Vol. xxvi] entoiicmjOGical nkws. 219 



remained on the host longer or until completely engorged. 

 However, when taken from the host before complete cngorgc- 

 oient, they showed no difference in the length of the preovi- 

 position period bnt dqxMited their ^gs on an average as early 

 as those that were completdy engorged when detached, bat it 

 is to be noted that they deposited a smaller number of eggs. 



Another peculiar feature noted was the difference in the 

 length of incubation period between the eggs deposited at the 

 beginning of oviposition and those last deposited. Take for 

 instance Tick No. i which began ovipositing on June 8th and 

 continued until June 21st, covering a period of fourteen days. 

 The ^gs began hatching on July 5th and presumably they were 

 an hatched by July loth. If the eggs first deposited are the 

 first to hatch they would cover an incubation poiod of twenty- 

 seven days, while if the last deposited eggs were the last to 

 hatch their period would be nineteen days, making a differ- 

 ence of eight days between the eggs first deposited and those 

 of the last of oviposition. From this it appears that eggs first 

 deposited require a longer period of incubation than those de- 

 posited later. I hope at a later date to be able to make more 

 extended observations on this feature of the period of incuba- 

 tion. 



Fragments on North American Insects — IX. 



By A. A. GitAULT. Washington, D. C 



WBMBS noMB n w(uua (ttjnii./. 

 A» noted above, larvae in vmrioos ctafet of devek>pascnt were to 

 be found at Blacksbttrg on currants and gooceberriet on May 13. 190a. 

 From some of those kept indoors, aduhs were obtained on May a6^ 

 after ahotrt twelve day* in the cocoon. 



Nematas vantraUt (Hym.). 

 Some larvae obtained from wiHow in the same k>cality June a8, 190a. 

 cocooac d on the foOowing day and emer g ed between Jnly a3 and 31. 

 after from twenty-four to thirty-two days. 



CalHrfaytb gtandolosns fai Vtrglnia (Hym.). 

 Professor William B. Alwood was kind enough to bring to me from 

 Cmnberland Coort House. Virginia, some branches of scrub oak on 

 which were some very remarkable galls. They were within the acorns 

 (Jnly 30, 1901) and Profeasor Alwood told me that when he was ex- 

 amininR thrm whra on the trees, the tmall cases containing the larva 



