76 Journal New York Entomological Society. [Vol. xiv. 



is short and bears, both above and below, a series of hairs in pairs 

 and singly. The comb consists of half a dozen scales in a row. The 

 pupa is more elongate than that of Trichoprosopon and has, like it, 

 tufts upon the last two segments. The paddles are very poorly 

 developed. 



The showy Megarhinus separates is a common species in the Amazon 

 region. Mr. A. Ducke, entomological preparator of the museum, 

 has experienced its bite and compares it in painfulness to the sting of 

 a wasp. He also obtained the eggs, larvae and pupae. The eggs are 

 elongate, almost cylindrical, and float upon the water in groups of 

 four to six lying side by side. One end of the egg is smooth, while 

 more than half of it is granular and covered with very prominent 

 tubercles. These tubercles are more or less constricted at the base and 

 appear to have an opening at the tip. They serve to keep the egg 

 afloat by the air retained between them. When the larvre are hatched 

 the egg splits open lengthwise at the smooth end, a mode very distinct 

 from that observed in other mosquito eggs. The larva greatly re- 

 sembles that of our North American Megarhinus portoricensis. Dis- 

 tinguishing characters are furnished in the labial plate, mandibles and 

 antennas. The predaceous character of the larvae appears to have 

 escaped the author. 



Anopheles albipes is a rather rare mosquito at Para and only ap- 

 pears occasionally in the outskirts at dark. The author did not suc- 

 ceed in finding the larvae in their natural habitat. Eggs were ob- 

 tained in the usual manner from a female fed successive rations of 

 blood. Figures are given of the eggs greatly enlarged and also one 

 to show their stellate grouping as laid upon the water. The young 

 larva has two very long terminal hairs. This mosquito is distinguished 

 by the common people from the ordinary mosquito or " carapand " 

 by the popular name " morocbca." 



The chapter closes with descriptions of two new species of 

 Chironomus, — C. calligraphus and C. holoprasinus, — of a little biting 

 fly " piiruim" a species of Ceratopogon, under the name Hamato- 

 myidium paraense, and of the famous "pium" of the upper Amazons as 

 Simulium amazonicum. The eggs and larva of Chironomus calligraphus 

 are figured, as also the imago of the Ceratopogon and its wing greatly 

 enlarged. 



