238 MOSQUITOES 



5. Abdoinen uiarketl with a cross-hand of whitish scales at 



base of each segment impiyer Walk. 



6. Abdomen never marked in this manner, but with a cluster 



of whitish scales at front angles of some of the seg- 

 ments trist'iiatu.s Say. 



7. Proboscis marked with a distinct whitish ring near the 



middle, feet white at sutures of the joints K 



Proboscis destitute of a whitish ring near the middle !• 



8. Tarsal joints white at bases only perturbaiis Walk. 



Tarsal joints white at both ends tarsalis Coq. 



9. Feet white at bases of joints excrucians Walk. 



Feet never white at bases of the joints 10 



10. Petiole of first submarginal cell about one-eighth the 



length of that cell . . pijj/>iis Linne. 



Petiole one-fourth the length of that cell. . . pntigt^iis Wied. 

 Petiole at least almost half the length of that cell. 



connobrtHUs Desv. 



{h) UNRECOGNIZED SPECIES. 



annnUiiun Schrank. This European species was credited to 

 our fauna by Osten Sacken. 



ho.scii Desv. Probably a rubbed specimen of pniif/eiis. 



ni(jripes Zett. Black, the legs of the male dark yellow, hairs 

 of pleura of female gray, a band of w'hite scales at base of each 

 segment of her abdomen. 



rubidn.s Desv. The description was apparently founded on a 

 rubbed specimen of P.soruphorti culf'ata. 



tentaceus v. d. Wulp. Must closely resemble ronsobiiitus. 



iiicidi'Hs Thomson. Is evidently a synonym of impiger 

 Walker. 



higofi Hcllardi. According to the figure and description, the 

 bands of black scales are at the bases of the al)dominal seg- 

 ments; in the recognized species these l)ands are always at the 

 apices of the segments. In other resi»ects this species must greatly 

 resemble pnii'p'us. 



cubeusis Bigot. Apparently founded on a badly rubbed speci- 

 men of puuyens. 



