852 CHARLES PAUL ALEXANDER 



Larch Meadows, near Ithaca, New York, on May 15, 1917, where they 

 were associated with larvae of Rhamphidia mainensis, Pseudolimnophila 

 luteipennis, Tipula dejecta, and other swamp-inhabiting species. 



Larva.- Very similar to that of P. luteipennis, but body is darker and is conspicuously 

 blotched with whitish, especially on posterior parts of ventral segments. Mouth parts 

 nearly the same in the two species. Antenna (Plate XXXIX, 174) with two very long and 

 slender terminal papillae, one blunt at tip, the other much longer and tapering gradually 

 to tip. 



Pupa.- Very similar to that of P. luteipennis, but somewhat smaller and darker-colored. 

 Pronotal breathing horns (Plate XL, 177) darker brown, the divergent terminal flaps pro- 

 portionately a littlemore elongate, equal to almost one-quarter length of entire horn. Dorsal 

 lobes at base of ovipositor more attenuated. 



Nepionotype Larch Meadows, Ithaca, New York, May 15, 1917. No. 53-1917. 

 Neanotype Larch Meadows, Ithaca, New York, May 25, 1917. No. 53-1917, cast 

 pupal skin. 



Subtribe Dactylolabaria 



The division Dactylolabaria is proposed for the genus Dactylolabis, 

 a small group of curious crane-flies which are still not well understood. 

 The adult flies bear a striking resemblance to species of the genus Lim- 

 nophila, but the larvae and the pupae show characters that are not found 

 in the more specialized divisions of the Hexatomini. The type of the 

 genus is Limnophila montana O. S. of the eastern United States. Other 

 Nearctic species included are L. damula O. S. (western United States), 

 L. rhicnoptiloides Alex, (northwestern Canada), L. cubitalis 0. S. (eastern 

 United States), L. nitidithorax Alex, (western United States), and L. 

 hortensia Alex, (western Canada). , \ 



The immature stages of two European species D. wodzickii (Now.) 

 and D. denticulata Bergr. have been made known by Nowicki (1867: 

 340-343) and by Mik (1894), respectively. Their descriptions of the 

 details of the larval head anxl the lateral spiracles of the abdomen of the 

 pupa are incomplete, however. The larvae of none of the American 

 species have as yet been made known, but the pupae of D. cubitalis O. S. 

 were found by Needham and are described hereinafter. 



Genus Dactylolabis Osten Sacken (Gr. finger forceps) 

 1859 Dactylolabis 0. S. Proc. Acad. Nat. Sci. Phila., p. 240. 



Larva. Body very depressed, the ventral surface, especially, being greatly flattened. 

 Head capsule compact; mentum not completely divided, its anterior margin with seven 

 teeth. Mandible with but few lateral teeth. 



