178 MOSQTJITOES OF NORTH AMERICA 



Fore legs all deep metallic purple, with bronzy reflections; mid legs with, the four 

 tarsi pure white, the last showing dark reflections; hind legs with the last two 

 tarsi only white; fore and mid ungues black, unequal, simple, the fore nearly 

 straight, the mid rather more curved, the hind very small, equal and simple. 



Wings with the cross-veins as in the ?, the brown scales showing a deep violet 

 tint in the light. 



Length. — 7.5 mm. 



HaMtat. — ^Trinidad (Urich). 



Time of capture. — ^December. 



Observations. — ^Described from several ?'s and a single c7- It is a very beautiful 

 mosquito, quite unlike any I have seen, and certainly forms a new genus. The 

 only variable characters seem to be in the last tarsal joint of the mid legs, which in 

 some specimens is white, in others grey, and in others almost brown. The majority 

 have the head scales showing brilliant mauve reflections, but in one they are mainly 

 dull ochraceous. 



Mr. Urich states in his letter that he has found the breeding-place of this handsome 

 species, but gives no details. 



They were taken at Aqua Santa, on a "Cocoa Estate" bordering on a forest 

 They are found in the cocoa groves, but do not come into the houses. 



Description of Femai,e, Mau:, and Labva of Joblotia digit atus: 



Female. — Proboscis moderate, rather long, unifonn, labellae conically tapered; 

 vestiture blue black, setae rather distinct, curved, black, those on labellae more 

 prominently outstanding. Palpi short, one-fifth as long as proboscis, stout, 

 blue black, with a group of projecting setae below. Antennae with the joints 

 subequal, the basal ones shorter, rugose, pilose, black, second joint luteous at the 

 base; tori subspherical, with a cup-shaped apical excavation, dark luteous, 

 brown within ; hairs of whorls long, rather dense. Clypeus flat, rounded, dark 

 brown, with a dense fringe of coarse hairs around margin and covering outer 

 third of upper surface. Eyes black. Occiput densely clothed with flat black 

 scales with a bright blue or silvery reflection, a row of setae along margins of eyes, 

 the lateral and vertical ones longer, a row of short, erect, forked black scales on 

 the nape posteriorly. 



Prothoracic lobes elliptical, remote dorsally, densely clothed with shining 

 silvery scales and a few black bristles. Mesonotum pale brown, darker in the 

 middle, clothed with rather broad, curved brownish-black scales, the anterior 

 angles clothed with broad, flat iridescent-violet scales, setae along sides and at 

 roots of wings dense, black, short. ScuteUum trilobate, clothed with broad, flat 

 black scales with a blue luster, each lobe with a tuft of black bristles. Postnotum 

 elliptical, prominent, brown, with a groove each side of the middle, the grooves 

 converging posteriorly, where there is a group of short black setae preceded by 

 a double elongate patch of small, flat iridescent scales. Pleurae and coxae luteous, 

 clothed with small elliptical, flat silvery scales and tufts of brown bristles. 



Abdomen subcylindrical, truncate at tip, dorsal vestiture black vrith green and 

 blue reflection, venter golden, with a white reflection, colors separated on sides 

 in an undulating line. First abdominal segment clothed above with flat black 

 scales, with a green reflection, and many fine pale hairs. 



Wings narrow, hyaline, iridescent; petiole of second marginal cell one-third 

 as long as its cell, that of second posterior shorter than its cell; cross-veins 

 incident; scales of veins brown, with a blue reflection on costa, large, dense, 

 overlapping, broadly elliptical, some of them obliquely subtruncate. Halteres 

 black, except at the base. 



Legs long and slender, the scales, especially of the posterior tibiae, rough and 

 somewhat outstanding, black, with a strong violet and blue reflection ; posterior 

 tibiae and first tarsal joint white at base; mid legs with the four terminal tarsal 

 joints white, the last one with blackish tip ; hind legs with the last two tarsal 

 joints white and a very little white at tip of third joint. Claw formula. 

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