928 MOSQUITOES OF NORTH AMERICA 



Megarhina Giles, Handb. Gnats or Mosq., 119, 1900. 



Megarhinus Theobald, Journ. Trop. Med., Iv, 234, 1901. 



Toxorhynchites Theobald, Journ. Trop. Med., Iv, 234, 1901 (without species). 



Toxorhynchites Howard, Mosquitoes, 155, 235, 240, 1901. 



Megarhinus Howard, Mosquitoes, 235, 240, 1901. 



Megarhinus Theobald, Mon. Culic, i, 215, 1901. 



Toxorhynchites Theobald, Mon. Culic, i, 244, 1901. 



Megarhina and Toxorhynchites Giles, Handb. Gnats or Mosq., 2 ed., 265, 278, 1902. 



Megarhinus and Toxorhynchites Neveu-Lemaire, M6m. Soc. Zool. France, srv, 206, 



207, 1902. 

 Megarhinus and Toxorhynchites Neveu-Lemaire, C. R. Soc. Biol. Paris, liv, 1330, 



1902. 

 Megarhinus and Toxorhynchites Theobald, Mon. Culic, iii, 113, 119, 1903. 

 Ankylorhynchus Lutz in Bourroul, Mosq. do Brasil, 53, 65, 1904. 

 Megarhinus Lutz in Bourroul, Mosq. do Brasil, 53, 64, 1904. 

 Lynchiella Lahille, Act. y Trab. 2 Congr. Med. Latino-Americano, 11, 13, 1904. 

 Megarhinus and Toxorhynchites Blanchard, Les Moust., 220, 229, 1905. 

 Ancylorhynchus Blanchard, Les Moust, 626, 1905. 

 Megarhinus Dyar, Proc. Ent. Soc Wash., vii, 45, 46, 1905. 

 Megarhinus Theobald, Gen. Ins., Dipt, 26"'« fasc, 12, 1905. 

 Toxorhynchites Theobald, Gen. Ins., Dipt., fasc, 26, 13, 1905. 

 Worcesteria Banks, Philippine Journ. Sci., 1, 779, 1906. 

 Megarhinus Dyar & Knab, Journ. N. Y. Ent Soc, xiv, 178, 1906. 

 Megarhinus Coquillett U. S. Dept Agr., Bur. Ent., Tech. Ser. 11, 14, 1906. 

 Megarhinus Dyar & Knab, Smithson. Misc. Coll., quart iss., xlviii, 241, 1906. 

 Megarhinus Howard, Osier's Modern Medicine, i, 372, 1907. 

 Megarhinus Autran, Anal. Dep. Nac. Hig., xiv, 9, 1907. 

 Megarhinus, Ankylorhynchus and Toxorhynchites Theobald, Mon. Culic, iv, 126-127, 



1907. 

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

 Megarhinus and Ankylorhynchus Peryassti, Os Culic. do Brazil, 33, 1908. 

 Megarhinus Williston, Man. No. Am. Dipt, 3 ed., 107, 1908. 

 Megarhinus Leicester, Stud. Inst. Med. Res., Fed. Malay Sts., iii, pt 3, 48, 1908. 

 Teromyia Leicester, Stud. Inst Med. Res., Fed. Malay Sts., iii, pt 3, 48, 49, 1908. 

 Toxorhynchites Leicester, Stud. Inst. Med. Res., Fed. Malay Sts., ill, pt 3, 48, 59, 1908. 

 Megarhinus, Ankylorhynchus and Toxorhynchites Theobald, Mon. Culic, v, 88, 1910. 

 Worcesteria Theobald, Mon. Culic, v, 110, 1910. 

 Toxorhynchites Edwards, Bull. Ent. Res., iii, 2, 1912. 



The type species are: Of Megarhinus Eobiaeau-Desvoidy, Oulex hwmor- 

 rhoidalis Fabrieius; of Toxorhynchites Howard, Megarhirms rutila Coquillett; 

 of Toxorhynchites Theobald, Toxorhynchites brevipalpis Theobald ; of AnJcylor- 

 hynchus Lutz, Culex violaceiis Wiedemann; of Lynchiella LahiUe, Oulex 

 hcBmorrhoidalis Fabrieius; of Worcesteria Banks, Worcesteria grata Banks; 

 of Teromyia Leicester, Teromyia acaudata Leicester. 



Geneeic Diagnosis or Adxilt: 



Proboscis rather long, tapering to a fine apex, rigid, curved downward. Palpi 

 in the male long and acuminate, upcurved; in the female of different lengths In dif- 

 ferent species, long and stout in the American species, shorter in the Old World 

 species, in a few American species similar to those of the male. Antennae filiform 

 in the female, delicate, the joints subequal, the second longer and thickened, with 

 median hair-whorl, the other joints with basal whorls of moderately long sparse 

 hairs, interrupted on side towards palpi; densely plumose in the male, the shaft 

 stout and rigid, with the second joint long and stout and the last two joints long and 

 slender. Eyes contiguous above and beneath in both sexes. Prothoracic lobes 

 prominent but well separated. Mesonotum without setss on the disk. Scutellum 

 collar-like, not lobed. Postnotum nude. Abdomen subcylindrical In the female, 

 rather obtusely tapered at the tip; more elongate in the male, expanded and de- 

 pressed towards the apex. Wings narrow; second marginal cell very short; second 

 posterior cell much shorter than its petiole. Legs rather long, slender, the claws 

 simple in the female, toothed and unequal in the male. The species are large and 

 are remarkable for the brilliant metallic colors of their scale covering. Some species 

 have tufts of long modified scales at the sides of the last two or three abdominal 

 segments. 



