228 BRITISH GUIANA TIPULIDAE 



R2+3, (.'u2, and $n.d A and along most of the veins and deflections of 

 veins. Venation: see pi. Ill, fig. 2. 



Abdominal tergites dark brown, the valves of the ovipositor reddish 

 yellow; sternites dull yellowish indistinctly marked with black; a greenish 

 tinge at the base of the abdomen may, or may not, be natural. 



Habitat.— Bartica., February 17, 1913. 



Holotype,— 9 , Bartica, February 17, 1913. 



Rhipidia conica separates off from all the described forms, with 

 the exception of punctipennis Alexander, in the remarkable tubercle 

 on the mesonotum; to what extent this character is developed in 

 the male sex is uncertain. In another paper (Joum. N. Y. Ent. 

 Soc, XXII, 117; 1914), I have erected the subgenus Conorhipidia 

 to receive these two species, conica being the type of the sub- 

 divi.sion. 



Genus GERANOMYIA Ilaliday 

 1833. GeranoH'yia Haliday, Entomol. Magaz., i, 1.54. 

 Geranomyla insignis Loew 

 1851. Aporoxa insignis Loew, Linnaea Entom., v, 395. 



Many specimens of both sexes; Bartica, A'^ovember 26, 1912 to 

 February 9, 1913, a few in the deep swamps but more attracted to 

 lights in the evening; Mallali, March 18 to March 20, 1913. 

 Geranomyia pulchella sp. n. 



Lobes of the scutum and posterior pleural sclerites black ; wings clear on 

 the costal third, gray at the tip and on the caudal two-thirds; four dark 

 blotches on the costal margin; legs unhanded. 



Male, — length, excluding the rostrum, 5.5-5.8 mm.; rostrum, 3-3.1 mm.; 

 wing, 6.5 — 6.6 mm. , 



Female, — length, e.xcluding the rostrum, 6.4-7 mm.: rostrum, 2.9-3.2 

 mm; wing, 6.7-7 mm. 



Rostrum and palpi dark brownish bhuk, the former moderate in length, 

 the latter two-segmented. Antennae dark brown throughout. Head 

 black with a light gray bloom. 



Pronotum reddish brown. Mesonotal praesculum rich reddish brown, a 

 yellowish blotch on the sides of the sclerite in the neighborhood of the 

 psciidosutural foveae, behind which the whole side of the sclerite is covered 

 by a large blackish blotch; an indistinct dark median vitta on the anterior 

 part of the sclerite; scutum with the lobes black, median and caudal por- 

 tions paler, yellowish brown; scutellum brown; postnotum dark brownish 

 black. Pleura largely black, except the region around the wing-root, 

 the propleurae, and the sternal sclerites which are brown. Halteres light 

 yellow, the knob brown. Legs, coxae and trochanters brown, femora yellow- 

 ish brown throughout, tibiae yellowish brown, the tarsi brown. Wings 

 with the anterior third yellowish hyaline with four dark brown blotches, the 



