H^MAGOGUS EQUINUS 871 



characteristic and suspected an error. Mr. Busck has examined the type of 

 albomaculatus in the British Museum at our request, and reports : 



" Three specimens from British Guiana from Dr. Low, one of them labeled 

 type ; on the type specimen there is a small, probably extraneous, hair on the 

 fourth abdominal segment, which I can not perceive in the two other specimens, 

 which appear quite smooth." 



It therefore appears from Mr. Busck's examination that this seta is ex- 

 traneous, and upon its elimination from the description, we are able to recog- 

 nize the species. It is evidently the one described by Dyar & Knab as Hcema- 

 gogus regalis. 



Coquillett placed albomaculatus in his genus Cacomyia in which the female 

 has toothed claws and a short second marginal cell. This was due to his having 

 misidentified specimens of Hcemagogus capricornii as this species. Theobald, 

 in the fourth volume of his Monograph, p. 554, follows Coquillett in placing 

 albomaculaius in Cacomyia; but the characters there given agree with capri- 

 cornii and the reference will accordingly be found under that species. 



H^ffiMAGOGUS EQUINUS Theobald. 



HcBmagogus equinus Theobald, Entomologist, xxxvi, 282, 1903. 

 Hcemagogus equinus Theobald & Grabham, Mosq. or Cullc. of Jamaica, 37, 1905. 

 Aedes philosophicus Dyar & Knab, Journ. N. Y. Ent. See, xiv, 190, 195, 1906. 

 Aedes philosophicus Dyar, Proc. Ent. Sec. Wash., vili, 19, 1906. 

 Aedes philosophicus Dyar & Knab, Proc. Biol. Sec. Wash., xix, 164, 1906. 

 Aedes affirmatus Dyar & Knab, Proc. Biol. Soc. Wash., xix, 164, 1906. 

 Cacomyia equinus Coquillett, U. S. Dept. Agr., Bur. Ent, Tech. Ser. No. 11, 25, 1906. 

 Cacomyia equina Theobald, Men. Cullc, Iv, 554, 1907. 

 Hwmagogus affirmatus Busck, Smiths. Misc. Colls., quart, iss.. Ill, 64, 1908. 

 Cacomyia equina Theobald, Mon. Culic, v, 494, 1910. 

 Aedes affirmatus Theobald, Mon. Culic, v, 597, 1910. 



Stegoconops equinus Howard, Dyar & Knab, Mosq. No. & Centr. Amer. & W. Ind., 

 i, 53; ii, pi. 23, fig. 162, 1913. 



Oeiginal Desckiption of hwmagogus equinus : 



Head metallic violet, white between the eyes in front; palpi and proboscis black; 

 antennae pale brown. Thorax metallic green; pleurae snowy white. Abdomen 

 bright metallic violet, with three prominent and one faint silvery white basal bands 

 and white lateral spots. Legs unhanded, deep brown; femora white beneath. Wings 

 with violet reflections, iridescent. 



$. Head clothed with flat metallic violet scales, except a patch between the eyes, 

 which are white, and at the sides, where they are grey and black; black bristles 

 project over the eyes, and there is a trace of a narrow pale border surrounding 

 them; clypeus with a frosty sheen; palpi black; proboscis black, curved upwards, 

 nearly as long as the whole body; antennae pale brown, basal segments deep brown, 

 with dusky scales on the large basal and second segments. Thorax black, covered 

 with large flat apple-green metallic scales, rounded at their apices and irregularly 

 disposed over the mesonotum; a patch of almost silvery white ones Just in front of 

 the roots of the wings, with also long dense black bristles; scutellum with flat 

 green and blue scales and black border-bristles; prothoracic lobes and pleurae 

 silvery white. Abdomen rich metallic violet; the first segment with an oblique 

 white line on each side; the second and third unadorned; the fourth with a few 

 large basal white scales; the fifth, sixth and seventh segments with basal white 

 bands; border-bristles short, black; each segment with a large basal silvery white 

 lateral spot; venter pure silvery white; each segment with a median black spot, 

 the last two segments projecting downwards, and giving the appearance of two 

 ventral black tufts. Legs unhanded, deep brown, with metallic violet reflections, 

 and a pale knee spot to the mid and hind pair; femora white beneath; ungues small, 

 equal, and simple. Wings faintly tinged with brown, metallic violet and iridescent 

 in certain lights; first submarginal cell slightly longer and narrower than the second 

 posterior cell, its base nearer the apex of the wing, its stem longer than the cell; 

 stem of the second posterior longer than the cell; posterior cross-vein rather more 

 than its own length distant from the mid cross-vein; halteres with ochraceous 

 stem and fuscous knob. Length, 4-5 mm. 



Hab. Kingston, Jamaica, W. I. 



