58 THE SCOTTISH NATURALIST 



Oviparous Female. (Fig. 3 and Fig. 2, A. and D.) 

 To the naked eye appearing of a deep yellow colour ; 

 under magnification greenish yellow with brown spots on 

 thorax and abdomen. Antenjice very pale green with the 

 apices of the 3rd, 4th, and 5th segment and the entire 6th 

 segment brownish. Much shorter than in the alate vivi- 

 parous female and with the few spines considerably larger 

 and capitate. No sensoria on the 3rd segment. Proportions 

 of segments 4, 4, 16, 10, 8 (55 + 6|-). Total length 0-82 mm. 

 to 0-85 mm. Head with 10 long capitate bristles on the 

 dorsal surface. TJiorax and abdomen with rows of brown 

 spots arranged as in Fig. 3. These spots are of irregular 

 shape and bear a variable number of long capitate bristles. 

 Cauda slightly longer than cornicles, broadly conical, not 

 knobbed, and with several long-pointed bristles. Anal plate 

 more than twice as broad as the cauda, entire, subconical 

 with the extremity rounded and bearing fine bristles. 

 Cornicles greenish yellow, tipped with light brown. Legs 

 pale ochreous green with the tarsi brown. Hind tibiae 

 thickened and with numerous sensoria along the basal 

 three-fourths of its length, and with many bristles towards 

 the distal extremity. Length of hind femur 0-15 mm., tibia 

 0-52 mm., and tarsi o-i2 mm. . . . 



Length varying from 1-96 mm. to 2-26 mm. 



Alate Male. (Fig. 2, C.) 



Antenjics much longer than in the alate viviparous or 

 oviparous female. Third segment with nine sensoria, 4th 

 and 5th each with four, basal part of 6th with the primary 

 sensorium and also with a smaller one preceding it. Pro- 

 portions of segments 5, 4, 32, 24, 14 (6-|H-8i). Total length 

 1-4 mm. (equal to length of body). Head with a few very 

 short and faintly capitate bristles. Wings much larger than 

 in female, 2 mm. long by 0-68 mm. broad, considerably longer 

 than the body. When collected the male was not dis- 

 tinguished from the alate female, and in consequence no 

 special colour notes were made from it in the fresh state, 

 but in the mounted specimens the brown spots on the 

 abdomen characteristic of the female are seen to be replaced 



