1905] 
S.]/J 7 '// AA^n G/eOSSBACA'— A/OS( 2 ['/TO LAB 
7 
The anal siphon is pale yellow in color, slightly darker near the tip, very 
long, being about live times as long as its width at the base and evenly 
tapered toward the apex. The spines, from 15 to 22 in each row, extend almost 
to the middle: they vary in size and in the number and length of the teeth; the 
short ones always toward the base; the apical two separated from the rest and 
from each other. The siphonal tufts at the end of the rows have but three or 
four long hairs. The ninth segment is slightly longer than broad with the usual 
dorsal and ventral tufts, the latter with several small tufts below the barred area. 
The anal gills are stout and moderate in length without visible trache.Ts. 'I'he 
larva differs obviously from that of cantans in the antennal structure, in the form 
and arrangement of the scales on the eighth segment and in the form and arma- 
ture of the anal siphon. 
Culex preians Grossbeck. 
The connection between the larva here described and the adult is not posi- 
tively made, but there seems little doubt as to the correctness of the association. 
mixture of full grown larvm and pupae was collected from woodland pools in 
the Great Piece .Meadows, May 10, 1904. The larvm were put in alcohol and the 
pupae left to develop. On .May 12, i and i 9 Culex pre'ans, together with spec- 
imens of laiiadeiisis and sylvestris emerged from the pupae. The alcoholic larvae 
were examined at once and were found to be lanaiensis, sylvestris, Aedes fusats 
and four larva; which were new to us, and as we had the larvae of all other New 
Jersey species thus far known, excepting perturbans, we thought it quite safe to 
associate them with pretaus. 
The larvae are from 5.5-6mm. in length to the end of the ninth segment 
and are pale to dark gray in color. The head is one and one half times as broad 
as long, yellowish, with a large brown blotch in the anterior part of the vertex, 
similar to C. sylvestris. There are four hair tufts of 4 or 5 hairs each in the 
center of the vertex and a larger one at the base of each antenna. The antenna 
is rather short, slightly curved, pale yellow in color, faintly infuscated apically, 
thickest a short distance from the base and has the surface sparsely set with 
stout spines and numerous small ones arranged in longitudinal rows. The tuft is 
situated well below the middle and consists of 8 or 10 hairs which do not reach 
the apex; the apex with one long spine, several smaller ones and a small joint. 
The rotary mouth brushes are dense, with the hairs of the central part pecti- 
nated. The mentum is triangular in form, with 15 to 17 small teeth on each side 
of the apex. The mandible and maxillary palpus are normal, the latter with a 
moderate apical tuft and stout basal joint. 
The thorax is very much broader than long, with angulated sides, each angle 
