920 MOSQUITOES OF NOKTH AMERICA 



tion consists of apical triangular median white patches, not bands, as in V. pul- 

 cherrima. To these differences I must add the following: (1) there is no median 

 blue thoracic line, but a blue median spot towards the scutellum; (ii) the dark 

 thoracic scales have a golden border when seen under the microscope, whilst In 

 V. pulcherrima they are all deep bronzy-brown, like saphirina; (ill) the first sub- 

 marginal cell is relatively much smaller than in V. pulcherrima; (iv) the basal 

 blue-scaled line of the wings is present only on the root of the fifth vein, whilst in 

 U. pulcherrima it Is on both the fourth and fifth veins; (v) lastly, I can detect no 

 upright forked scales on the head of V. geometrica. 



I have not seen a d. Dr. Lutz says they breed with Anopheles, and the larvae 

 are much like those of that genus, but have a short respiratory tube, and lie 

 obliquely in the water. They sting severely in the daytime, but do not seem very 

 inclined to do so. They may also be found in the grass near the places where they 

 breed. 



Desceiption of Female, Mam;, and Labva of TJeanot^nia geometbica: 



Female. — Proboscis long, slender at base, much expanded toward apex, 

 labellae large; vestiture of black scales with a brownish tint; cilia numerous, 

 particularly towards apex where they are longer. Palpi very short, rather 

 stout, clavate; vestiture of blackish scales; setse numerous, stiff, black and dense 

 apically. Antennas filiform, long and slender, the joints subequal, dark brown, 

 with coarse and rather sparse ciliation, more dense on last two joints ; second 

 joint slightly longer than the succeeding one and broadly pale at base ; hairs of 

 whorls long and sparse; tori globose, rather small, ocher-yellow. Clypeus 

 rather small, prominent, roundedly triangular, constricted at base, nude, dark 

 brown, shining. Occiput covered with broad appressed dark iridescent scales, 

 light metallic blue in a large vertical spot between the eyes and another 

 laterally at ocular margins; bristles along margins of eyes moderate, black, a 

 pair projecting forward between eyes. 



Prothoracic lobes prominent, well separated, covered with small, broad, 

 metallic bright blue scales and with a few black bristles. Mesonotum dull 

 yellowish brown anteriorly, becoming didl brown on posterior half; vestiture 

 of rather dense, small, curved, light bronzy brown scales, some black hair-like 

 ones intermixed, a pair of submedian longitudinal bare lines extending from 

 anterior margin to near antescutellar space, a small spot of metallic blue scales 

 in front of antescutellar space; a broad line of metallic blue scales at lateral 

 margins from base of wings to near middle of sides; bristles coarse and long, 

 light brown with a slight golden luster. Scutellum with the central lobe large, 

 broadly rounded, each lobe with a group of coarse brown bristles; scales on 

 lateral lobes small, black, a large patch of blue ones on middle lobe. Postnotum 

 large, deep ocherous, with a slight dark median ridge, smooth, nude. Pleurae 

 pale yellowish-brown, a darker spot bearing a patch of small pale metallic blue 

 scales in the middle ; coxae luteous. 



Abdomen straight-sided, dorsaUy flattened, truncate at tip ; dorsal vestiture 

 of black scales, in parts with brown, bright green and dark blue luster; a series 

 of median, segmental, apical triangular white patches, absent on first segment, 

 small on second, large and transverse on the following ones ; sides with a series 

 of silvery-white triangular apical segmental patches, with a slight bluish luster; 

 venter clothed with dull white scales ; tip of abdomen with many coarse brown 

 bristles. 



Winp rather narrow, hyaline; second vein closely approximate to first; 

 second marginal cell very short, about one-third the length of its petiole ; second 

 posterior cell slightly longer, but much less than its petiole in length; basal 

 cross-vein upright, distant about its own length from anterior cross-vein; 

 scales of veins small, dark brown, with a green reflection along costa ; extreme 

 apex paler and also the fringe; a row of large broadly lanceolate outstanding 

 pale scales along lower branch of second vein, outer two-thirds of third vein 



