170 Dyar and Knob Some American Mosquitoes. 



the bases of the joints; antennae black. Thorax golden brown, with pale 

 longitudinal striation, under a higher power with sparse golden scales and 

 coarse black setae, two whitish dorsal impressed lines and an oblique one 

 on the pleura before the wing insertion. Abdomen black with distinct 

 white basal bands ; thorax below greenish ; legs black, femora pale below ; 

 all the tarsi with narrow white basal rings. 

 Type. Cat. No. 10,019, U. S. Nat. Mus. 



Culex imitator Theobald. 



Culex imitator Theobald, Mon. Culic., iii, 175, 1903. 



Culex daumsaturus Dyar & Knab, Journ. N. Y. Ent. Soc. xiv, 220, 1906. 



Culex vector Dyar & Knab, Journ. N. Y. Ent. Soc., xiv, 220, 1906. 



A series of isolations from Mr. Urich indicates the above synonymy. In 

 studying the larvae alone, we had no idea that the larvae with the swell 

 ing in the tube could be conspecific with those lacking it (compare our 

 figures 52 and 53), but such seems to be the case. We had before us but 

 one specimen of vector and two of daumasturus. Mr. Urich has recently 

 sent us four isolations which show a straight tube in two, a barely percepti 

 ble indication of a swelling in one and a small swelling in another, placed 

 more basally than in our figure 52. The adults are all alike, and agree with 

 Theobald's description of imitator and with specimens from Brazil, which 

 have been kindly sent by Dr. Lutz. Mr. Urich got the larvae in Bromelia 

 water at Arima and Williamsville, Trinidad. 



We are pleased to be able to restore Mr. Coquillett's determinations in at 

 least one case (see our remarks, Journ. N. Y. Ent. Soc., xiv, 220 and 221). 



Culex lactator Dyar & Knab. 



Culex lactator Dyar & Knab, Journ. N. Y. Ent. Soc., xiv, 209, 1906 

 (March). 



Culex hassardii Grabham, Can. Ent., xxxviii, 167, 1906 (May). 



We have examined larvae and adults sent by Dr. Grabham from Jamaica 

 and find them conspecific with ours from Mexico and Costa Rica. 



Culex bastagarius sp. nov. 



Very close to C. mutator, Dyar & Knab, described from Cordoba, Mexico. 

 The larvae differ slightly. In mutator the whole body is densely hairy, 

 the upper head tuft is of three rather long hairs and two of the apical an- 

 tennal spines are well removed from the tip (Journ. N. Y. Ent. Soc., xiv, 

 pi. x, fig. 42, 1906) ; in bastagarius the thorax only is hairy, the abdomen 

 glabrous, the upper head tuft is of four hairs and very small, the four an- 

 tennal spines are close together at apex. 



The adults simulator were named " Melanoconion humilis Theobald " by 

 Mr. Coquillett. Culex humilis Theobald (Mon. Culic., ii, 336, 1901), was 

 described from Sao Paulo, Brazil. We have seen neither adults nor larvae 

 from Brazil, and, though Theobald's description, as far as it goes, applies 

 to our specimens, the occurrence of closely allied forms in Mexico and 

 Trinidad, prevent us from accepting the name for the form before us. 



C. mutator and C. bastagarius are practically identical in markings (and 

 agree with Theobald's description of humilis), but in mutator the upper 



