HANCOCK 173 



was made up of fourteen specimens. One was unable to throw off the 

 amnion, and it lays beside the hole. It had reached the outside, but no fur- 

 •ther, showing that it had wormed its way out and finally fell exhausted. It 

 is remarkable how nearly uniform in development this little brood was, all 

 coming into the world simultaneously after twenty-three days' incubation. 

 I transferred this new family to another freshly prepared jar, picking each 

 one up separately on the tip of a glass rod previously dipped in water to 

 moisten it. On this affixed drop of fluid each was transferred and wiped 

 off on a piece of grass gently. In a few moments they recovered from 

 the bath, and were perfectly at home. May 31, i8g8. 



THE NUMBER OF LARV^ IN EACH BROOD OF TETTIX ORNA- 

 TUS TABULATED --THIRTEEN LARV^ THE AVERAGE- 

 SIMULTANEOUS EMERGENCE OF LARV^. 



At 1 1 :45 a. m. a new brood of Tettix ornatus emerged, consisting of 

 thirteen individuals. They came rather crowding each other, several at a 

 time, with little intervals between. At the end of three minutes all were 

 out. A summary of the broods hatched in two days in vivarium may be 

 tabulated thus: 



First brood, May 31, 1898, 12 larvse, emerging rather rapidly in regular 



order, one tardy. Total, 13 larvE. 

 Second brood. May 31, l8g8, 13 larvae, one unable to throw off the amnion. 



Total, 13 larvae. 

 Third brood, June I, l8g8, 13 larvae. Total, 13 larvae. 



Two additional larvae found; unable to place them. 



June I, 1898. 



TETTIX ORNATUS BROOD OF SIXTEEN HATCHED JUNE i. 



While looking in the vivarium jar at 1:15 p.m. sixteen larva; came out 

 almost simultaneously, spreading in all directions, the sunlight attracting 

 them to the margin of the jar. The parent female is not recorded. 

 June I, i8q8. 



TETTIX ORNATUS OVIPOSITING, EIGHTEEN MINUTES COV- 

 ERING HER EGGS FROM VIEW. 



I noticed two females deposit their eggs at the same time in \ivarium. 

 One of these commenced to oviposit at 4 o'clock p. m., completing the 

 process at 4:40 p. m. She made no attempt to cover her eggs, they being 

 laid among lichens. The second specimen took a position at the margin of 

 the jar. After a half hour she commenced covering her eggs, not moving 

 from her original position, using first one leg, then the other, in dragging 

 particles of sand, lichens, earth, and other debris over the hole, in this 

 process reaching dexterously out behind to get them until the eggs were 

 completely hidden from view. She spent eighteen minutes in accomplish- 

 ing the task. Her pronotum is not extended far behind. June i, iSgS. 



