206 Journal Xew York Entomological Society. [Vol. XXI. 



large, rounded, flagellar segments rounded oval, gradually decreasing in size 

 to the tip; front, vertex and occiput dull black with a sparse grayish bloom. 



Thorax black with a sparse brownish bloom on the sides of the praescutum 

 adjoining the pseudosuture, scutum, scutellum and postnotum black with a 

 brownish bloom. Pleura black with a brown bloom. Halteres, stem light 

 brown, knob darker. Legs, coxae and trochanters dull brownish yellow, re- 

 mainder of the legs dark brownish black. Wings with a dull yellow suffusion, 

 no stigmal spot, veins yellow. Venation, crossveins r and »> obliterated, cell 

 A/, gone by the fusion of Af, and M,, basal deflection of Cm, beyond the 

 fork of M. 



.\bdomen black, the hypopygium a little browner. Male genitalia with 

 the pleural lobes rather stout, with two apical appendages, the more dorsal, 

 fleshy basally and here with long hairs, chitinized on the apical half, the tip 

 deeply bifid; the ventral appendage is subchitinized, cylindrical, simple, the 

 tip rounded. 



Holotype, 3, Almaguer, March ii, 1912. 

 Paratypes, 2 <?, with the type. 



Subfamily TIPULIN^. 

 Tribe Tipulini. 



Genus PACHYRHINA Macquart. 



1 7. Pachyrhina alleni new species. 



Head black, reddish around the base of the antennae; thorax with the 

 predominating color black with narrow yellow lines and spots ; abdomen with 

 the basal half yellowish red, the tip black; wings with a pale brown suffusion. 



Male, length, 10.6-11.2 mm.; wing. 11-12 mm.; antennas, about 3.5-4 mm. 



Rostrum and palpi dark brownish black ; antennae short, blackish, the 

 flagellar segments very short, cylindrical, scarcely concave on the inner face, 

 terminal antennal segments shorter and more slender; frontal tubercle and 

 region around the base of the antennae dull orange-yellow, frontal prolongation 

 of the head, vertex and occiput dark brownish black, genae provided with 

 abundant long black hairs. 



Pronotum dark brownish black, the scutum broadly bright yellow above. 

 Misonotal prascutum orange-yellow, with three very broad black stripes which 

 almost conceal the ground color, the median one very broad in front, narrowed 

 to a point behind at the suture, the lateral stripes begin behind the conspicuous 

 straight pseudosuture and run caudad, interrupted by a dull yellow patch on 

 the lateral angles behind; the yellow ground color of the praescutum is broadest 

 in front before the pseudosuture, almost obliterated behind ; scutum dull yellow, 

 each lobe with a conspicuous black blotch, these being caudal extensions of the 



