248 THE CANADIAN ENTOMOLOGIST. 



intercoxal process, last ventral oval and eroded at tip ; inferior margin of 

 the vertical portion of the abdomen serrulate. Pygiditini with an evident 

 carina, not projecting, coarsely sparsely punctured. Claws similar on all 

 the feet in both sexes, nearly bifid. Length 6 to 8 mm. Width 1.5 to 

 2.3 mm. 



The females at hand differ as follows : Head cupreous or ?eneus, more 

 concaved along the median line, more coarsely sparsely sculptured, an 

 opaque depressed area above the clypeal carina ; sides of prothorax 

 slightly more arcuate \ beneath sparsely pubescent, no erect brownish hair. 



The two extremes in size, as given in the above description, are both 

 females ; the other specimens average 6.5 mm. in length. 



A pair of this species first came to me from Mr. A. B. Champlain, 

 with the label, "Chinchilla, Pa., VII, 2." The past year Mr. H. B. Kirk 

 sent me four male and two females bred from the dead fallen trunk of 

 Crataegus, which was also infested with Xylotrechus colonus and Neoclytus 

 liiscus. The material was collected by Mr. W. S. Fisher, of Highspire, 

 Pa., and Mr. Kirk, at Harrisburg, Pa., March 11, i9ii,andthe specimens 

 are labelled "Emerged IV, 6-11." 



This species should be placed between politus and fallax in Plorn's 

 table, but it resembles neither of them so much as ohsoletogiittatus in size 

 and shape. From the two latter it can at once be distinguished by the 

 lack of pubescent spots on the elytra, and the structure of the claws. It 

 resembles the narrower forms of politus somewhat, but the hairy proster- 

 num will at once separate the males, and the claws, form of prothorax, 

 broader head, and the more parallel form will be sufficient to distinguish 

 either sex in a series qî politus. 



The distribution of the types is as follows : Holotype, allotype and 

 Xy^o paratypes in my collection, a male and female /«r^z/^/^ in the collec- 

 tion of Mr. H. B. Kirk, a male paratype in the collection of Mr. W. S. 

 Fisher, and a male paratype in the collection of Mr. Chas. Liebeck, to 

 whom I am much indebted for comparing many specimens with the Horn 

 types. 



A. cephalicus Lee. — Original description (Trans. Am. Phil. Soc, XI, 

 p. 249). Obscurus, aenescens, capite cupreo. hand pubescente fortiter 

 haud confluenter punctato, sat profunde canaliculato, thorace latitudine 

 haud breviore, dorso canaliculato et biirapresso, lateribus subreclis fortiter 

 impressis, basi bifoveato, angulis posticis oblique carinatis, elytris sat 

 fortiter dense granulatis, subunicostatis, apice subserratis rotundatis. 

 Long, .18-25. Locality : "Middle States and Lake Superior." 



