332 



point and median line, slightly caudad of the posterior one of the pre- 

 ceding pair; in front of wing base is a slight gibbosity which has no 

 elevated thornlike points ; wing sheath without a raised area on sur- 

 face; apices of sheaths of mid tarsi extending to base of last joint of 

 hind pair and distinctly beyond apices of wing sheaths; apices of 

 sheaths of fore tarsi extending to apices of wing sheaths. First 

 abdominal segment with about 6 widely placed weak hairs in a 

 transverse row near anterior margin; segments 2 to 8 each with a 

 transverse series of short stout bristles with alternating slender 

 and, in comparison with other species, short hairs, the bristles 

 on all segments turned upward at apices, most distinctly so on seg- 

 ments 3 to 5 ; spiracles small but very distinct, similar to that of protho- 

 rax, present on segments i to 7 ; posterior to the spiracle on each seg- 

 ment there are 3 moderately long hairs; apical segment as in Figure 5, 

 Plate LXXXIII ; ventral segments each with a transverse pair of rather 

 long slender hairs on each side near middle, the one farthest from 

 lateral margin about midway between that point and median line, the 

 other midway between it and the lateral margin. 



The specimens from which the foregoing description was drawn 

 are those mentioned by Dr. Forbes in his Thirteenth Report* as hav- 

 ing been reared from larvae of Lachnosterna, upon which they are ec- 

 toparasitic. 



Imagines are in the collection here from the following Illinois local- 

 ities : Effingham, Neoga, Urbana, and Algonquin, the dates of occur- 

 rence being in August and September. 



In Riley's figure of Aplio'bautiis iiiiis the apices of the wing sheaths 

 do not extend beyond the apex of the second tarsal joint, the wing 

 sheath has a small protuberance about one third from base near the 

 costa, and there are more than 2 hairs on each side of each ventral 

 segment. 



Anthrax i^ateraus Say 



Anthrax lateralis Say, Jonr. Acad. Nat. Sci. Phil., Vol. 3, 1823, p. 42. 



Pupa. — Length, 14 mm. Testaceous yellow, shining. General 

 habitus similar to that of Bxoprosopa fascipennis. Head with the 

 pair of strong upper thorns contiguous at base, their upper surfaces 

 with a flattened area (PI. LXXXI, Figs 16, 17, and 21) ; below these 

 thorns on each side is a slightly swollen area upon which is a single 

 small tubercle ; on the median line considerably below the level of the 

 lateral tubercles is a pair of small sharp points, best seen when viewed 



*Twenty-fourth Eeport of the State Entomologist on the Noxious and Beneficial 

 Insects of the State of Illinois, 1908, p. 161. 



