DYAR-KNAB] MOSQUITOES IN GENUS MEGARHINUS 247 
the female marked with white. However the structure of the 
female palpi at once separates this form from those considered here, 
a structure which Dr. Lutz has considered of generic value. Wiede- 
mann’s violaceus” was based on a male specimen from Bahia and was 
without any trace of white on the tarsi, as he expressly states. Of 
course it is quite likely that the sexes differ in this respect but it 
should be noted that Theobald’s scanty material, all females, came 
from widely separated localities (Amazon, Sao Paulo, Santos, Rio 
de Janeiro), which, with the discrepancy in his remarks about the 
tarsi, arouses suspicion. At all events the species is to be excluded 
from the West Indian faunal region as the record® is based on a 
misidentified specimen from Trinidad which appears here under a 
new name. 
Below we tabulate the species of Megarhinus, giving the diag- 
nosis for the males and females separately. Although but seven 
species are before us we have included, as far as possible, the de- 
scribed species. We omit the forms treated under feroxr by Wiede- 
mann and Theobald, of which our knowledge is too unsatisfactory. 
Two other species, M. marie Bourroul and M. solstitialis Lutz are 
described in Bourroul’s Mosquitos do Brasil, which we have not 
seen. 
TABLE OF SPECIES 
Males 
Pe MtMen Without \CONSPICHOIMS, TLETS . ¢. daw cisieescivic ove. a0 oa ele.p and ce Adie bine 4. 
Rew era NEE od OU RENT UILR Atel leer ae ctu paige eek mE arate vocain, divin BA's S's Guatsleta & 2 
2. Abdomen red-tufted on 7th segment only .................. superbus n. sp. 
Abdomen red-tufted on 6th and 7th segments............ccccccccncnvcs 3. 
eet sSeeements 3. tad A Ediialis:. snc cas age eds ce ae et ealees hemorrhoidalis F. 
Ral. Aa Serene’ 1OM@er LNAI: ALM. c-<cie%.t:.c 4c eue cla wou os 50sec e lynchi n. n. 
Aroome “or allv ihe: tarsi witite-midtked si. ve ss calc ose iiceallac ode Wee vac 5 
howl without wiiten ss oflrs i's ss Grenade ses aie guadeloupensis n. sp. 
Per “tne Caran Nyhitte- tian REM Se oly gihitts at cieidisista vjecae octeberats lean © aatis rutila Coq. 
Middle and sind: tarsi witite-marked). <o/sj< ote es.de oe ees clei ae yee a acelele/s 6. 
Hind tarsi only white-marked...... haitiensis n. sp.; portoricensis v. Rod. 
Guacmosegiment only, of hind -tafsiswitite: swe sk eas, cues oss tain ac ce vale odes 7 
4th and 5th segments of hind tarsi white............... trinidadensis n. sp. 
7. Thorax with well-defined yellowish median and lateral stripes, 
, septentrionalis n. sp. 
SSI SSUEIDES.. DMI 5 vue) c.< sc tveacgiae’s chang tye erootonme 2 moctezuma n. sp. 
*Bourroul, Mosquitos do Brasil (1904). 
* Aussereurop. zweifliig. Insekten, v. 1, p. 3 (1828). 
3 Coquillett, Techn. Ser., No. 11, U. S. Dept. Agric., Bur. Ent., p. 14 (1906) ; 
Dyar and Knab, Journ. N. Y. Ent. Soc., xiv, p. 179 (1906). 
