286 T D. A. Cockerel! — Description of Tertiary Insects. 



Tipulidse, but not at all resembling Hepialidse. The extreme 

 brevity of the wing-sheaths also indicated a Tipulid, although 

 the characteristic respiratory processes were not preserved. 

 The pupa of Dicranota has five pairs of ventral pseudopods or 

 tubercles (cf. Miall, Trans. Ent. Soc. Lond., 1893, pi. xiii) ; the 

 fossil pupa has the three posterior pairs well represented, only 

 between them is a third, so that each segment has a little row 

 of three closely adjacent tubercles. There are very distinct 

 lines marking the middle segments, as in the pupa of Tipula 

 flavicans (cf. .Needham, Bull. 68, JSTew York State Museum, 

 pi. 10). 



Fig. 4. 



Tipula hepialina Ckll. 



Hah. — Miocene shales of Florissant, Colorado, Sta. 23 

 (W. P. OocJcerell, 1908). 



Tipula sp. 



nov, 



A specimen in the Museum of Yale University, collected at 

 Florissant (Miocene shales) by Mrs. C. Hill, is remarkable for 

 the length of the legs. The venation cannot be made out, so 

 it is hardly practicable to name the species. The specimen, a 

 male, measures as follows in mm. : 



Wing 14r|; body about 15; middle femur 10; middle tibia 

 + tarsus 26-f ; hind leg 44. 



Tipula clauda Scudd., with wings about the same size, has 

 the hind legs distinctly shorter ; the combined femora, tibiae 

 and tarsi (measurements given separately by Scudder) meas- 

 uring 37*7 mm . None of the Scudderian species show such 

 measurements as ours, which is presumably new. 



Mr. D. W. Doane kindly examined the legs of the living 

 species of Tipula, and found that some have them fully as 

 long. Thus he found Tipula infuscata S to measure as 

 follows in mm. : wing 16 ; body 16 ; middle femur 13; middle 

 tibia + tarsus 30 ; hind leg 56. 



