INSECUTOR INSCITI^ MENSTRUUS 153 



Dr. and Mrs. Bonne remark that the hypopygium of 

 Walker's type of terrens differs from oswaldi by the presence 

 in the latter of a long subapical seta on the claspette. This 

 is figured in the monograph (1912) and described by me 

 (1918), but proves to be an artifact, not shown in fresh 

 mounts from the same locality. The above synonymy there- 

 fore seems indicated. 



The species appears to have a wide distribution, including 

 Brazil, Trinidad, the Guianas, Panama and Mexico. Some 

 uncertainty exists as to the identifications, since both sexes 

 are not always represented from the same locality. 

 Both sexes with the mcsonotum silvered across in front. 



Aedes (Finlaya) thorntoni Dyar & Knab. 



Aedes thorntoni Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 10, 



1907. 

 Aedes insolita Busck (not Coquillett), Smith. Misc. Colls., quart. 



iss.. Hi, 64, 1908. 

 Aedes thorntoni Theobald, Mon. Culic, v, 485, 1910. 

 Aedes thorntoni Howard, Dyar & Knab, Mosq. No. & Cent. Am. 



& W. I., ii, pi. 33, fig. 217, 1912. 

 Aedes thorntoni Howard, Dyar & Knab, Mosq. No. & Cent. Am. 



& W. I., iv, 819, 1917. 

 Aedes (Gualteria) thorntoni Dyar, Ins. Ins. Mens., vi, 45, 1918. 



The original types contain only females ; but the silvering 

 of the mesonotum extends entirely across, which character 

 fixes the species. Specimens are before me from Nicaragua 

 and Panama. 



Male with the mesonotum silvered across, the female unknown. 

 Aedes (Finlaya) argyrothorax Bonne-Wepster & Bonne. 



Aedes argyrothorax Bonne-Wepster & Bonne, Ins. Ins. Mens., 

 vii, 179, 1920. 



The female, unfortunately, has not been made known ; but 

 the species cannot be mistaken on account of the peculiarities 

 of the male hypopygium, the claspette filament being expanded 

 and ribbed, unlike the usual filiform type. 



