375 



(■red that tlicv were in the act of uialinu: lli<i tlic male at 

 tirst stiKid on the hack of llic fciiialc in ihc normal ])o>irion, 

 thrv i-cniaincd rlins for oiiiv a hi'icf moment, when hy their 

 i-;!i)i<l mo\-enients ihe mah' was dislodiicd, and tho still in 

 ( ipula, end to end, thev were ahie to make ra])i<l ])i'o,UTes^; 

 aloHii' the wall, the female precedinij: and the male I'nnnino; 

 haekward. After ahont a. minute 1 sneeeeded in i:cttinii' tlioni 

 into a evanide hottle, hut they hroke a|)art hefoi-e dviuii'. 



Aiiain in March, T.)!-"), at the same ])lace I made similar 

 iihservations n])on our other connnon species ( I'cn jihiiichi aiis- 

 fidJasiae). 



The roaches lia\'e a favorite retreat in a crevice nnch-r the 

 I dii'e of the roof. When I tnrned on the light I saw several of 

 them rnnniiiii- alonii' the board, at the e<loi> of this crack, and I 

 recounized that they were in the activity of matinii'. The 

 female ran from j)lace to ])lace, very ra])idly, and now and 

 then a male dashed ont of the crevice after her, — if not pnr- 

 sned far the female sc^on retnrne(l, apparently in an etfort to 

 entice other males. After a ra])id scamper a male snccedcd in 

 landinii' n])on her \)iwk and niating took place, tho they re- 

 mained in this ]Kisition for only a few seconds, before the 

 female ran otf with the male still attached and rnnning- baek- 

 war<ls. A]iparently this is the normal method of mating wirh 

 roaches, at least if disturbed while this act is taking plac(\ for 

 I made similar observations last year as noted above on /'. 

 aiiici'icdiia. r stiecceded in securing the ])air in the cyanide 

 bottle and they died //( coinila. 



The Leather Beetle [Dcrmcsics niJiiiinis Fab.), a Troublesome 

 Pest of Dried Fish in Hawaii. 



BY J. F. iLLixGW'oirrn. 



Tliis cosmo])olitan Dermestid is an important pest of dried 

 fish in Idonoluln, as was recently brought to my attention by 

 ^Ir. M. B. Bairos, Territorial Food Inspector, Nov. 15, 101t>. 



Proc. Haw. Ent. Soc, III. Xo. 5, April, 191 8. 



