CULEX CORNIGEE 241 



right forked scales in the middle and dark ones at the sides, showing as two indistinct 

 dark lateral patches, the scales around the eyes and at the sides very much paler 

 than those on the occiput; clypeus, palpi and antennae hlack; proboscis deep brown 

 basally, black towards the apex, with an indistinct pale band on the apical half. 



Thorax deep brown, with narrow-curved brown scales, chestnut-brown in some 

 lights, almost bronzy in others, the sides of the mesonotum with a broad hand of 

 pale creamy scales, from which springs on each side an inwardly projecting branch 

 half across the mesonotum about its middle; in front of the scutellum are a few 

 grey scales, and on the mid lobe of the scutellum a prominent patch of the same, 

 border-bristles long, rich brown, eleven to the mid lobe; metanotum deep brown; 

 pleurae paler brown, with a patch of grey scales. 



Abdomen black, with basal creamy curved patches scarcely forming complete 

 bands, small basal lateral white spots, which are very prominent on the penultimate 

 segment; on the venter the abdomen has broad basal creamy bands; posterior border- 

 bristles pale, shortest in the middle of each segment. Legs deep brown to almost 

 black, apices of the femora and tibiae pale, the metatarsi and tarsi with apical and 

 basal pale bands, very indistinct on the fore legs, distinct and broader on the hind 

 legs, except the last tarsal joint, which scarcely shows any banding; ungues small, 

 equal and simple. 



Wings with typical brown Culex scales; first sub-marginal cell longer and nar- 

 rower than the second posterior cell, its base considerably nearer base of the wing 

 than of the latter; stem of the first sub-marginal very short, almost as short as In 

 C. pipiens, stem of the second posterior about two-thirds the length of the cell; pos- 

 terior cross-vein a little more than its own length distant from the mid-cross vein; 

 third long vein, also the fifth and sixth and basal portion of the fourth, second and 

 all the costal darker scaled than the rest. Halteres with almost white stem and pale 

 ochraceous knob. 



Length. — 5.5 mm. 



(J. Palpi deep brown, with yellow bands; abdomen with basal white bands; 

 ungues of the fore and mid legs unequal, uniserrated, hind equal and simple. 



Length. — 5.5 mm. 



Locality. — Para, Brazil (Prof. Goeldi) ; Rio de Janeiro (Lutz). 



Time of capture. — 30. 8. 02 (Dr. Lutz). 



O'bservations. — Described from two females and a male collected by Prof. Goeldi. 

 It can at once be told by the thoracic ornamentation. 



There is another female and three males which show no thoracic ornamentation 

 with a hand lens and which would be mistaken for G. cingulatus, F., but careful ex- 

 amination with the microscope shows traces of the ornamentation and also the large 

 number of mid scutellar chaetse. 



Dr. Lutz has also sent me a male and female which he bred, and pointed out at 

 the same time their resemblance to C cingulatus. 

 Obiqiitai, Descbiption of CtTLEX lactatob: 



With the characters given in the table; a very distinct form. The larva contra- 

 dicts both the characters which usually define the species of Culex, but we neverthe- 

 less believe that it belongs here. The anal segment has the normal structure of all 

 the Culex species. 



The larvae were taken by the junior author in puddles at Cordoba, Santa Lucrecla, 

 Rincon Antonio, Tehuantapec, and Almoloya, Mexico; Puntarenas and San Jos€, 

 Costa Rica. The adults were named " Culex f secutor Theob." and mixed with 

 another species (C coronator D. & K.) under this name. Compare our remarks 

 under Culex secutor and Janthinosoma scholasticus. 



The following is an abstract of the table : 



1. Antennae with the tuft at the middle of the uniformly shaped joint 2 



2. Air tube only about two-and-a-half times as long as wide 4 



4. Ring of anal segment broad; pecten over half of tube; two tufts within, two 



beyond not in line, two on dorsal aspect lactator 



OBiaiNAi, Descbiption of Culex hassaedu: 



$. Head grayish, with narrow curved pale golden scales and hairs clustered 

 thickly on the occiput and between the eyes, upright forked scales on the nape, sides 

 of the head black, eyes bordered with bright white scales; antennae, palpi and clypeus 

 black; proboscis black, penultimate quarter of its length banded with yellow scales; 

 apex yellow. Thorax grayish, clothed with numerous elongated spindle-shaped black 

 and white scales; white scales collected in two conspicuous white spots near the 

 centre, and a broad area near the scutellum, also in patches along the borders of 

 the mesothorax, a number of long black hairs especially abundant about the origin 

 16 



