HiEMAGOOUS 863 



descriptive notes. The apparent banding of the tarsi would seem to prevent its 

 being referred as a synonym to Culiseta impatiens (see page 483). The speci- 

 mens referred to by Howard as Culcx excrucians (U. S. Dept. Agr., Div. Ent., 

 Bull. 4, new ser., p. 22, 1896, and Bull. 25, new ser., p. 20, 1900) are Mansonia 

 perturbans. 



Genus H.ffi:MAGOGIIS Williston. 



Hcrmagogus Williston, Trans. Ent. Soc. Lond., 1896, 271, 1896. 

 Aedes Giles (in part), Handb. Gnats or Mosq., 343, 1900. 

 Hcrmagogus Theobald, Journ. Trop. Med., iv, 235, 1901 (without species). 

 Hwmagogus Theobald, Mon. Culic, ii, 238, 1901. 

 Hcrmagogus Giles, Gnats or Mosq., 2 ed., 485, 1902. 

 Hcrmagogus Neveu-Lemaire, M6m. Soc. Zool. France, xv, 224, 1902. 

 Hcrmagogus Neveu-Lemaire, C. R. Soc. Biol. Paris, liv, 1331, 1902. 

 Hcrmagogus Theobald, Mon. Culic, iii, 308, 1903. 

 Hcrmagogus Theobald, Entomologist, xxxvi, 282, 1903. 

 Hcrmagogus Lutz in Bourroul, Mosq. do Brasil, 54, 1904. 

 Hcrmagogus Blanchard, Les Moustiques, 412, 1905. 

 Stegoconops Lutz, Imprensa Medica, 1905, 83, 1905. 

 Ha'magogus Theobald, Mosq. or Culic. of Jamaica, 8, 1905. 

 Ha^magogus Theobald, Gen. Ins., Dipt., fasc. 26, 37, 1905. 

 Aedes Dyar & Knab (in part), Journ. N. Y. Ent. Soc, xiv, 178, 188, 1906. 

 Ha'magogus Coquillett, U. S. Dept. Agr., Bur. Ent., Tech. Ser. 11, 14, 25, 1906. 

 Cacomyia Coquillett, U. S. Dept. Agr., Bur. Ent., Tech. Ser. 11, 16, 25, 1906. 

 Hcrmagogus Dyar & Knab (in part), Proc Biol. Soc. Wash., xix, 165, 1906. 

 Hcrmagogus Dyar & Knab, Can. Ent., xxxix. 48, 1907. 

 Hcrmagogus Theobald (in part), Mon. Culic, iv, 550, 1907. 

 Cacomyia Theobald, Mon. Culic, iv, 554, 1907. 

 Stegoconops Peryassti (in part), Os Culicid. do Brazil, 34, 1908. 

 Hcrmagogus PeryassG, Os Culicid. do Brazil. 37, 1908. 

 Hcrmagogus Williston, Manual No. Amer. Dipt, 3 ed., 108, 1908. 

 Hwmagogus Dyar & Knab, Can. Ent., xl, 310, 1908. 

 Hcrmagogus Theobald (in part), Mon. Culic, v, 493, 1910. 

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

 Stegoconops Theobald (in part), Mon. Culic, v, 605, 1910. 



Stegoconops Howard, Dyar & Knab, Mosq. No. & Centr. Amer. & W. Ind., i, 53, 64, 

 145, 147, 149, 150, 1913. 



The type species are: Of Hcemagogus Williston, HcBmagogus splendens 

 Williston ; of Stegoconops Lutz, Hcemagogus capricornii Lutz ; and of Cacomyia 

 Coquillett, Hcemagogus albomaculatus Theobald. 



Generic Diagnosis of Apult: 



Proboscis long and slender. Palpi short in the female, in the male short In some 

 species, long in others. Head elongated. Antennae filiform in the female, the joints 

 subequal, with basal whorls of sparse and moderately long hairs, plumose in the male. 

 Prothoracic lobes large, closely approximate above, collar-like, the setae inserted 

 along the apical margin. Mesonotum without conspicuous setae on the disk. Scu- 

 tellum trilobate. Postnotum nude, sometimes with a few small setae posteriorly. 

 Abdomen subcylindrical in the female, tapering toward the tip; in the male more 

 elongate, depressed, somewhat expanded apically. Legs rather long and slender, the 

 claws in the female equal, toothed on the front and middle legs in some species, 

 simple in others; in the male unequal and some of them toothed. 



Genebic Diagnosis of Laeva: 



The larvae show the same generic characters as those of Aedes. (See page 612). 



Tropical America. 



The genus Hmmagogv^ is closely related to Aedes, and, in the larva, shows 

 no peculiarities available for generic definition. The male genitalia also show 

 close resemblance to Aedes and exhibit all the structures of the typical forms 

 of that genus ; the only peculiarity is the presence of large leaf-like scales on the 

 side-pieces, and this is manifestly a weak character. The imagos differ from 

 Aedes primarily by the large collar-like prothoracic lobes, such as occur in most 

 Sabethini ; the resemblance to these is enhanced by the reduction of the thoracic 

 bristles, the vestiture of flat metallic scales and the absence of upright forked 



