Genu* Tihvorhyncldtes. 141 



I believe Dr. Leicester is describing some more species from 

 the Malay Peninsula. Although I have the specimens, they must 

 unfortunately be left until his descriptions are issued. 



TOXORHYNCHITBS IMMESEHICORS. Walker (1860). 

 Megarhinus immesericors. Walker (1860). 

 Culex regius. Thwaites ms. 

 Megarhinus giksii 9 • Theobald (1901). 

 Megarhinus subulifer. Dolleschall (1857?). 



Journ. Proc. Linn. Soc. Lond., p. 91 (1860) ; Proc. Linn. Soc. Zool. V., 

 p. 202 (1864), Walker; Mono. Culicid. I., p. 225 (1901) (immisericors) , 

 p. 227 (gilesii) ; III., p. 123 (1903) ; Proc. Roy. Soc. LXIX., p. 381 (1902), 

 Theobald; Handbk. Gnats, p. 129 (1900), and 2nd ed., pp. 273-274 and 

 514, Giles (1902); Les Moust., p. 230 (1905), Blanchard ; Spolia. 

 Zeylandica, II. Pt. VIII., p. 159 (1905), Green. 



Ernest Green has given many new details concerning this 

 species (Spo. Zey. II. Pt. VIII., pp. 159 to 164, and plate, 1905). 



He states that it is not an uncommon insect in the Royal 

 Botanic Gardens, Peradeniya (altitude 1,500 feet). He has 

 also taken it at Pundalu-oya at an elevation of 4000 feet. The 

 adult may be found resting on the trunks of trees, and still more 

 frequently on the stems of the Giant Bamboo (Dendesealamus 

 giganteus). It occasionally flies in at the open window of a 

 room (always in the daytime). 



Mr. Green states he has never known it bite. Females were 

 kept alive for eleven days on sliced bananas. 



Life history. — The eggs were laid singly and scattered over 

 the surface of the water, and do not tend to run together as 

 those of Anophelinae. The egg is 0*55 mm. long by 0*37 mm. 

 broad, creamy white, the surface closely studded with spinose 

 granules of varied sizes. Some of the ova hatched in two days, 

 dividing transversely across to liberate the larva. Young larvae 

 appear to rest horizontally when viewed dorsally. 



Their carnivorous habits were noticed. As they grow they 

 become bright reddish above, paler below — head and terminal 

 parts olivaceous brown. 



Green found that the natural breeding-place was in the 

 hollow stumps of the giant bamboos, and in small pools in the 

 angles of the branches of other trees. 



The cannibal habits seem to destroy its usefulness as a culex 

 destroyer, for it appears to feed upon all its own race first before 



