466 Annals Entomological Society of America [Vol. VI, 



38. Thoracic dorsum with two velvety black spots each side behind the 



transverse suture. Fuscous spot at beginning of praefurca well 

 marked. Abdomen orange-yellow above. Hypopygium small; 

 neither pleural suture nor pleural plates; ninth tefgite with a small " 

 semi-circular emargination in its posterior margin; ninth sternite 



with deep, oval emargination. Length 33-36 mm ahdominalis Say 



Thoracic dorsum not as above. The fuscous spot at beginning of prae- 

 furca inconspicuous. Abdomen tawny with fuscous median stripe. 

 Hypopygium of moderate size; ninth tergite broadly emarginate in 

 the middle and narrowly incised laterally on its posterior margin; 

 posterior margin of ninth sternite with a deep V-shaped emargination. 



Length 20mm. ( 9 ) cammiscibilis Doane 



cantaminata Daum sgn. 



39. One or more posterior cells at least in part white 40 



Posterior cells not at all white. Body blackish; abdominal segment 



tipped with pale. Wings brownish towards the apex, a white spot at 

 the exterior margin, surmounted by a fuscous spot. Length 11 mm. 

 ( 9 ) parrii *Kirby 



40. First posterior cell only, white at base. Pale ochraceous. Hypopygium 



large, ninth tergite rounded, black. Length 11 mm. (cf ) 



latipennis Loew 

 More than one posterior cell white at base 41 f 



41. Lateral appendages of the ninth sternite (below the pleural appendages) 



without a lower pendulous, or claw like arm. Hypopygium elongated, 

 posterior margin of ninth tergite produced in the middle in a short, 

 broad three pointed downward-projecting tooth; ninth sternite 

 broadly emarginate posteriorly; from the middle of which arise two 



long strap-like appendages. Length 18 mm madera Doane 



Lateral appendages with a lower pendulous, or claw-like arm 42 



42. Lateral appendages with only two arms 43 



Lateral appendages with three arms , 45 



43. Lower arm of lateral appendage slender, membranous, nearly straight. 



Hypopygium large, ninth tergite with two pendulous processes at its 

 posterior margin. Abdomen with a fuscous stripe each side. All 



posterior cells more or less white. Length llj^ mm fallaxLoew 



Lower arm of pendulous appendage more strongly chitinized, claw-like, 

 tip blackish 44 



44. Lower arm of la'teral appendages short, broad, flat. Grayish brown; 



pleura with an interrupted brown line running from neck to base of 

 wings; posterio-lateral margins of abdominal segments gray- 

 ish. Eight sternite threelobed; posterior margin of ninth sternite with 

 downward projecting, three toothed process; two long, slender blade ■ 

 like processes arise from the base of the incision of the posterior mar- 

 gin of the ninth sternite. Wings brownish with whitish hyaline spots 



in all the cells. Length 15 mm rohweri Doane 



Lower arm of lateral appendages long, slender. Subtestaceous; first 

 posterior cell almost entirely, fourth at base, white; ninth tergite 

 without pendulous processes. Length 12-14 mm grata Loew 



*May not belong to the genus Tipula. 



fThe differentiation of the seven species under this heading, are based on the 

 table given in Prof. Doanes' paper, entitled "Tipula fallax and others." Psyche 

 Vol. XIII, pp. 160-166. In wing pattern, they, together with Tip. hebes, resemble 

 each other very much and Tip. fallax of the West and Tip. hebes of the East may 

 be looked upon as typical. 



