Di/ar and Knob Some American Mosquitoes. 167 



Haemagogus regalis sp. nov. 



Proboscis long, black; head and thorax brilliant metallic blue and 

 green ; pleurae silvery ; abdomen dark blue with silvery bands on all the 

 segments above, broader below. Legs blue-black, the mid and hind femora 

 white below towards base. Base of the first submarginal cell slightly nearer 

 the base of wing than base of the second posterior cell. 



22 specimens, Sonsonate, Salvador (F. Knab), San Juan, Trinidad (F. W. 

 Urich), Cacao, Trece Aguas, Alta Vera Paz, Guatemala (Schwarz & Barber), 

 Livingstone, Guatemala (H. S. Barber). 

 Type. Cat. No. 10,024, U. S. Nat. Mus. 



The larva was confused by us with that of splendens AVilliston (cyaneus 

 Theobald, not Fabricius). The table (Journ. N. Y. Ent. Soc., xiv, 191, 1906) 

 should be corrected under dichotomy 43 by striking out " short abdominal 

 hairs stellate" and for "cyaneus" read "45." Add a new dichotomy, 45, as 

 follows : 



45. Pecten reaching over half of tube, of about 18 teeth ; second 

 ary abdominal hairs not stellate regalis 



Pecten not reaching half of tube, of about 12 teeth ; dorsal 



abdominal hairs stellate, long splendens 



Haemagogus fulvithorax Lutz. 



Haemagogus fulvitliorax Lutz in Bourroul, Mosq. do Brasil, p. 4 of Key to 

 Euculicidae, 1904. 



Gualteria fulvithorax Lutz in Bourroul, Mosq. do. Brasil, p. 13 of Cat. of 

 species, 1904. 



Gualteria fulvithorax Lutz, Imprensa Medica (Sp. No. VII), 1905 ? 



Taeniorhynchus palliatus Coquillett, Can. Ent., xxxviii, 61, 1906. 



Mr. Urich has discovered the larva of this elegant species and sent us 

 several larval skins from Trinidad. The species, by the thoracic orna 

 mentation of the adult, is like Aedes knabi Coquillett (Calex knabi Coquil 

 lett, Proc. Ent. Soc. Wash., vii, 133, 1906). That Mr. Coquillett should de 

 scribe the species in Taeniorhynchus while Dr. Lutz places it in Haemagogus, 

 shows the futility of the scale characters as a means of generic separation. 

 The larva falls in our table of Aedes under the dichotomy 43, and would go 

 into 44 (with knabi, insolila, and podograpldcus] but that the secondary ab 

 dominal hairs are coarse and stellate. It has the air tube short, 2x1, strongly 

 tapered on outer half, the pecten of 13 densely placed teeth, the outer ones 

 long, blunt, followed by a long, 4-haired tuft. The larvae were taken from 

 a hollow tree, and were forwarded to Mr. Urich by Dr. J. R. Dickson. 

 We congratulate Mr. Urich and Dr. Dickson on this interesting discovery. 



Haemagogus aureostriata Grabham. 



Howardina aureostriaia Grabham, Can. Ent., xxxviii, 171, 1906. 



Dr. Grabham has sent us these curious larvae. They fall in our table in 

 Aedes, but separate at the dichotomy 18 on the length of the air tube, it 

 being over four times as long as wide in aureostriata and three times or 

 less in the other species. The comb scales are very peculiar, being in a 

 long, straight row, much as in the genus Mochlostyrax. 



