194 



T]ie autbor gives an amplified description of the insect, and 

 also describes the egg, larva and the pupa, giving figures of these 

 stages. 



A. iJiilcherrimus is found everywhere in the southern part of 

 Russian Turkestan. In 1909 the author found it in large 

 numbers in the Chodjen district of the province of Samarkand, 

 in the so-called ''Starvation steppe." In 1910 and 1911 he 

 obtained it frequently from larvae derived from various marshy 

 places in the district of Tashkent, of the province of Syr-Daria, 

 and from the rice-fields near the town of Andijan, in the province 

 of Fergana. A few years ago K. E. Demokidov found it in 

 Bairam-Ali in the district of Merv of the Transcaspian province. 

 Besides Russian Turkestan the insect is known only from India. 



As is common with other species of malaria -carrying mosquitos, 

 the females are more numerous than the males. Out of 367 

 insects found by the author and by G. V. Zenenko, 347 were 

 females and only 20 males, the proportion of the sexes thus 

 being 94-2- per cent, to 5A per cent. The flight of the mos- 

 quitos of the first generation begins in Turkestan in the 

 middle of April and probably even earlier; the latest time of 

 hatching out is given as the 15th October; thus the breeding of 

 the insects goes on during a period of six months. The number 

 of generations has not been established, but assuming that the 

 average duration of the development is three weeks (as is the 

 case in August and September, while during the summer it is 

 even shorter) there must be at least eight generations. 



Flight generally takes place either in the evening (6-7 o'clock) 

 or early in the morning, sometimes also during the day, at 

 2-3 p.m. The author gives some figures showing the numbers 

 of the mosquitos in human dwellings. G. V. Zenenko collected, 

 on the 14th August 1911, in two rooms of a house 190 specimens. 

 On the 9th September the author found in the same place over 

 90 specimens. The author mentions that A. pulcherrivius is 

 more attracted by the light of a lamp than other species of 

 malaria-carrying mosquitos in Turkestan; another feature of the 

 insect is that it will attack people in the open air, at some 

 distance from human habitations. It bites not only at night 

 or during the evening, but also during the day. The insect is very 

 cautious and it is difficult to kill one by hand when biting. 



The fertility of the females is very considerable, the total 

 number of eggs deposited in the laboratory exceeding 400. 

 These are usually laid in three lots at intervals of 2, 3 and even 

 6 days. Before each oviposition the female feeds on blood. 

 The author gives a table showing the details of oviposition in 

 his laboratory in 1911. The eggs are deposited in packets, which 

 settle afterwards into a star-shaped mass, the larvae hatching 

 out in two days. 



Larvae of A. 'pulcherrimiis were found by the author in pools 

 fed by subsoil water or by water from the " arikes." in Tashkent, 

 or in rice fields, near Andijan ; but their chief breeding places 

 are the small shallow lakes and the " tugai " which are filled 

 with water-plants. The author describes and figures one such 



