128 A Monograph of Culicidae. 



most cases dark, but on the extremity of the two first segments and the 

 middle part of the second are iridescent blue and red scales ; the dark 

 scales also have a metallic brilliancy of a dark violet hue ; on the ventral 

 sides of all the segments are many yellow scales with a golden sheen. 



Antennae. — Smaller than the palpi (but longer than their first two 

 segments), hairs dark, smaller ones with a white sheen. 



Clypeus.— Clypeus same colour as the torus of the feelers. Eyes 

 brown. 



Occiput. — Flat scaled ; sea green with darker ones at the back and 

 on the sides white. 



Mesonotum, black with sea green scales, brilliant ; a great many 

 golden scales on the scutellum. 



Metanotum bare, greyish-yellow. 



Pleurae and coxae. — Densely covered with white scales. 



Abdomen. — First and second segments green, the third and fourth 

 only so on the anterior areas, the posterior being a little blue ; on the 

 fourth the colour changes to a reddish violet and continues so until the 

 last segment. Colours very brilliant metallic. No caudal tuft. Below 

 yellow or white with the exception of a middle column of violet which 

 is pointed and dilated on all the segments. 



Legs all one colour, violet blue, with metallic tints, no white bands, 

 but with under side of coxae of a light dull golden colour. 



Note. — Described from a specimen reared from a larva found in 

 bromelia water near Sao Paulo." 



Genus MEGARHINUS. Robineau-Desvoidy. 

 Lynchiella. Lahille. 



Essai sur les Culicides, Mem. Soc. d'Hist Nat. de Paris, III. (1827), p. 412 ; 

 Dipt. Exotica, 1, pi. 1, fig. 1 (1838), Macquart; Proc. Linn. Soc. N. S. 

 Wales, III., p. 1729 (1889), Skuse; Regne. Anim. V. 439; Cur et 

 Latreille (1829); List. Dipt. Brit. Mus. I., p. 1 (1848), Walker; Dipt. 

 Argentina, p. 31 (1891), Arribalzaga ; Mono. Culicid. I., p. 215 (1901), 

 and III., p. 113 (1903), Theobald; Genera Insectorum, Fam. Culicid. 

 p. 12 (1905), Theobald; Les Moustiques, p. 220 (1905), Blanchard ; 

 Class. Mosq, Tec. Se. 11, U. S. Dep. AgrL, p. 14 (1906), Coquillett. 



SYNOPSIS OF THE GENUS MEGARHINUS. 



Apex of abdomen with no lateral tufts. 



Tarsals with some white bands ferox. Wied. 



Tarsals unhanded. 



Abdomen olive green longipes. Theob. 



Abdomen violet and purple minimis. Theob. 



