148 Psyche [December 



larvae resembling those of Cryptophagus are sometimes found among 

 the beetles in the nests of humble-bees." Eichhoff (1866) after 

 examining several Bombus nests states that A. nigricornis was 

 nearly always present and that single specimens of silaceus and 

 pallens occurred in the same situations. Gorham (1869) captured 

 A. pallens together with certain species of Cryptophagus in a nest 

 of Bomhiis pratorum. Ferris (1869-'70), while collecting in the 

 Pyrenees, took an A. nigricornis attached to the antenna of a B. 

 montanus, and though he did not know of the observations of Bold 

 and Cams and Gerstaecker he nevertheless drew the same infer- 

 ence from his observations as the two German authors. Bugnion 

 (1869-'70) in a letter to Ferris recorded the following observation: 

 ""While collecting at Angeiades (alt. 1900 m.) in the Alps of Vaud, 

 in the month of August 1866, I took a Bombus which had an 

 Antherophagns pallens Oliv. attached to its proboscis by the mandi- 

 bles." Seidlitz (1869-'70), commenting on Ferris' observations, 

 records the occurrence in a museum collection of three Bombi each 

 with an Antherophagus attached to an appendage. In 1875 Ferris 

 published a detailed description of the larva of A. silaceus taken 

 from the nest of B. sylvarum. Hoffer (1883), Fowler (1889), 

 Sharp (1899), Wagner (1907), Reitter (1911), Sladen (1912) and 

 Renter (1913) all give brief notices and Wagner publishes a figure 

 of A. nigricornis attached to the bee's proboscis. 



The accounts of the North American A. ochraceus though meager 

 go back to 1864 when Fackard recorded its capture by F. W. Fut- 

 nam in several Bombus nests in Massachusetts and Vermont. 

 Fackard figured the beetle in this paper and the beetle and larva 

 in two of his well-known books (1872, 1873). J. B. Smith (1909) 

 and Blatchley (1910) mention the occurrence of A. ochraceus on 

 various flowers and the former notes its occurrence in Bombus 

 nests. Casey (1900) in his taxonomic revision of the Crypto- 

 phagidse says nothing about the habits of the beetle, though he 

 makes the following significant remarks on the genus (p. 87): 

 "This is one of most isolated genera of the family and contains 

 by far the largest species, Haplolophus being the only other which 

 approaches it in this respect. The emargination of the clj^eus, 

 very deep in the male but feeble in the female is apparently a 

 unique character in the family," etc. 



The observations recorded at the beginning of this paper to- 



