384 MOSQUITOES OF NORTH AMERICA 



times as long as Ydde; pecten running to basal third, followed by a row of five 

 multiple hair-tufts along posterior edge of tube and two slight dorsal ones; 

 single pecten-tooth a short broad spine with three basal branches. Lateral comb 

 of eighth segment of a single irregular row of scales; single scale elongate, 

 tapering to a sharp point, fringed except subapically with sparse slender 

 spinules. Anal segment longer than wide, ringed by the plate ; dorsal tuft two 

 long hairs and a shorter one on each side; a single lateral hair; ventral brush 

 well developed, confined to the barred area. Anal gills small, much shorter than 

 the segment tapered to a rounded tip. 



The larvae live in ground-pools, but we have no notes on their habits. Our 

 figure (plate 147, fig. 689) of the eggs was made by Miss E. G. Mitchell, and 

 represents them deposited in a long, narrow raft. 



Southern Mississippi Valley. 



Baton Eouge, Louisiana (J. W. Dupree) ; Brownsville, Texas, August 6, 1904 

 (H. S. Barber) ; Tutwiler, Mississippi, August 2 (H. S. Barber) ; Fort Smith, 

 Arkansas, July 7, 1904 (H. S. Barber) ; Littie Eock, Arkansas, July 2, 1904 

 (H. S. Barber) ; Eives, Tennessee, July 27, 1904 (H. S. Barber) ; Victoria, 

 Texas, July 28, 1904 (E. G. ffinds) ; Jacksonville, Florida, October 12, 1908 

 (H.Byrd). 



This species was originally identified as Culex atrattis, but it is in fact distinct 

 from that Jamaican species. We have lately received captured adults from 

 Florida, but must await the receipt of their larvae for positive determination of 

 the species in that locality. 



CITLEX AGITATOR Dyar & Enab. 



Culex humilis Pazos (not Theobald), Bull. Soc. ent France, 134, 1904. 

 MocMostyrax cubensis Dyar & Knab (not Culex cubensis Bigot) , Joum. N. Y. Ent 



Soc., xiY, 223, 225, 1906. 

 Culex agitator Dyar & Knab, Journ. N. Y. Ent Soc, xv, 100, 1907. 

 Culex agitator Pazos, Anal. Acad. Cien. in€d. fis. y nat de la Habana, xIt, 425, 1908. 

 Culex agitator Pazos, San. y Ben., li, 49, 559, 1909. 

 Culex agitator Theobald, Mon. Cullc, v, 614, 1910. 



Obiohtai. DESCBn^noN of Mochlostybax cubeksis: 



The specimens are badly damaged, but enough is left to give the specific characters. 

 The tube is of the same shape as in eauAelli and had apparently similar hair tufts. 

 Pecten very long, not reaching half way along the tube. Lateral comb of the eighth 

 segment of eight bars, stout, well separated, the upper ones smaller. 



We have the specimens from Havana, Cuba, from Mr. John R. Taylor as " Melano- 

 conion atratus Theob." the determination made by Mr. Coquillett, we believe. 



The following is an abstract of the table : 



1. Antennae with the tuft from a notch beyond the middle 2 



2. Air tube not over four times as long as wide, stout at base and taper- 



ing, slightly curved forward with two stout hooks at tip . . . 4 



4. Bars of comb in a straight row; body glabrous 5 



5. Comb of only eight bars cubensis 



Obiginal Descbeption of Cttlex AGrrATOB: 



We propose this name to replace MocMostyrax cubensis Dyar & Knab, since when 

 this species is transferred to Culex, as will follow from MocMostyrax not being 

 separable from Culex in the adult state, it is preoccupied by Culex cubensis Bigot 



DESCEIPTION of FEMAI.E, MALE, AND LiABVA OF CULES AOrTATOB: 



Female. — Proboscis moderate, slightly expanded at tip, vestiture black with 

 bronzy luster, labellae conically tapered, paler; setae minute, curved, black, those 

 on labellae more prominently outstanding. Palpi short, about one-fifth as long 

 as proboscis, uniform, dark brown, a few outstanding hairs at base. Antennae 

 moderate; joints subequal, rugose, pilose, black, second joint slightly longer 

 than third; tori subspherical, with a cup-shaped apical excavation, biown 



