342 ENTOMOLOGICAL NEWS [Oct., '13 



Upon comparing the first larval stages of columbarius and 

 lectularius the following were found : the coloration is the 

 same, the structure appears to be identical in both, the anten- 

 nae are four-jointed, the distal two joints long and slender, 

 the distal joint longest, the proximal joint very short, the 

 second joint about half the length of the third, but stouter; 

 tarsi two-jointed, the first joint very short. Thus, the adult 

 dififerences do not hold for the young larvje. 



10. Coccinellids Probably Feeding upon Foliage (Col.). 



On March 19, 1904, Mr. F. C. Bishopp showed me adult specimens 

 of Megilla maculata and Coccinella sanguinca taken at Greenville, 

 Texas, and which he thought had been feeding upon the foHage of a 

 Rumcx. 



11. Occurrence of the Phorid Trineura aterrima Fabricius in 

 Texas (Dip.). 



At Paris. Texas, March 17, 1904, I captured a single specimen of 

 this phorid while using the sweeping net in meadows. The species 

 was identified by Brues. 



12. The Effect of the Local Climatic Variations Upon the Daily Ac- 

 tivities of Some Insect Groups (Col.). 



Entomologists are very familiar with the fltictuating luck 

 with which sugaring for moths is attended and those who 

 have paid even casual attention to collecting beetles at lights, 

 or to the jarring of trees at nights for scarabaeids, must have 

 noticed the same thing. It is a matter commonly experi- 

 enced, that, even in the height of the season's activity, some 

 days or some nights are much better for purposes of observa- 

 tion, without any apparent reason for it, other than it is clear 

 or cloudy or still or windy, or sultry or not, dark or the moon 

 shines. Sometimes, even at what are taken to be ideal times, 

 disappointment follows. The species of Lachnosterna seem 

 to be especially susceptible to any slight climatic changes and 

 on nights when they are expected in numbers, never appear. I 

 had frequently noticed this when collecting these beetles from 

 their foodplants, night after night. At lights, also. I have 

 seen them very abundant when least expected, on rather cool 

 evenings for instance. Since the activity of many nocturnal 

 insects commences during twilight or at dusk, it has often 



