Genus Uranotaenia. 
219 
supernumerary and mid cross-veins close to the base of the vein, 
but not nearly so close as in the former species; posterior cross¬ 
vein not quite its own length distant from the mid cross-vein. 
Halteres with a deep ochraceous stem and fuscous knob. 
Length .—2 * 5 mm. 
Habitat. —Cubatao, near Santos, Brazil (Dr. Lutz). 
Observations. —Dr. Lutz sends me an Uranotaenia, which he 
points out as differing from U. pulcherrima of Arribalzaga, and 
which he names geometrica. After carefully studying the two 
specimens sent and comparing them with U. pulcherrima, I feel 
convinced that Dr. Lutz is correct, although it is closely related 
to Arribalzaga’s species. Dr. Lutz pointed out to me that the 
abdominal ornamentation differs, and also that the leg banding 
differs, the two last tarsal joints of the hind legs being pure 
white, whilst in pulcherrima the last only is white, the abdominal 
ornamentation consists of apical triangular median white patches, 
not bands, as in U. pulcherrima (Big. 272, YI. and VII.). To 
these differences I must add the following : (i) 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 U. pulcherrima they 
are all deep bronzy-brown, like saphirina (Fig. 272, I., n, and 
III., m); (iii) the first sub-marginal cell is relatively much smaller 
than in U. 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 U. geometrica. 
I have not seen a . 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. 
3. Uranotaenia saphirina. Osten-Sacken. 
Aedes saphirinus. Osten-Sacken. 
(Trans. Ent. Soc. Ameri. vol. ii. p. 47.) 
Thorax tawny-brown, paler on the pleurae, with a metallic 
blue median mesothoracic line reaching the scutellum, a pale blue 
line in front of the wings, and two blue spots on the pleurae. 
