186 MOSQUITOES OF NORTH AMERICA 



that the jointing cannot be seen; proboscis rather short, deep violet and expanded 

 apically; antennae verticillate, deep brown, basal joint pale testaceous, with black 

 hairs; second joint testaceous at the base, with brown scales, rather swollen; clypeus 

 grey, nude. 



Thorax deep brown, covered with narrow-curved bronzy scales, except on the base 

 of the wings, where they become broader, and also in front of the scutellum; there 

 are also long bristles over the roots of the wings; prothoracic lobes with pale grey, 

 almost dull white scales; pleurae testaceous, with grey scales; scutellum densely 

 clothed with broad flat scales with violet reflections; there appear to be two long 

 lateral and two small median border-bristles to the mid lobe; metanotum deep black, 

 with a tuft of black chaetae and scales. 



Abdomen testaceous, covered with flat violet scales, brown in some lights, the 

 testaceous ground colour shows through the scales; posterior border-bristles minute; 

 venter pale yellowish-grey, the last segment bristly, the black bristles extending on 

 to the venter. Legs brown, unhanded, with metallic reflections, the apex of the hind 

 tibiae swollen and ciliated; on the apical half is a white patch on the lower surface 

 spreading unevenly on to the upper surface, but not forming a complete band ; knee 

 spots pale; fore and mid claws rather long, equal and simple; hind small, equal and 

 simple. 



Wings densely clothed; first sub-marginal cell longer and narrower than the 

 second posterior, its base nearer the base of the wing, its stem very short, stem of 

 second posterior nearly as long as the cell; posterior not quite its own length distant 

 behind the mid, the mid-cross vein and the supernumerary unite as in Culex; the 

 wings have a pale spot at the base; halteres with pale stem and slightly fuscous knob. 



Length. 6 mm. 



$. Head brown, with flat brown scales, a median area of flat white ones, and flat 

 white ones at the sides; palpi brown, with a few grey scales at the apex; proboscis 

 black; clypeus nude, fawn coloured; antennae brown, basal joint with a few small 

 black bristles. 



Thorax brown, with flattish narrow spindle-shaped bronzy brown scales, which 

 become larger, more elongate and lanceolate before the scutellum; scutellum 

 testaceous, prominently trilobed, with dense flat dusky-black scales with violet re- 

 flections and black border-bristles; metanotum deep brown, with flat white scales 

 and four chaetae in a row; prothoracic lobes with flat dusky scales and black bristles, 

 three prominent ones on each side in front; pleurae ochraceous, with grey and white 

 scales. 



Abdomen covered with dusky black scales with dull violet reflections; venter dull 

 ochraceous. 



Legs brown, with dull ochraceous reflections, bases dull ochraceous; ungues 

 brown, of moderate size, equal and simple. 



Wings with rather broad dense brown scales; first sub-marginal cell longer and 

 narrower than the second posterior cell, its base a little the nearer the base of the 

 wing, its stem about one-third of the length of the cell ; stem of the second posterior 

 nearly half the length of the cell; posterior cross-vein not its own length distant 

 from the mid; the mid cross-vein is not quite in a line with the supernumerary. 



Halteres with deep ochraceous stem and fuscous knob. 



Length. 6.1 mm. 



Habitat. British Guiana (Dr. Low), Brazil (Dr. Lutz). 



Observations. Described from a single perfect c? sent by Dr. Lutz. The $ de- 

 scribed here taken by Dr. Low in the bush on the Demerara River bears a strong 

 resemblance to the (^, that I have provisionally placed it here, with some doubt, how- 

 ever, as the legs have no white area as seen in the J", and the metathoracic scales 

 are white, whilst Dr. Lutz says of the J' that they are white and blue (none remain 

 on the specimen sent) ; these may nevertheless be only sexual differences. It bears 

 a certain resemblance to Joblotia lunata, but the abdomen has not lateral apical 

 spots, and the (^ differs in the palpi, and the J in venation and absence of lateral 

 spots. From Runchomyia frontosa it differs in the much shorter proboscis. 



We are unacquainted with the above except by description; but it appears 

 extremely probable that the male and female described as sexes of one species are 

 really not conspecific. ]\Ioreover, the male may be really a female, in which case, 

 as the genus is based on the supposed male, the characters would prove very 

 similar to those of Lesticocampa. Therefore, suspecting that Goeldia might 

 possibly prove an earlier name for Lesticocampa, we applied to Mr. F. W. 



