AEDES EUPLOOAMUS 787 



disturbed numbers of these flies, when not one was to be seen ranging in the 

 surrounding bush." 



Dr. Grabham found the larvae in stagnant, algse-containing pools of perma- 

 nent water. The larval stages lasted about eight days, the pupal stage 36 to 48 

 hours. The insects generally emerged between 5 and 7 p. m. The adults appear 

 to be especially active during the afternoon and early evening. Dr. Goeldi also 

 found this to be a day-flying mosquito. He has observed and figured the eggs. 

 They are fusiform, more flattened on one side, black, granular, with an annular 

 colorless cushion at the micropyle. Dr. Goeldi says that the adults were noticed 

 in Pard mostly in the dry season, and that they frequent dry fields and gardens 

 where water is present in ditches or natural depressions. It loves the light, 

 and is most troublesome during the hottest hours vrith burning sun. 



Tropical America, including the Antilles. 



Vera Cruz, Mexico (D. L. Crawford) ; Frontera, State of Tabasco, Mexico, 

 February 19 (C. H. T. Townsend) ; Cordoba, Mexico, June 30, 1905 (F. 

 Knab) ; Santa Lucrecia, Mexico, June 23, 1905 (F. Knab) ; Georgetown, 

 British Guiana, June 1, 1906 (E. D. Rowland) ; Berbice, British Guiana (J. 

 Aiken) ; Guayaquil, Ecuador (F. Campos) ; Trinidad, June, 1905 (A. Busck) ; 

 San Antonio de los Banos, Cuba (J. H. Pazos) ; Cayamas, Cuba, May (E. A. 

 Schwarz) ; Santo Domingo, August, 1905 (A. Busck) ; Kingston, Jamaica 

 (M. Grabham) ; Sao Paulo, Brazil (A. Lutz). Reported also from Province of 

 Buenos Aires and Formosa, Chaco Territory, Argentine Republic (Lynch 

 Arribalzaga) ; Chile (Blanchard) ; Rio de Janeiro, State of Amazonas, State of 

 Para, Bahia, State of Minas Geraes, State of Matto Grosso, Brazil (Peryassu). 



This species has been referred to mostly under Arribdlzaga's name, but that of 

 Rondani is earlier, and clearly refers to this species. Dr. Grabham figured the 

 larvse from Jamaica, but so erroneously as to cause Dyar & Knab to propose 

 the name hemisurtis, under the impression that the larv'ae were not those of 

 scapularis. The name hemisurus must be cited as a synomym, while the char- 

 acters on which it was founded are fictitious. The name Aedes indolescens was 

 founded upon specimens from Cuba, under the supposition that they had no 

 lateral abdominal spots. This proves to have been an error of observation, and 

 the characters upon which this name was founded are likewise fictitious. Aedes 

 euplocamus is a closely allied species, differing in having the hind tibiae entirely 

 black, but which has been confused with scapularis. Dr. Goeldi figures as the 

 larva and pupa of Aedes scapularis those of Culex imitator Theobald (Os 

 mosquitos no Para, 1905, plate C, figs. 33, 33). 



AEDES EUPLOCAMUS Dyar & Knab. 

 Aedes euplocamus Dyar & Knab, Journ. N. Y. Ent. See, xiv, 190, 199, 1906. 

 Aedes euplocamus Dyar & Knab (in part), Proc. Biol. Soc. Wash., xix, 162, 1906. 



Obiginal Descbiption of Aedes ettplocamus : 



Antennal tuft small, at the middle; head hairs single. Air tube a little over 

 2X1 with even pecten of 12 teeth to the middle. Anal segment ringed; gills long, 

 pointed, spotted. 



Collected by the junior author at Zent, near Port Limon, Costa Rica, in a ditch. 

 It was named " Culex trivittatus Coq." by Mr. Coquillett, but the larva disagrees. 



The following is an abstract of the table: 



1. Air tube with the tuft beyond the pecten 8 



8. Pecten of the air tube with evenly spaced teeth 13 



13. Comb scales more numerous to many in a patch 21 



21. Anal segment ringed by the plate 22 



22. Air tube twice as long as wide or less, pecten of 12-14 teeth 26 



26. Scales of comb evenly spinulated without central thorn 27 



27. Body pilose 28 



28. Pecten scarcely over half of tube; tuft normal 29 



29. Lateral hairs single on third to fifth abdominal segments. . euplocamus 



