198 GEORGE H. HORN, M. D. 



This description applies to the totally black foriii, of which sev- 

 eral varieties are recognized in Europe, one being found in our limits. 



Var. vitis Fab. — Elytra pale brown, sparsely clothed with yellow- 

 ish pubescence, tibise similar in color to the elytra. 



Our two varieties are so sharply separated in color, and almost so 

 in distribution, that they might well be considered distinct species. 

 In both the series of coarser punctures are not evident, except near 

 the side margin. 



The obscnrus form is known to me most abundantly from Cali- 

 fornia and Nevada, with one specimen from Colorado. The vitis 

 form extends from New Hampshire westward to the Lake Sui)erior 

 region, Utah, Colorado and Washington. The specimens from the 

 last three localities are but few in number. 



Eumolphvs cochlearius Say, Long's Second Expedition, vol. ii, p. 

 296; edit. Lee. 1, p. 196, is a synonym of this species as correctly 

 surmised by Kirby and LeConte. 



FIDIA Baly. 



The species of Fidia resemble those oi' Adoxus in form. They are 

 separated by the fact that, in Adoxus the prosternal sutures are dis- 

 tinct, while in Fidia they are entirely obliterated. By the system 

 adopted by Chapuis, and followed by Lefevre, the two genera belong 

 to groups not closely a])proximated. 



The species known to me are as follows : 



Fulvous, varying to pale brown ; punctures of elytral strife not very coarse, in- 

 tervals flat, densely punctured '. TJticida. 



Piceous, or nearly black; punctures of elytral strise coarse and deep, intervals 

 flat, the punctures not dense, but submuricate. 

 Pubescence coarse and fulvous; punctures of thorax coarse and vei-y closely 



placed ; legs piceous, the femora usually pale at base loiigipeiii. 



Pubescence fine and cinereous; punctures of thorax moderately coarse and 

 well spaced; legs black caiia. 



F. viticida Walsh, Pract. Ent. ii, May. 1867, p. 87. 



This species varies in the form of the thorax. In many males the 

 thorax is decidedly longer than wide and the sides feebly arcuate, 

 while in the females the width is always greater than the length. 

 The curvature of the sides varies, so that the thorax may be widest 

 at middle or behind the middle, producing the obtusely subangulate 

 form spoken of by Lefevre. 



A very full account of this insect and its injuries to the vine are 

 given by Mr. Walsh at the place of description. A shorter account 

 will be found in Missouri Reports, pt. 1, p. 132, by Dr. Riley. 



