NOTES, ETC. 79 



their attacks to the Andreni'ice ; this will not apply to exotic 

 genera. The larva of Sty lops feeds upon that of the bee, 

 without causing the death of its victim ; on the latter 

 arriving at its perfect condition, the males of the Stt/lops 

 escape from its body between the segments of the abdomen ; 

 the female, on the contrary, never quits the body of the bee, 

 not possessing powers of locomotion, being in fact little more 

 than a shapeless maggot, with only the head and a portion 

 of the thorax protruding between the segments of the body 

 of the bee. For a history of these remarkable parasites 

 I may refer the reader to the works of Siebold, and to an 

 elaborate paper by Mr. G. Newport, in the 29th vol. of the 

 " Linnaean Transactions." 



There are other bee- parasites, belonging to the family 

 Chalcidhlce ; of these none is more remarkable than the 

 Melittohia Acasta, the larva of which feeds upon that of 

 sAnthophora acervorum ; the female is a small shining green 

 insect, about the twelfth of an inch long, furnished with wings, 

 the male being apterous, or having only rudimentary wings, 

 unfitted for flight ; it is also remarkable for having exceed- 

 ingly minute, or microscopic eyes — not, as in the female, com- 

 posed of numerous facets similar to those of most other 

 insects ; but simple, like the three ocelli with which its 

 crown is furnished. Many chalcididous parasites are known, 

 but the mention of one or two will suffice for our present 

 purpose, Monodontomerus nitidus, and dentipes ; both attack 

 the larvae of Anthuphora, and also that of Osmia rufa. On 

 more than one occasion I have discovered the larva of 

 3Ielittohia preying upon that of the 31 onodontomerus ; in 

 fact I have found it attacking the parasite quite as frequently 

 as the larva of the bee. 



The last family of parasites to which I shall at present 

 allude are the Chrysididce ; these insects are generally 



