148 Bulletin Wisconsin National History Society. [.Vol. 9, No. 4. 



most common and most widely distributed of the entire family. 

 On these accounts its identification should be made easy and cer- 

 tain, a fact not true up to the present writing excepting the evi- 

 dence of its identity afforded by certain of its well-known hosts ; 

 but hosts in this genus are apparently extraspecific, hence identi- 

 fication of the species according to the host is more or less hazard- 

 ous, depending upon circumstances. Originally the species was 

 erroneously described and figured, its antennae were variously 

 considered as 5 or 8-jointed, usually without a ring-joint, the 

 club variously considered a single, solid piece or else consisting 

 ot 3 more or less distinct joints, the figures of the antennae did 

 not agree with the accompanying descriptions and thus one was 

 left to the necessity of chosing, an obvious fault in taxonomic 

 work. Originally, Riley (1871) described the antenrue as being 

 5-jointed (the club solid, the ring-joint absent) and in redescrib- 

 ing it as T richo gramma pretiosa in 1879, the same statement was 

 repeated; but later a statement was made that the ring-joint 

 was not considered to be a true joint and thus left uncounted, in- 

 timating plainly that it was present in this species, hence the an- 

 tenna of Tricho gramma Westwood was understood by Riley to be 

 6-jointed, the club being composed of 3 supposedly coalesced 

 joints, hence by inference, solid. Reading between the lines it is 

 not difficult to infer the antennal structure of minntum as vari- 

 ously described thus — scape, pediced, 1 ring-joint (inferred to be 

 purposely neglected in the count by Riley), 2 funicle joints and a 

 solid club (from analogy or suggestion supposed to be three 

 coalesced joints, which, however, were not visible) this inferred 

 structure agreeing with the known facts. 



From the large series of specimens listed beyond, I have drawn 

 up the following redescription of the species : 



