2/2 ENTOMOLOGICAL NEWS. [June, '17 



in California, states that the four species with which she work- 

 ed place their eggs on the stems. It is certainly the case with 

 Notonccta imdulata whose elongate white eggs may be found, 

 in large numbers, on the dead stems of weeds lodged in the 

 water or on any other support. Photographs of the eggs are 

 shown in Plate XX, figs. 6. 3 and 4. 



SEASONAL RANGE. 



The adults may be taken in Kansas any time during the win- 

 ter when the waters are open enough to permit collecting. 

 They pass the coldest portions of the year in the mud or among 

 the rubbish and dead leaves in the pool. They can even spend 

 as long a time as six weeks in damp piles of dead sticks, so 

 it does not necessarily follow that they perish because the pools 

 diminish during weather when they are but sluggishly active. 

 During the season of 1916 egg laying began about the middle of 

 March and continued till the end of April. The largest num- 

 bers were noted on April nth. By the 4th of May, the first and 

 second instar nymphs were in greatest abundance in all the 

 pools under observation which were teeming at this time with 

 ostracods. The 25th of May found many of the nymphs in 

 the fifth instar and the adults were appearing in numbers June 

 ist. A few nymphs in the earlier instars were still to be noted, 

 but no eggs had been found for some time. 



On June 7th freshly laid eggs were again taken and they- 

 continued to be noted up to the first week in August. Many 

 nymphs in their first stages were noted on July I3th and many 

 of these reached the adult stage about August 2oth. By this 

 time the pools that had been chosen for the daily field obser- 

 vations were either completely gone or so greatly restricted 

 that observations were transferred to the larger bodies of 

 water. 



In the laboratory rearings were made in stender and petri 

 dishes one bug to a dish. From these rearings it may be said 

 that the eggs laid on March i8th hatched March 3Oth. Eggs 

 laid April I2th showed the pink eye spots April i6th, and be- 

 gan hatching April 22nd. 



The average time for each of the first four instars was 7 



