130 PROC. ENT. SOC. WASH., VOL. 20, NO. 6, JUNE, 1918 



near the emerald mines at Muzo, Colombia. Four of the females 

 were captured in a hut occupied by mine guards. This habita- 

 tion was palm thatched with side walls of reeds and bamboo. 

 It was open at one side and was in reality but little more than a 

 shed. Whether or not the capture of these females in a place of 

 this kind may be regarded as signifying that this species enters 

 habitations to attack man is open to question. The other nine 

 individuals were bred from larvae taken from a small heavily 

 shaded pool of clear but apparently stagnant water. As soon 

 as these larvae were collected they were placed in tubes and packed 

 on-mule back and were carried in this way until the adults emerged, 

 being examined twice daily, morning and evening. That the 

 larvae lived to pupate 'and emerge as adults under the continual 

 shaking to which they were subjected by being carried on mule back 

 during mountain travel indicates that this species is very adapt- 

 able and capable of living under the most strenuous conditions. 



THE IDENTITY OF APHIS CIRGEZANDIS FITCH, 



BY A. C. BAKER 



On June 11, 1852, Fitch collected five specimens of a species of 

 Aphis from Gallium circaezans in "dug way woods" Salem. These 

 he listed in his cabinet under the name Aphis circezandis and the 

 numbers 1319-'23. He made descriptive notes at the time, 

 which are now in the writer's hands. 



In his 13th Report (1870), page 501, he described this species 

 under his cabinet name from these same notes. He gives the 

 species the name, however, "should further researches show it to 

 be undescribed." Although not entirely indisputable the stand- 

 ing of such a name has been ruled upon by the International Com- 

 mission. (Opinion 49.) It is evident then that we must consider 

 this name. So far as the writer is able to learn no recognition of 

 the species has been made since the original description was 

 published. 



In the National Museum collections four of Fitch's specimens 

 are preserved. These are 1319, 1320, 1321 and 1322. Speci- 

 men 1323 is lost. Apparently from Fitch's notes the specimen 

 was apterous and the writer has searched the Fitch collection very 

 carefully for it. The other four specimens are alate forms in 

 somewhat fragmentary condition, but sufficiently intact to dis- 

 cern the important characters. The following description has 

 been drawn up from these specimens. 



Alate viviparous female. Antennae with the following measurements. 

 1110.288mm.; IV0.176mm.; V0.208mm.; VI (0.112 + 0.288 mm.). Tin-si- 



