110 Psyche [June 



metre long. The remaining two cocoons were buried in soil con- 

 tained in a tin box and when next examined, Dec. 28, the larva 

 within the larger cocoon was found dead. The small head, bear- 

 ing distinct black jaws was bent under the body as was also the 

 posterior end. The body nearly equalled in length the longer dia- 

 meter of the cocoon. As the male of the closely related species, 

 E. bombiformis is smaller than the female, the most probabl 

 explanation of the difference in the size of the cocoons is that the 

 larger ones contain females, the smaller ones males. 



Since writing the foregoing, I have discovered in the Journal of 

 the N. Y. Entomological Society for Dec. 1911, an article entitled 

 "Contributions toward the Life History of Emphor bombiformis," 

 by John A. Grossbeck, a record of observations made at Arlington, 

 N. J. The account does not in all respects correspond to the ob- 

 servations made on E.fuscojubatus, and as it would be interesting 

 to know whether the two behave differently because they are differ- 

 ent species or because of difference in the environment, I think, it 

 worth while to call attention to the nature of the discrepancies. 



Grossbeck describes the bee as beginning the nest by digging 

 with the fore legs in a thin layer of sod, brushing the fragments 

 away with the hind legs and turning around constantly. When the 

 hole is one-half an inch deep, soil is reached and a different method 

 of working begun. The soil is now moistened with saliva, small 

 pieces bitten off with the mandibles, where, with the assistance 

 of the abdomen, it is placed at the entrance. No doubt the differ- 

 ence in the manner of beginning to dig is due to the difference in 

 the character of the soil, for in the location chosen by E. fuscoju- 

 batus there was practically no sod and the bee commenced to 

 work at once on a sandy surface. 



The bees at Cape May Point seemed but little disturbed by our 

 presence at any time, except that when reconnoitring at the mouth 

 of the nest, a sudden movement or noise would cause a hasty re- 

 treat. We were able to sit quietly very close to the opening with- 

 out interfering with their coinings and goings. On the other 

 hand, the bees at Arlington showed great commotion, flew wildly 

 about, buzzed loudly and were so reluctant to enter their burrows 

 that a group of a little more than twelve were increased to about 

 thirty. Quiet ensued in about five minutes and later in the day 



