160 INS^CUTOR INSCITI^ MENSTRUUS 



Culex mathisi Surcouf & Gonzales-Rincones, Essai Dipt. Vul. 



Venez., 176, 1911. 

 A'edes (Heteronycha) mathis-i Dyar, Ins. Ins. Mens., viii, 105, 1920. 



Described from French Guiana from a female, the male 

 being unknown. According to the description, the mesonotum 

 is yellow, marked with brown lines, and with an area of curved 

 scales in the middle. 



Aedes (Ochlerotatus) knabi Coquillett. 



Culex knabi Coquillett, Proc. Ent. Soc. Wash., vii, 183, 1906. 

 Aedes knabi Dyar & Knab, Journ. N. Y. Ent. Soc, xiv, 203, 1906, 

 Aedes knabi Dyar, Proc. Ent. Soc. Wash., viii, 16, 1906. 

 Ochlerotahis knabi Coquillett, U. S. Dept. Agr., Bur. Ent., Tech. 



Ser. 11, 18, 1906. 

 Culex knabi Theobald, Mon. Culic, v, 612, 1910. 

 A'edes knabi Howard, Dyar & Knab, Mosq. No. & Cent. Am. & 



W. I., iv, 841, 1917. 

 Aedes ( ?GuaIter'ia) knabi Dyar, Ins. Ins. Mens., vi, 73, 1918. 



No male is yet known. The species resembles mathisi and 

 hortator, and will presumably be found to belong in this group. 



Aedes (Ochlerotatus) hortator Dyar & Knab. 



Aedes hortator Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 12, 1907. 



A'edes hortator Theobald, Mon. Culic, v, 485, 1910. 



A'edes hortator Howard, Dyar & Knab, Mosq. No. & Cent. Am. & 



W. I., iv, 843, 1917. 

 A'edes ( ?Gualteria) hortator Dyar, Ins. Ins. Mens., vi, 73, 1918. 

 Aedes (Heteronycha) hortator Dyar, Ins. Ins. Mens., viii, 105, 1920. 



Described from Trinidad from two females. Dr. and Mrs. 

 Bonne have bred the species in Surinam and kindly presented 

 two males to the National Museum. 



Aedes (Ochlerotatus) hastatus, new species. 



Male. Head and mesonotum entirely covered with silvery 

 scales. Abdomen black dorsally, with large triangular lateral 

 segmental white spots. Legs dark, as the wing-scales. 



Hypopygium. Side piece about three times as long as wide ; 

 apical lobe long and slender, bare, except for a single coarse 

 seta at tip; basal lobe bulbous, moderate, with many setae on 

 the outer aspect, the spine moderate, adjacent to the basal edge 



