8 A Monograph of Culieidae. 
in the ¢ than in the 92, the apices being clubbed. We also find 
the scale structure of Theobaldia different. lf we adopt the 
palpal jointing, we can split the genus Culex (in the restricted 
sense) up into a great number of genera, most with only a single 
representative ; for this reason I only look upon the form of 
the palpi as of specific importance. 
If the body of a mammal, say a horse, were clothed with 
flattened hairs of considerable breadth, we should not place that 
mammal in the genus Hquus, but in a distinct genus. The same 
applies to the Culicidae, and hence scales are taken as generic 
characters, more so on account of the scaly nature of the Culicidae 
being one of the most important characters of the family. 
M. Neveu-Lemaire’s classification is here appended :— 
I. Anophelinae.—Maxillary palps as long as the proboscis in both 
sexes ; first sub-marginal cell equal to or longer than the second posterior 
cell; proboscis straight; maxillary palps with three joints in the g; 
four in the ?. (3. genera.) 
Scales of the wings lanceolate ............... Anopheles, Meigen. 
Scales of the wings long and narrow...... Myzomyia, Blanchard. 
Scales of the wings large and expanded... Cyclolepidopteron, Theobald. 
Il. Megarhininae.—Maxillary palpi as long as the proboscis in the ¢ ; 
as long or much shorter than the proboscis in the @¢ ; first sub-marginal 
cell smaller than the second posterior cell; proboscis re-curved; maxillary 
palpi of the g 5-jointed. (2. genera.) 
Palpi of the ¢ as long as the proboscis, 
an GiO=jOUNbedF Oa ices. . ds ecto enc tee eens Megarhinus, Rob.-Desvoidy. 
Palpi of the @ much shorter than the 
PEODOSCIS > .S-[OMLGC. .pac.cossa aca ao aeae Toxorhynchites, Theobald. 
Til. Culicinae.—Maxillary palpi as long or longer than the proboscis 
in the ¢ ; always shorter than the proboscis in the @¢ ; first sub-marginal 
cell equal to or longer than the second posterior cell. 
PRGbDOsciIsS Curved In these’ 4.44.0 68s ah es eee Psorophora, 
Rob.-Desvoidy, 
5 {Third palpal joint as long or 
o+} Palpi3-jointed) longer than the other two Culex, Linné, 
in the 9. . } The 3 joints of equal length Stegomyia, 
Theobald. 
(Palpi less than 4rd the 
| length of the proboscis ... Theobaldia, 
Neveu-Lemaire, 
Palpi 4-jointed | Palpi more than 4rd the 
in the ?.f 4 length of the proboscis; 
| scales of the wings ex- 
p< panded "c..2a eee SR Mansonia, 
\ 
Posterior cross-vein nearer the 
base of the wing than the middle 
CcYross-vein, 
Proboscis straight in the 
Blanchard. 
Palpi.5-joimted 1alGhe! Oca eee. 5e eens nc en ceeeeere Taeniorhynchus, 
\ Arribalzaga. 
* Megarhinus violaceus (= purpureus, Theobald) has only 4-jointed 
palpi.—F. V. T. 
+ Culex vittiger.—Skuse has 4-jointed palpi, but cannot come in either 
of these genera, being quite distinct. 
