HYMENOPTEROUS PARASITES. 1877 



niate, except the scutellum, which is always yellow; generally, there is a spot or a 

 sutural liue before the wings, and a spot or line beneath ; the post-sciitellum is often 

 reddish ; legs honey -yellow : the fore anterior coxae often more or less yellow or honey- 

 yellow, sometimes black spotted with yellowish beneath; the posterior coxae are gen- 

 erally black, sometimes more or less ferrnginous, their trochanters generally half 

 black and half honey-yellow; sometimes their femora are entirely black, or half black, 

 generally only tipped with black, rarely entirely honey-yellow, their tibiae tipped with 

 black ; the general color of the legs varies from lemon-yellow to ferrnginous ; abdo- 

 men depressed, opaque, sometimes entirely yellowish ferruginons, but generally black, 

 with the second and third, and sometimes part of the fourth segments ferruginous or 

 yellowish ferruginous ; the first segment is either entirely ferruginous, or black tipped 

 with ferruginous, or with two apical yellow spots; the second and third segments are 

 entirely ferruginous, or yellow stained with ferruginous; the fourth is either entirely 

 black, or black spotted with ferruginous, or entirely ferruginons; the remaining seg- 

 ments are generally black or brown, often more or less varied with ferruginous; sev- 

 eral specimens have the second and third segments bright yellow and the rest black. 

 Length, 10.5 to 14.7 mm. (After Cresson.) 



This is a very variable species. The specimen described by Dr. Pack- 

 ard as Ichneumon tharotis was an extreme variety of the female. It was 

 reared by Mr. Scudder, June 2, from Piiyciodes tharos. Mr. Cresson 

 records it from Canada, Maine, Massachusetts, Connecticut, New York, 

 New Jersey, Vij'ginia, Georgia and Colorado, but does not know its host. 

 During July, 1887, a single specimen of a variety of the male was received 

 from Mr. Scudder, with the statement that he had reared it from the 

 chrysalis of Oeneis semidea. 



Ichneumon versabilis Cresson. PI. 88, fig. 2. 



Male. — Dull black; line on anterior orbits, face, clypeus, mandibles, labrum, palpi, 

 scape beneath, anterior margin of tegulae, line before, another beneath, scutellum, some- 

 times a spot or line behind, dot on four anterior coxae and trochanters beneath, their 

 knees, tibiae and tarsi, anterior femora in front, posterior tibiae and tarsi except tips, 

 sometimes two dots or a line at tip of first abdominal segment, and the second and third 

 more or less, all bright yellow; occasionally the base of second and third segments is 

 margined with dull ferruginous, and the apical middle more or less varied with black, 

 sometimes interrupting the yellow on third segment into two spots, and in one speci- 

 men these are reduced to mere dots, and the yellow on second segment interrupted 

 medially by a black line ; wings subhyaline ; postpetiole aciculated ; gastrocoeli large 

 and deep ; antennae more or less pale beneath ; posterior femora sometimes pale at 

 base. Length, 12 to 13 mm. (From Cresson.) 



Of this species I have seen two specimens of a variety of the male. 

 Both were sent by Mr. Scudder. One specimen was obtained in Ver- 

 mont from Heodes hypophlaeas, and the other by Dr. G. Dimmock from 

 Polygonia faunus. It is recorded by Mr. Cresson from Canada and the 

 United States. Both specimens were accompanied by the chrysalids from 

 which they had emerged, and in each case the chrysalis was decapitated. 



Genus IIOPLISMENUS Gravenhorst. 



Parapsidal furrows of mesoscutum indicated anteriorly; mesoscntellnm strongly 

 elevated, abruptly declivous behind ; metanotam always bispinose, metanotal spiracleg 



