



Food plant: Corylus americana Walt. 



Localities: West Springfield (21 May, 1903, 15 June, 1901, 

 13 July, 1902, 5 August, 1900, Knab), Chicopee (24 July. 1892, 

 Knab), Westfield (5 September, 1903, Knab), Wilbraham 

 (19 June, 1903, Knab), Notch Road, Mount Holyoke (24 June, 

 1898, Knab), Massachusetts; Canobie Lake (2 July, 1892, 

 G. Dimmock), New Hampshire; Port Huron (June, Hubbard 

 and Schwarz), Michigan; Marshall County (11 June, 1903, 

 W. S. Blatchley), Indiana; Glen Ellyn (5 June, 1904, A. B. 

 Wolcott), Illinois; Central Illinois (April, 1883, O. S. West- 

 cott) ; Beaver Dam (W. E. Snycler ), Milwaukee County (June, 

 F. Rauterberg, 20 July, 1900, C. R. Brown), Wisconsin; Olm- 

 stead County, Minnesota (C. N. Ainslee ) ; Creve Coeur Lake. 

 St. Louis County (17 July, 1903, G. W. Bock), Missouri; 

 Onaga (3 June, 1901, F. F. Crevecoeur), Kansas; Deer Park 

 (4 July, Hubbard and Schwarz), Maryland. 



Type Catalogue No. 12571, U. S. National Museum. 



Cotypes in the collections of the U. S. National Museum and 

 of the author. 



This species feeds exclusively upon the hazel, both in the 

 imago and the larval states, and as far as known it is the only 

 species of Calligrapha found upon this plant. While the elytral 



