OF WASHINGTON, VOLUME XIII, 1911. 53 



BALANININ^E. 

 Balaninus pardalis Chittenden. 



September 29, (auth. Chittenden). 

 Balaninus parvidens Chittenden. 



September, October (auth. Chittenden). 

 Balaninus victoriensis Chittenden. 



Took 1,129 specimens at trap lantern in cotton field, October 

 1, 1897. Caught in large numbers in fire traps set for cotton boll 

 weevil in July, 1903. On October 2, 1904, gathered 167 acorns 

 of live oak (Quercus mrginiana}. The larvae began to come out 

 October 7 and continued emerging until October 14, when 266 

 larvas had issued. They were placed in jars in loose earth and 

 immediately began to burrow, going down 3 to 5 inches. Seven- 

 teen larvae formed cells against the glass, where they could be 

 observed. Half of the jars were kept indoors and half outdoors. 

 On March 7, 1905, the larvae were noticed moving, and exhibited 

 the first signs of pupation. On March 15, the first pupa was ob- 

 served. The pupae formed almost simultaneously in the jars 

 indoors and outdoors; they moved around a great deal in their 

 cells. Adults began to be observed April 2. On April 22 put in 

 leaves of white elm, ash, rose; the weevils fed heartily on the 

 elm leaves and then went to sleep. They sleep with the bill and 

 feet curled up as if dead. From another lot of acorns collected 

 in October, 1904, the larvae emerged in November, were pupat- 

 ing between June 23 and 30, 1905, and first became adult July 

 1. Specimens from black jack (Quercus mar Handle a) acorns col- 

 lected October 29, 1905, matured in June, 1906. Specimens from 

 live oak (Quercus mrginiana} acorns collected November 5, 1906, 

 were pupae April 29, 1907, and adult May 26. This weevil has 

 been found breeding also in post oak (Quercus minor} and pin 

 oak (Quercus breviloba). As many as three larvae have been 

 found in a single acorn. While the larvae usually leave the 

 acorns in October and November, some will emerge in Septem- 

 ber and some in December. The pupal cell is not formed until 

 spring after the winter sleep is over. They pupate in April and 

 May, and become adult in May and June. They feed once in 

 every four or six days, preferring oak leaves. Between meals 

 they curl up and sleep in some hiding place. Active life begins 

 in August (Mitchell). 



ANTHONOMINjE. 



Tachypterellus quadrigibbus Say. 



The apple weevil larva 1 are found in fruit of red haw ((><;- 

 tcegus mollis); found larva* April 23, 1907, pupated April 30, and 



