DIPTERA. 225 



brownish near the humeri. Pleurae brownish. Scutellum yellowish-red, shining, blackish at the base. 

 Abdomen subcylindrical ; light yellow, the first segment black, the tip brownish. Legs yellow ; femora 

 in part, and the four posterior tibiae at the base and extreme tip, brown or brownish ; hind femora 

 thickened ; metatarsi as long as the following joints together ; claws strong. Wings whitish ; the first 

 vein terminates near the middle of the wing, the third is much prolonged, distinctly separated throughout 

 from the first vein, the intervening cell of nearly equal width in its whole extent ; the furcation of the 

 fourth vein occurs a little before the cross-vein. Length 3| millim. 



Hab. Mexico, Medellin near Vera Cruz (H. H. Smith). 



One specimen. The species belongs in Winnertz's second division of the genus. 

 The claws are simple, and the femora are unarmed. 



HETEROMYIA. 



Heteromyia, Say, Amer. Ent. ii. t. 35 (1825) ; Compl. Wr. i. p. 79, t. 35. 



l. Heteromyia clavata, sp. n. 



5 . Head and basal joints of tbe antennae red ; distal antennal joints blackish. Palpi slender, brown. 

 Thorax obscurely ochraceous-yellow, the pleurae in part brown ; wholly opaque. Abdomen spatulate, 

 yellowish and brownish. Legs yellow ; middle and hind tibiae with two brown rings before the tip ; 

 joints of the middle and hind tarsi narrowly brown at the tip ; front femora with a brown spot near 

 the end. Front femora much thickened and with short spines below on the inner side ; front tibiae 

 terminating in a stout spine or spur ; middle and hind femora clubbed at the extremity ; hind tarsi 

 extraordinarily elongated, longer than the whole body ; the single claw of the hind feet is very long and 

 stout. Wings hyaline, with a large irregular brownish spot in the middle, and a small spot of the same 

 colour in the axillary cell, near the last vein ; the furcation of the fourth vein occurs before the origin of 

 the third vein. Length 4-5 millim. 



Hab. Mexico, Vera Cruz (H. H. Smith). 



A single specimen. Structurally, this species must be very much like the type of 

 the genus, and I hesitated at first in treating it as distinct from the variety mentioned 

 by Say as having the " thorax entirely testaceous." The markings of the wings, 

 however, are very different, and the four posterior " thighs" are considerably dilated 

 at the tip. 



TIPULmffi (p. 6). 

 TEUCHOLABIS (p. 6). 

 3. Teucholabis annulata. 



Teucholabis annulata, Willist. Trans. Ent. Soc. Lond. 1898, p. 290, t. 10. f. 63 \ 

 Hab. Mexico, Teapa in Tabasco {H. H. Smith). — Antilles, St. Vincent 1 . 



A single specimen, agreeing well with the description and figure *. The species is 

 related to T. molesta, O. Sack. The sides of the occiput are yellow. 



* In the fourth line of the description for " broad " read " black." 



biol. centb.-amer., Dipt., December 1900. 2 g 



