THE CKANE-FLIES OF NEW YORK PART II 835 



dorsal face, two blunt, approximated, parallel lobes directed cephalad; at the base of long 

 apical lobes, a shorter, pointed, setiferous lobe, directed laterad and dorsad, bearing on its 

 side and near the apex a few setae. Dorsum of segment 8 with four prominent lobes 

 surrounding a hollow, these lobes ending in acute tips, the posterior pair directed more dorsad, 

 the anterior pair directed more laterad, at the base of the latter a pair of spiracles. Female 

 cauda similar but with acidothecae prolonged, bearing on the side prominent lateral lobes 

 (Plate XXXII, 141), corresponding to the setiferous lobe of male as described above; 

 quadrangle of tubercles on dorsum of segment 8 (Plate XXXII, 138) about as in male, all 

 the tubercles ending in chitinized points. 



Nepionotype. Ithaca, New York, May 11, 1917. 

 Neanotype. Ithaca, New York, June 3, 1917. 

 Paratypes. Pupae with neanotype. 



Tribe Hexatomini 



The tribe Hexatomini, as here understood, comprises a very extensive 

 group of medium-sized crane-flies, made up of the members of the former 

 groups Limnophilini and Hexatomini. The more generalized members 

 of the group are herbivorous, but the two highest subtribes, Limnophilaria 

 and Hexatomaria, are carnivorous in their feeding habits. 



The larvae of the lower divisions have the head capsule massive and 

 compact, the mentum chitinized and with the anterior margin toothed, 

 and the hypopharynx usually well preserved. The mandibles are not 

 formed into long, curved hooks, and the maxillae are of a generalized 

 organization. The higher subtribes, Limnophilaria and Hexatomaria, 

 have the head capsule long and slender and very much dissected, with 

 the constituent plates very narrow and separate. The mentum is very 

 reduced or lacking, in some of the Limnophilaria consisting of an articulated 

 transverse bar which is grooved with parallel fine striae. In the group 

 Ulomorphae and in the Hexatomaria the chitinized mental region is 

 nearly, if not quite, lacking, allowing for great distention of this region 

 of the head. The mandibles are powerful, curved hooks, bearing a few 

 teeth at about midlength. In the group Ulomorphae the mandibles 

 are hinged at about midlength, the basal part being deeply grooved on 

 the inner face to receive the blade in a position of rest. The maxillae 

 have the outer lobe prolonged into an elongate flattened blade which 

 extends out of the thoracic orifice when the head is retracted. 



The pupae of the Ularia and the Epiphragmaria have a pair of large 

 spiracles on the dorsum of the eighth abdominal segment, indicating a 

 close phylogenetic relationship with the Limnobiini. Dactylolabis has 



