64 



DIPTEEA. 



Eristalis trifasciatus, Say, Journ. Acad. Phil. vi. p. 165 7 ; Complete Writings, ii. p. 359 \ 

 Eristalis uvarum, Walk. List Diptera, iii. p. 623 9 . 



Hab. North America 4 , Pennsylvania 5 , Indiana 5 , Georgia 5 , Florida 5 .— Mexico 5 7 8 

 (H H. Smith, &c).; Guatemala (Champion).— South America, Guiana 4 , Brazil 3 5 6 ; 

 West Iothes 1 2 , Cuba 4 5 , Jamaica 9 . 



Sixty-five specimens, from numerous localities and collectors. 



17. Eristalis semulus, sp. n., s $ . (Tab. II. fig. 5, e .) 



Male. Eace densely white-pollinose, with whito pile j a median stripe and the cheeks shining hlack. Antennae 

 reddish-brown. Frontal triangle elongate, shining blaek, with black pile, whitish-pollinose on the sides. 

 Mesonotum with three complete, broad, ashy bands, the first two more or less confluent. Scutellum 

 wholly light reddish-yellow. Abdomen conical ; opaque black : fourth segment with a suhinterrupted 

 metallic band ; second segment with very large light yollow spots, leaving the black X-shaped, extending 

 narrowly along the lateral margins ; third segment with a quadrate yellow spot in front on each side, 

 narrowly separated from the lateral margius ; hind margins of the second, third, and fourth segments 

 narrowly yellow. Legs black, the four anterior tibia? at the base yellowish ; hind femora considerably 

 thickened. Wings hyaline ; grey clouds in the marginal, submarginal, and first posterior oells. 



Female. Eront narrowed above, chiefly opaque brown, shining below ; pile black. The yellow spots of the 

 second abdominal segment smaller, leaving a broader postcrior band; third and fourth segments shining 

 metallic anteriorly, opaque black before the yellow hind margin ; third segment with a rounded opaque 

 spot in the middle in front. 



Length 10-13 millim. 



Hab. Mexico, Pio Papagaio 1200 feet, Chilpancingo 4600 feet, Rincon 2800 feet, 

 Ventade Zopilote 2800 feet, all in Guerrero (H. H. Smith); Guatemala, San Gero- 

 nimo (Champion) ; Panama, Bugaba (Champion). 



Thirteen specimens. 



This species is closely allied to the one mentioned by me from Brazil (Trans. Am. 

 Eut. Soc. xv. p. 280) as possibly being E. agrorum. It differs, however, in the con- 

 tiguity of the male eyes being considerably less in extent, in the spots of the second and 

 third segments not reaching quite to the margins, and in the hind femora being 

 less thickened. 



18. Eristalis ? 



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



A single female specimen of a species allied to E. cemulus. It is smaller, the hind 

 femora are but little thickened, the tibiae are more red, the outer cells of the wings 

 are without grey clouds, the spots of the second abdominal segment are mostly shining 

 metallic, and the remaining segments are opaque, with a narrow, shining metallic, 

 complete band. 



19. Eristalis minutalis, sp. n., s 2 . (Tab. II figg. 6, $ ; 6«, head.) 



Face densely, ncarly white-, pollinose and pilose. Checks, a median facial stripe, and a small spot on the 

 frontal triangle shining black. Frontal triangie black-pilose. Eyes narrowly contiguous. Antennse 



