DIPTERA. 219 



CEROPLATUS. 



Ceroplatus, Bosc, Actes Soc. d'Hist. Nat. de Paris, i. p. 42 (1792). 



1. Ceroplatus bellulus, sp. n. (Tab. IV. figg. 3, 3 a, <3 .) 



<$ . Head black, the narrow face and the palpi brownish. Antennae brownish-black, the first two joints 

 somewhat yellowish; flagellum broad and flattened, about twice the length of the head. Mesonotum 

 not shining, brownish in colour ; in the middle with two coalescent stripes, terminating acutely behind 

 and separated from a moderately broad oblique stripe of the same colour on each side by a slender 

 V-shaped brown marking. Pleurae light yellow along the noto-pleural suture and below the root of the 

 wing, brown elsewhere. Scutellum brownish. Metanotum yellowish. Halteres blackish, with a yellow 

 stem. Abdomen brown, blackish at the tip ; the anterior part of the fourth and fifth segments yellow. 

 Coxa? yellow, the distal half of the two posterior pairs brown ; femora yellow ; tibiae and tarsi brownish. 

 Wings tinged with brownish ; auxiliary vein strong, not connected with the first vein ; the third vein 

 arising about opposite the middle of the distance between the humeral cross-vein and the tip of the 

 auxiliary vein ; anterior branch of the third vein oblique, terminating a little distance beyond the tip of 

 the first vein, the costal section intervening not as long as the branch; the costal vein extends a little 

 distance beyond the tip of the third vein ; prefurca of the fourth vein nearly as long as the first section 

 of the third. Length 5 millim. 



Hab. Mexico, Teapa in Tabasco (H. H. Smith). 

 One specimen. The tibiae are without bristles. 



SCIOPHILA. 



Sciophila, Meigen, Syst. Beschr. i. p. 245 (1818). 



l. Sciophila — -? 



S . Head black, opaque. Antennae brown, the basal portion yellowish ; in length about equal to twice that 

 of the thorax. Mesonotum dark brown, somewhat yellowish on the lateral margins. Pleurae yellow 

 below posteriorly. Metanotum brown. Abdomen deep brown, the segments somewhat yellowish in 

 front. Legs yellow, the tarsi brownish. "Wings cinereous-hyaline ; anterior branch of the third vein 

 rectangular, the cell before it about three times as long as wide ; prefurca of the fourth vein longer 

 than the branches ; the posterior furcation takes place a little before the anterior cross-vein. Length 

 3| millim. 



Hab. Mexico, Omilteme in Guerrero 8000 feet (//. H. Smith). 



NEOGLAPHYROPTERA. 



Glaphyroptera, Winnertz, Pilznmcken, p. 45 (781) (1863) (nomen praeocc). 

 Neoglaphyroptera, Osten Sacken, Cat. Dipt. 1878, p. 10. 



l. Neoglaphyroptera amabilis, sp. n. 



«J . Head yellow. Antennae longer than the head and thorax together ; black, the scape and first three or 

 four joints of the flagellum yellow. Thorax yellow; mesonotum with a large, deep, shining black spot 

 on each side, leaving a narrow median stripe and the front part yellow. Metanotum and mesopleurae 

 shining black ; immediately subjacent to the root of the wings the colour is blackish. Abdomen brownish- 

 black, with the anterior margin of each segment and the venter yellow. Legs yellow ; the tip of the 

 hind tibiae and the tarsi brownish ; front tarsi nearly two and a half times the length of the tibiae, 



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