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usual quantity of blood at the previous bite, it stings again and sucks dur- 

 ing two minutes. (Probably the interposition of the muslin interferes with 

 the act of sucking.) At this period, knowing that only the fecundated 

 females draw blood. I introduced a small quantity of water into the phial, 

 in order that eggs might be laid. The insect immediately goes to the water, 

 and after discharging a whitish viscid substance upon the sides of the tube, 

 deposits some white eggs, close to the edge of the water. Six of them were 

 disposed vertically one above the other. The rest of the day the insect was 

 busy besmearing every part of its body (legs, wings, and head included) 

 with a viscid substance collected with the hind legs from the posterior 

 extremity of the body. The white, eggs turned black after some hours. 



19th. Continues laying eggs. 



20th. More eggs; some upon the sides of the phial; stings my hand 

 and sucks readily. The water becomes colored from the excrementitious 

 particles discharged into it. 



21st. Refuses to sting ; has lost its left hind leg. 



22d. Still laying. One small wriggler has been hatched. Cannot be 

 got to sting. 



23d. More eggs laid. Refuses to sting. 



24th. The water is teeming with wrigglers. The insect was now 

 transferred to another phial with water. Stings my bare hand very readily, 

 taking about seven and a half minutes to fill. 



25th. Refuses to sting. No new eggs. 



26th. Bites readily, but, unable to reach a blood vessel, withdraws its 

 sting, and after feeling the surface of the skin, finds a more convenient 

 spot, where it fills completely. 



27th. Refuses to sting. In moving the phial the insect was soaked by 

 the water, but recovered. 



28th. Has laid over fifty eggs since yesterday evening ; bites readily, 

 and fills from my hand. 



29th. Refuses to sting. No new eggs. Most of the white marks upon 

 the body of the mosquito have nearly disappeared. 



31st. Bites readily, and fills from the palm of my hand. 



February 2. Bites, and fills from my thumb. Having been transferred 

 to another phial with fresh water, was found lying partly submerged and 

 motionless. On filtering off the water the insect revived. It was then 

 transferred to a new dry phial for the purpose of continuing the observa- 

 tions during my trip to New York. 



3d. Still retains some black blood ; has lost its left foreleg. 



4th. Bites, and fills from my hand. Taken on board of the steamer 

 starting for New York. 



5th. Refuses to sting. 



6th. Bites, and fills readily. 



