326 KATHARINE FOOT AND E. C. STROBELL. 



RECORD OF CAGE 3, 1912. l 



Fi Hybrid 9 (from E. variolarius X E. ictericus) and pure E. ictericus cf one pair. 

 June 



15 3-45 P- M. mating. Continued to mate 17 hours. 

 21 20 eggs (in two groups) 15 survived first moult. 

 24 8 eggs. 7 hatched. 



28 6 eggs. 5 hatched. 



29 13 eggs. 12 hatched. 



33 reared to winged stage (i6c? and 17 9 ). 



When some of the nymphs from the above four sets of eggs reached the 

 third or fourth moult, they were transferred to a large cage and there- 

 fore some specimens from each of these four sets were combined and 

 thus the individuality of each set was lost. 



July 



5 12 eggs. 10 hatched. 9 reared to winged stage (30? and 69). 



6 14 eggs. All hatched. 13 reared to winged stage (5 cf and 8 9 ). 



8 7 eggs (on wire top of cage 1 12 hatched. 9 reared to winged stage (2cf 



9 6 eggs (on wire top of cage / and 79). 



12 12 eggs. (5 of them on wire top of cage) 10 hatched. 9 reared to winged 



stage (5c? and 49). 



1 6 8 eggs. All hatched. 7 reared to winged stage. 5 cf and 29. 



21 5 A. M. 6 eggs (on wire top of cage). All hatched. All reared to winged 

 stage. (40" and 29.) 



21 5 A. M. mating. Continued to mate 21 hours. 



24 18 eggs. All hatched. 16 reared to winged stage. (So 71 and 89.) 



30 22 eggs (in 5 groups). 21 hatched. 18 reared to winged stage. (lod 1 



and 89.) 

 August 



6 5 eg^s"! 



VA11 hatched. 9 reared to winged stage, (scf and 49 ). 

 9 6 eggsj 



13 14 eggs (in 4 groups). 12 hatched. 8 reared to winged stage, (scf and 



39.) 



17 12 eggs (in 2 groups), n hatched. Later added to nymphs from eggs 



deposited August 28. 



22 3.30 P. M. mating. Continued to mate 48 hours. 



28 6 eggs (scattered on wire top of cage). 5 hatched. Later added these to 



nymphs from eggs deposited August 17. 12 reared to winged stage. 



(8cf and 49.) 

 30 Killed both the male and female. Both were inert and apparently nearly 



dying. (The female has had only four legs since July 12.) Preserved in 



glycerine (tube 33). See photo 64 for the male. 

 All the females of this pair and 20 males are preserved as pinned specimens; 



the rest of the males are preserved in glycerine. See photos 65-69 for 



twenty-five specimens. 



1 The data of this record are taken from our notes from which we have selected 

 only the essential items, omitting such details as the dates of hatching, the dates 

 when the five moults occured and the number of nymphs that survived each 

 moult. The eggs hatch from five to seven days after deposition, this variation 

 depending largely on the temperature . 



