824 MOSQUITOES OF NORTH AMERICA 



comb of eighth segment of six scales in a curved row ; single scale elliptical, with 

 three apical teeth, the central one about as long as body of scale, the others 

 about half as long. Anal segment as long as wide, with a dorsal plate which 

 tapers behind and is fringed by a row of long spines ; dorsal tufts of two pairs 

 of brushes; a lateral tuft of five long hairs at posterior angle of plate; ventral 

 brush well developed, with a small triangular plate on either side; anal gills 

 short, tapered, not as long as segment, the lower pair a little shorter than upper. 



Pupa (plate 150, fig. 710). Thoracic mass subpyriform, with a few scattered 

 hairs on dorsum ; air-tubes slender, narrowly funnel-shaped, the tips obliquely 

 truncate; abdomen elongate, slender, the segments expanded posteriorly; hairs 

 slight, the lateral tufts of the eighth segment long, but of few hairs; anal 

 paddles with single very long terminal hairs. 



The larvffi live in the water in holes in trees and also in artificial receptacles, 

 more especially if made of wood. Mr. John E. Taylor obtained eggs and writes 

 us as follows : 



" The eggs are cylindrical in shape, with conical extremities, being slightly 

 larger near one end than the other, although both ends possess about the same 

 degree of bluntness. They must darken very quickly, as we have not been able 

 to observe white eggs. The egg measures 0.72 mm. long and 0.17 mm. broad. 

 The cells appear to be regularly hexagonal in form. The eggs are deposited, 

 each egg on its side, either singly, in parallel rows of four or more eggs, or in 

 chain form. The eggs were deposited in a tin in which grass had been placed, 

 on the grass near to the water line." 



In nature the eggs are doubtless deposited near the water, upon the side of the 

 cavity or receptacle, as is the habit of all the tree-hole inhabiting Aedes with 

 which we are acquainted. There are probably a number of broods during the 

 year, but, owing to the more permanent character of the water inhabited by the 

 larvae, these are not differentiated. 



Greater Antilles. 



San Francisco Mountains, Santo Domingo, September, 1905 (A. Busck) ; 

 Mayaguez, Porto Eico (W. V. Tower) ; Kingston, Jamaica (M. Grabham) ; 

 Santiago, Cuba, August (through C. S. Ludlow) ; San Antonio de los Banos, 

 Cuba (J. H. Pazos). 



Dr. Grabham has described specimens from Jamaica as a distinct species, 

 under the name uncatus, in which the comb-scales of the eighth abdominal seg- 

 ment of the larva end in a single long thorn instead of being trifid. We think, 

 after studying the forms from several islands, that this distinction, although 

 usually valid, is not specific in this case. The species varies slightly also as 

 adult, but there is no coordination between the variation of adult and larva, nor 

 any breaking up into separate species or races in the different islands, 



AEDES CALOPUS (Meigen) Dyar & Knab.* 



Culex fasciatus Fabricius (not Miiller; not Meigen), Syst. Antliat, 36, 1805. 



Culex calopus Meigen, Syst. beschr. bek. Eur. Zweifl. Ins., i, 3, 1818. 



Culex fasciatus Wiedemann (not Miiller), Dipt. Exot., 36, 39, 1821. 



Culex mosquito Robineau-Desvoidy, Mem. Soc. d'hist. nat. Paris, iii, 407, 1827. 



Culex calopus Robineau-Desvoidy, Mem. Soc. d'hist. nat. Paris, iii, 406, 1827. 



Culex fasciatus Robineau-Desvoidy (not Miiller), M6m. Soc. d'hist. nat. Paris, iii, 



408, 1827. 

 Culex frater Robineau-Desvoidy, Mem. Soc. d'hist. nat. Paris, iii, 408, 1827. 

 Culex fasciatus Wiedemann (not Miiller), Aussereurop. Zweifl. Ins., i, 8, 1828. 

 Culex twniatus Wiedemann, Ausser. Zweifl. Ins., i, 10, 1828. 



Culex mosquito Guerin et Percheron, Gen. des Ins., 2 Livr., No. 9, pi. ii, f. 1, 1835. 

 Culex kounoupi Brulle, Expd. sclent, de Moree, Zool., iii, 289, 1836. 



* The earnest name for this species is Culex argenteus (Poiret, Journ. de Physique, xxx, 245, 

 1787) and accordingly it will now have to be called Aiides argenteus. This discovery was made 

 too late to carry out the necessary changes throughout this work. 



