72 THE CANADIAN ENTOMOLOGIST 



ADDITIONS TO AGRILUS BIBLIOGRAPHY. 



BY C. A. FROST AND H. B. WEISS, 



New Brunswick, N. J. 



The following references were inadvertently omitted from the bibliography 

 published in this journal September and October, 1920. 

 A. subtropicus Schaeffer. 



Schaeffer, Sci. Bui. Mus. Brook. Inst., vol. I, p. 131, 1905. 



Collected on Momisia pallida (Schaeffer). 

 A. huachucae Schaeffer. 



Schaeffer, Sci. Bui. Mus. Brook. Inst., vol. I, p. 150, 1905. 



On oak (Schaeffer). 

 A. doUi Schaeffer. 



Schaeffer, Jour. N. Y. Ent. Soc, vol. XII, p. 210. 



Taken from branches of Acacia flexicaulis (Schaeffer). 

 A. quercus Schaeffer. 



Schaeffer, Sci. Bui. Mus. Brook. Inst., vol. I, p. 150, 1905. 



On oak (Schaeffer). 



CORRECTION OF A STATEMENT CONCERNING THE TERMINAL 

 ABDOMINAL STRUCTURES OF MALE INSECTS. 



BY G. C. CRAMPTON, PH. D. 

 Massachusetts Agricultural College, Amherst, Mass. 



The statement that the gonopods (outer claspers, representing modified 

 styli) of male insects probably represent the dorsal valvulse of the ovipositor 

 of the female (Canadian Entomologist, LI I, 1920, p. 180) is somewhat mis- 

 leading, and should be corrected. The gonopods of the male probably represent 

 the styli borne at the tips of the dorsal valvula.' of the ovipositor of the im- 

 mature females of certain roaches, phasmids, grylloblattids, etc., (or the adults 

 of certain sawflies, Odonata, etc.), rather than the dorsal valvule themselves, 

 and it is, therefore, more exact to state that the gonopods of the male correspond 

 to the valvular styles of the female insect. The dorsal valvular of the ovipositor 

 of the female insect are probably modified "'coxites" (ovicoxites) corresponding 

 to the "coxites" of the gonopods (gonocoxites) of the male insect, and the 

 gonopods and styli doubtless represent exopodites, while the penis valves and 

 inner valvulae of the ovipositor probably represent endopodites of a pair of 

 limbs whose basal segments are represented by the ovicoxites in the female 

 (dorsal valvulse) or the gonocoxites in the male insect. 



It is possible that the penis valves of male ephemerids, sawflies, etc., (i. e., 

 the endopodites of a modified limb) do not strictly correspond to the phallic 

 lobes of male roaches, etc., since the latter may represent merely outgrowths 

 of the intersegmental membrane between the ninth and tenth sternal regions. 

 Furthermore, it is quite possible that the so-called surhami or hook-like processes 

 of the parapodial plates of certain roaches are merely modified processes of the 

 tenth tergite, which have become secondarily united with the parapodial plates. 

 This, and several other points of a similar nature, will be discussed more at 

 length in a later paper. 



Mailed April 4th, 1921 



