12 BRITISH APHIDES. 



of the newer insects. Also the proboscis of both 

 Reaumur's and Bonnet's Aphides was very long, whilst 

 the others (those under examination) had very short 

 rostra." 



Probably Reaumur's insect here alluded to is either 

 Stomaphis quercus or Lachnus longipes ; but their great 

 size, &c, compared with "•£§ of an inch," would 

 exclude them altogether from identity. 



The reader is referred to Prof. Huxley's memoir* 

 for a full description, but the same abstracted appears 

 thus : 



Size jt£ of inch. Pale green, with four rows of 

 blackish rounded spots ; the spots in the medial line 

 larger than the rest, each spot raised above the integu- 

 ment, and furnished with tufts of long, knobbed, glan- 

 dular hairs. Eyes red, with small tubercles. Antennas 

 about equal to the body, annulated, and seven-jointed ; 

 the proximal half setose. Promuscisf [proboscis] 

 short, extending only to the prothoracic sternum. 

 Abdomen terminated by two rounded anal valves. 



The small size, the four rows of rounded spots 

 tufted with capitate setae, the eyes (not " small ") fur- 

 nished with tubercles, the short rostrum, the long 

 seven-jointed antennas, the anal valves, and the 

 numerous true ova, leave no doubt on my mind that 

 these descriptive details belong to Callipterus rather 

 than to Vacuna. 



If the winged female had been described in the 

 Memoir, no doubt could have arisen as to the genus 

 and species under dissection. It may be also noted 

 that the minute size of the oviparous female of The- 

 laxes is not so convenient for examination of the internal 

 organs as the larger female of Callipterut quercHs. 

 I believe that, if Gallipterus quercHs be substituted 

 for Vacuna dryophila in the Memoir referred to, the 



* Prof, Huxley. "The Agamic Reproduction of Aphis," ' Linn. Trans., 

 L8S8, pi. in. p. 202 ei eeq. ' 



f Unless this word is derived from the unlikely word promo, it would 

 appear to bayearisenfrom a printer's error for proboscis. As"promuscis" 

 has been eopied by others, I make no alteration, but only a suggestion. 



