THE CRANE-FLIES OF NEW YORK PART II 777 



obliquely proximad to near median line, where there is a median lobe densely covered with 

 long hairs. Epipharynx small, subquadrate, margin almost transverse, with about seven 

 blunt teeth; sides of organ with long hairs which are directed backward. Labium (Plate 

 XIV, 12) with submentum much narrowed on basal half, sides subparallel, thence expanded 

 so that cephalic end is about twice as wide as caudal end; anterior lateral margins produced 

 into blunt projections; mentum (Plate XV, 17) broadly subquadrate, anterior margin nearly 

 transverse and with from twenty to twenty-two teeth forming an irregular comb. (There is 

 considerable variation in the shape of this comb and in the form of the individual teeth com- 

 prising it; usually the median third of the mentum is produced outward beyond the lateral 

 parts, but this condition is not always well-marked; the individual teeth may be blunt or 

 acute. In the specimen shown the normal condition is illustrated; the central lobe includes 

 six teeth, and each lateral part about seven teeth, the lateral teeth being usually a little the 

 larger; in some specimens the median lobe has the teeth very indistinct, while in others 

 there is a conspicuous tendency for the median pair to unite into a single broad tooth.) 

 Prementum pale basally, indistinctly covered with pale papillae; palpi lying close together, 

 subparallel, the lateral parts with short, dense hairs, the ventral face with shorter papillae; 

 each lobe bearing at tip a small, blunt, cylindrical knob which is slightly chitinized. Antenna 

 (Plate XV, 18) short, almost cylindrical but slightly narrowed basally, bearing on truncate 

 apex about five sensory papillae of various diameters, one being much the largest, two others 

 being long and very slender; one of the papillae is bisegmented, the apical part being more 

 slender than the basal part. (De Meijere [1916, fig. 14] shows his European Ptychoptera 

 as having the antennae two-segmented and with the sensory papillae very different from 

 the condition found in P. rufocincfa.) Mandible (Plate XV, 19) strong and powerful; cutting 

 edge sub triangular, with three large outer teeth and about six or seven small inner ones; 

 of the larger teeth the outermost is the slenderest, the third is the largest and stoutest; small 

 inner teeth subequal in length, the outermost stout, inwardly the teeth becoming more 

 slender; mandible on ventral face near margin with two powerful setae, the posterior one 

 often recurved, the anterior one directed forward. Maxilla (Plate XV, 19) with cardines 

 roughly elongate- triangular, proximal angle acute, ventral face with three large setiferous 

 punctures bearing several bristles of unequal length (the writer has not been able to locate 

 setae on the middle puncture) ; outer edge of sclerite with a fringe of long hairs, longest at 

 narrow inner end of segment; stipites roughly triangular, with a group of short spines at 

 apex; palpi antenniform, stout, cylindrical, with sensory papillae at tip (one large papilla, 

 about three of medium size, and three or four small ones) ; outer lobe of maxilla with a small, 

 egg-shaped or subcylindrical, knob at its outer angle, below which the rounded lobe is 

 densely clothed with long, pale hairs; caudad of these, along margin, a row of from six to 

 eight powerful spines and a few long hairs. 



Pupa. Total length, 34.3-40 mm. 



Length excluding kreathing tube, 14.5-15.8 mm. 

 Length of breathing tube alone, 19.8-26 mm. 

 Width of body, d.-s., 1.6-1.7 mm. 

 Depth, d.-v., 1.7-1.8 mm. 



Pronotal breathing horns reddish brown, dark brown at extreme base; thorax, wing 

 sheaths, and leg sheaths dark brown; abdomen whitish, with small tubercles and broad 



