86 PSYCHE [August 



about four feet above the bottom third of the iron bedstead; the bed was therefore 

 iu fidl glare of the hght. A neat, bronzed steam radiator sujijilied heat. 



Upon entering the room a little before midnight, I had turned on the lights and 

 they were burning fully one-half hour before I prepared to retire; it was then about 

 12:30 A. M. I then apj)roached the bed and happening to glance over it, observed 

 a single nymph oilectidariuft, in about instar III, resting on the spread; this nymph 

 was pale. I killed it. After this, I looked the bed over, and finally decided not to 

 get into it, but to lie across it after disrobing, leave the lights on and obtain such 

 sleep as possible under the circumstances. In carrying this out, I did not disturb 

 the bed linen. After lying stretched out across the bed in this manner for about 

 half an hour, I awoke, and upon looking around me, observed sjiecimens of lectularms 

 rapidly crawling away over the bedspread, all of them swollen Avith blood and having 

 the appearance of being very recently fed. Most of these, fully a dozen, were caught 

 and killed; they were in instars II, III, and IV. The time was about 1:20 A. M. 

 Between this hour and 3:30 A. M., I dozed off from time to time, lying in the same 

 place, but distinctly remember waking at 2 A. M. and 3: 20 A. M. and discovering 

 numerous specimens hurrying away over the coverlid. Each time I arose and killed 

 all of the bugs in sight, and also those, which having been glutted from the host, had 

 left it, crawled 2 or 3 feet away, and were hiding in the bed linen; these latter were 

 discovered after a brief search, and were evidently hiding temporarily. At both of 

 these times, the majority of the insects were in instars III and IV, but two were 

 found in V, and one in I, the latter discovered coolly feeding from my fingers, and 

 from its color, eviflently obtaining its first meal. At 2 o'clock, I also killed one or 

 two rather pale nymphs of about instar III, crawling toward the host. No adults 

 were observed. 



At about 3 : 30 A. M. I decided to leave the bed, and passed the rest of the 

 morning dozing av\ay in a rocking chair. I must have slept all of this time, until 

 about G o'clock, and did not notice any more of the insects. 



The attack of these insects lasted several hours, and they did not mind exposure 

 to the light in going to the host; from such evidence as I was able to gather, mostly 

 concerning their color, they appeared to have been hungry; as many of them were 

 pale and flat, and the desire for food probal)ly overcame their negative reaction to 

 light. Each individual after engorgement, left the host and went into hiding, tending 

 to show that, their natural desire for food having been satisfied, the negative reaction 

 to light l^ecame dominant again. This fact could as well indicate that they leave 

 the host after engorgement naturally through instinct, whether in darkness or in the 

 light. 



