22 



THE ENTOMOLOGIST S RECOBD. 



June 13th). The conditions of development were evidently most suitable to the 

 larvae; the resulting imagines were very fine specimens. 



1. (Normal ova and normal warm larvae). 



a ( + °pup8e, not above 37°C. transferred immediately.) 



Oval stg. Larval stg. Pupated. Pupal stg. Emerged. 



26 or 28.5-10.6 — 27-28.6 — 6-8.7 = 39-43 days. 



13 or 15 17-18 — ' 8-11 (days)= of 78 pupae, all emerge 



as var. teloides, but among these there are 9 ab. teloides-nigrifas- 

 ciata, and 37 other specimens show the same aberrational tendency. 

 The ground colour was darkened in all the specimens, and among them 

 are also 15 lucidocellata, 7 belonging to the fasciated, and 8 to the 

 common forms of teloides. The tendency to ab. marginalis was visible 

 in a few specimens. All but the 9 ab. leloides-nigrifasciata were let fly. 

 (" warm " pupae, not below 15°C.). 

 Oval stg. Larval stg.| Pupated. | Pupal stg. Emerged. 



26 or 28.5-10.6 

 14 or 16 



27-28.6 



9-11.7 = 42-46 days. 

 17-18 I — i 11-14 (days) = of 25 pupae all were var. 

 teloides, tending more or less towards nigrifasciata and marginalis. 

 Ground colour dark, 11 specimens were set. 



(transferred as larvae (pupating) to the mean shade-temperature, pupated 

 30.6 (instead of 28.6). After the 6.7 the pupae were kept at +20-40°C). 

 Oval stg. Larval stg. Pupated. Pupal stg. | Emerged. 



20 or 28.5-10.6; — 30.6 — 116.7 = 49-51 



13 or 15 I 20 — ' 16 (days) = of seven pupae, seven 



fine ab. mesoides-hrunnca, one with grey hindwing ocellus. The wing 

 margins were more dentated than usual. All were set. The sensitive 

 stage had evidently been passed — i.e., the form mesoides had been 

 fixed in these pupse by the 6.7 at about 10-12°C. The nights were only 

 8°C. warm at that period, the thermometer recording 50"^!?. (10°C.) only 

 on the 30.6. 

 Cg. (transferred as c^, but kept in the cold till the 16.7, afterwards -f 25 to 

 45°C. (7 + extr. °pupffi), and + 25 to 40°C. (6 + "pupaa). 

 Oval stg. Larval stg.| Pupated. I Pupal stg. | Emerged. 



26 or 28.5-10.6 — 30.6 — |21-22.7 = 54-57 days. 



13 or 15 20 — I 21-22 (days)= the 6 + pupa? emerge 



as rather dark var. mesoides, of the 7 + extr. "pupae only one emerges as 

 a fine ab. mesoides-hrumiea, the rest are dead or cripples of the same 

 form. This time the ground colour only was influenced by the extreme 

 temperatures. All were set. 

 C3. (transferred as under c^, but left wholly in the cold). 

 Oval stg. [Larval stg. Pupated. Pupal stg. Emerged. 



26 or 28.5-10.6 

 13 or 15 



18-22 



28.6-2.7 



1-3.8 = 65-69 days. 

 30-36 (days) = all the 70 pupae emerge 

 as normal or light colored var. mesoides, extreme form, with (in the ? s) 

 a full row of black spots in the margins of the forewings ; 36 were set. 



Of 296 specimens here recorded 190 are ab. eyanostkta, Rayn. 



Some Parasites of Lasius fuliginosus, L. niger, aud L. flavus. 



By W. C. CKAWLEY, B.A., F.E.S. 

 During August and September, 1898,1 bad a colony of TMftiii^i fuli- 

 (jinoHHs in a " Lubbock " observation nest. On August 29th, I noticed 

 among the larvfe three small brown objects, each stationed on a larva. 

 These mites were about the size of a pin's head, and had a highly 

 polished shell ; the legs, which did not project beyond the edge of the 

 shell, were soft and incapable of gripping the body of the larva. These 

 parasites occasionally changed their position on the larvte, and did not 



