50 



feet up in the air; the wind would quite frequently 

 stop the progress of s^nj-e of the individuals which 

 would then seem ko be hovering at one point. Howe- 

 ver, most of them wore making moderate siDeed against 

 it although I judged,, its- velocity to be about twelve 

 miles an hour. 



On April 8, I found an eggmass of some locust 

 in sandy soil in a cane field near the Mulgrave River. 

 On April tenth an eggparasite was reared from them 

 {Scelio ovi Girault MS.). These eggs were most pro- 

 bably those of danica but may have been Locusta 

 australis Brunner v. W. There is no way at present 

 of identifying this stage. Later in April, this parasite, 

 together Avith another species described by Froggatt 

 (Scelio australis Froggatt) and known to be para- 

 sitic upon the eggs of australis, was observed to be 

 common on the ground, usually in meadows, along 

 roadways and in company with the locusts. It conti- 

 nued common in such situations, more especially 

 over places where eggs had been deposited, until 

 about the middle of June when it disappeared. 

 We thus have some reason for thinking that its 

 generation is continued over in the eggs of the locust. 

 On April 11 I made the general observation that the 

 locusts were then becoming decidedly less abundant, 

 correlated with greater abundance at hghts at night 

 (this marked attraction to lights seems to be in 

 some way related to their first appearances and final 

 disappearances). Dead bodies were numerous on the 

 ground. In some bare, compact, dark, silt, loam soil 

 in a meadow or paddock, I found a number of egg- 

 masses but the dead females were lying on the soil near 

 them, not mutilated. Nor were any detached abdo- 

 mens plugging the holes which were open until the 

 mucus plug over the eggmass was reached. It was 

 also noticed then that Locusta australis was flying 

 in larger numbers with danica. By April 17 at Nelson, 

 the adults of both species had practically died out. 

 Yet near Hambledon Junction on the same day, 

 adults of both were common and abundant in cane 

 fields and what is more a large number of young 

 locusts were encountered. These were in the first 

 postembryonic stage'). The cane in the vicinity of 

 Hambledon had been considerably injured in the 

 characteristic manner ah-eady described; the white 

 excrement about the base of the plants was especially 

 conspicuous- here as it contrasted with the red soil 

 and was very abundant, appearing not unlike as if 

 some men had gone along each row with bags of oats 

 or perhaps rice, and allowed the latter to flow out 

 from a small opening as they walked along, directing 

 the flow at the base of each plant. At Nelson, a pair 

 of danica were noticed mating and near the town, an 

 occasional flock of adults was encountered, though 

 as stated, practically all had died. On April 22, I had 

 a load of the dark red volcanic soil brought from 

 Hambledon; it was filled with the eggmasses of a 

 locust; these were kept and they aestivated (they 

 had not hatched up to the end of August). On April 29, 

 across the Mulgrave from Nelson, another colony of 



young in two stages were encountered, together with 

 a number of the Scelios. 



On June 6, 1912 I made a note to the effect that 

 no young or old locusts had been seen since May 24. 

 However, on June 15, I saw two separate colonies of 

 young near Nelson both with all of their indivi- 

 duals in the last stage; no adults were observed. 

 Previously, in May, I had obtained specimens from 

 colonies of young on the sixth (second stage of larva), 

 eighth (at Aloomba; second and fourth larval stages), 

 tenth (second, third and fourth stages), eighteenth 

 (fourth larval stage) and twenty -fourth (fourth stage). 

 On July 7 an isolated colony of adults of australis 

 and young of the last larval stage were encountered 

 in midforest near Aloomba. The young were colored 

 Hke the adults but not beeing quite sure of the identity 

 of the two (since I was under the impression that all 

 of the young met with formed a scattering winter 

 generation of danica) I confined a number the follo- 

 wing day under a cage over grass; several of these 

 transformed a few days later into adults of australis; 

 on August 26 the cage still contained a living adult 

 male. - ,«| 



Thus, from what I have written here, it seems 

 plain that while danica was gregarious it bred very 

 slowly, passing through but the single generation. 

 It first appeared in noticeable numbers in the first 

 week of January 1912 in the adult stage. The young 

 of the first and only generation did not appear until 

 the second week in February and did not mature 

 until the end of March; oviposition of the adults 

 of the first generation (parents of a second generation) 

 was probably at its height in the middle of April 

 and the adults then began to die. The eggs deposited 

 in the middle of April did not hatch but aestivated 

 (a large number of locust eggmasses obtained in April 

 have been kept; up to August 31, they had not hatched 

 though still healthy). The colonies of young encoun- 

 tered from the middle of April to the end of the first 

 week in July were Locusta australis and not danica 

 which passed the winter in the egg stage. The winter 

 generation of australis was very slow in developing 

 to maturity (about from April 15 to July 15) but in 

 August the adults certainly were not numerous. 



') As .shewn 

 stralis. 



later, the young of Locusta au- 



57. 89 Cymothoe (67. 1) 



Eine neue Cyiuothoë aus Kamerun. 



Von Arnold Schultze. 



Vor etwa zwei Jahren beobachtete ich in der Nähe 

 von Lomie (Süd-Kamerun), ohne des Tieres damals 

 habhaft werden zu können, eine Cymothoe, die auf den 

 ersten Bück an egesta erinnerte, aber trotzdem einen 

 fremdartigen Eindruck machte. In einer mir kürzlich 

 von meinem eingeborenen Sammler aus Kamerun zu- 

 gegangenen Sendung finde ich nun eine Cymothoe, 

 in der ich jene offenbar sehr- seltene Ai-t mit Sicher- 

 heit mederzuerkennen glaube und die ich in folgendem 

 beschreibe : 

 Cymothoe su a vis (J spec, n o v. 



Diese Art steht der egesta Cr. nahe, geholt aber 



