362 ANNALS NEW YORK ACADEMY OF SCIENCES 



have been suppressed owing to some accident during metamorphosis and 

 that the antenna was produced in place of it. A second vertical triangle 

 also appears in this specimen alongside of the normal one. This super- 

 numerary triangle is similar to the normal in pilosity and in the arrange- 

 ment of the ocelli, but the anterior median ocellus has no cornea and is 

 represented merely by a small prominence. 



Lantern slides were also exhibited showing views of a two-headed turtle 

 with many abnormalities in the carapace and plastron. 



Mr. Lang said that the Tjader Expedition to British East Africa was un- 

 dertaken for the purpose of collecting material representing the fauna of 

 that region. From Mombasa, the expedition (which consisted of Mr. Rich- 

 ard Tjader and Mr. Lang, accompanied by 100 negro porters) proceeded 

 327 miles inland by the Uganda Railroad to Nairobi. A strip of territory 

 one mile on either side of the railroad is set aside as a government game 

 preserve, and is a place of refuge for mixed herds of antelopes, zebras and 

 ostriches. 



After spending a month collecting with great success on the Athi Plains, 

 the expedition moved northwest into the Rift Valley, encamping at Kijabe 

 and at various points in the lake country. 



Thence the course was southeast over the Laikipia Plateau to Mount 

 Kenia (18,000 feet), which the party ascended to a height of 14,000 feet. 

 Lack of provisions, however, compelled a return to the railroad, whence the 

 party proceeded to the coast, stopping to collect at intervals. 



Four and a half months' collecting netted the expedition a total of about 

 500 skins of birds and mammals. The most noteworthy of the latter was 

 the skin and skeleton of a fine bull elephant carrying 160 pounds of ivory, 

 4 rhinoceroses, 1 buffalo, 2 giraffes, one of which is unusually large, 8 zebras 

 representing different districts, and a fine series of antelopes. Lions, spotted 

 hyenas, aard-wolves and other carnivores were also taken. Mr. Lang also 

 secured a remarkable series of photographs illustrating the flora, fauna and 

 ethnology of the region. The talk was well illustrated with colored lantern 

 views. 



The section then adjourned. 



Roy Waldo Miner, 



Secretary. 



