34 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



is one of her young. Thinking she might give birth to more, 

 she was kept in a hollowed, split chip, with some of her young. 

 but she r -uddenly about a week later, and her young had 



:-d in the wood. Two other isolations of this sort yielded 

 three and five, legged larvae from the supposed pre- 

 pupal form, and these legged larvae crawled into the pores of the 

 wood. fed. lost their legs, and became the normal larva of Hubbard. 

 These larvae appear to be remarkably slow in their growth, four 

 months (August to December i showing but slight increase in the 

 of young specimens in captivity. It is impossible to say at 

 -ent. what substance in the rotting wood furnishes their nutri- 

 ment. Often the young larva is found following one of the com- 

 paratively large pores of the oak wood, leaving the hole behind it 

 plugged with fine particles from the walls of the pore which seems 

 to be only very slightly enlarged, only the tyloses appearing to have 

 been eaten. After the newborn, legged larva had been left a 

 hours in the crevice of a chip, the alimentary canal could be 

 seen to contain minute quantities of food, of a brown color like 

 the decayed wood. 



An examination of Hubbard's alcoholic material discloses several 

 specimens of the reproductive form, some of which contain em- 

 bryos, while others had given birth to their progeny. A single 

 specimen of the normal tailed and legless form of larva, is remark- 

 able in that the body contents has separated into oblong oval 

 bodies, assuming the appearance of the embryos in the repro- 

 ductive form. This may be accidental or it may be significant. 

 In another vial are numerous pupa? some of which seem to support 

 the idea of the occurrence of winged adults of both sexes, but as 

 they have been in alcohol for nearly forty years their condition 

 is not the best. X xual differences are observable among the 

 few winged adults still preserved hi the collection. These are 

 thought to be males although the anal structures, seen in cleared 

 - ,-s. are not comparable with the genitalia of any beetle known 

 to me. 1 



- -cimen was sent to Mr. Fredk. Muir of Honolulu, who, with Dr. 

 Dav - - published an extended paper on the male genitalia 



of beet!-:- Trans. Ent. Soc.. London. 1912. pp. 477-642. plates XLII-LXXVIII) 

 and his repl; - TO leave the sex still more uncertain. He write- 



I should have pronounced it a female. There is no dfjinite male 



.nd the only way to settle the point definitely is by dissection 



of the body of a fresh specimen for the testes or ovarian tubes. If this be 



a male then the only form I can assoc . -vita is Cyphon and Microcara, 



-. :-h Sharp and I have not yet been able to connect with any other 



form, or even to associate together with any certainty. Micromalthus may 



-omewhat like Cyp'^ :'. I am here only judging by the aedeagus and 



not bv anv other external structu 



