146 PROC. ENT. SOC. WASH., VOL. 21, NO. 6, JUNE, 1919 



applied to the parts of the genitalia, I have substituted the designa- 

 tions gonocardo, and gonostipes, and have retained the alternate 

 term volsella (in place of lacinia). It should be borne in mind, 

 however, that the designation "stipes" is usually applied to the 

 entire arm of the "outer forceps" (i. e., the gonopods) in higher 

 Hymenoptera, instead of being restricted to the basal segment of 

 the arm of the "outer forceps," as is the case with the designation 

 "gonostipes." 



The term sagittae is a very appropriate one for the copulatory 

 ossicles "gl," and I have provisionally adopted this designation 

 for these ossicles, in the present paper, although a subsequent 

 study, with material not at present available to me, may indicate 

 that these ossicles are not homologous with the sagittae of higher 

 Hymenoptera. They were called "gonossiculi" in a former paper. 

 In Mr. Rohwer's table, both the ossicles "gl," and the sclerites 

 "pal" are grouped under the designation sagittae, and Enslin, 

 1912, in his Fig. 15 of the genitalia of Sir ex, considers them as 

 merely parts of the "innere Haltezang" (or inner forceps). The 

 two, however, are distinct structures, and I have therefore re- 

 stricted the designation sagittae to the ossicles "gl" alone, and I 

 have designated the sclerites "pal" (all figures) as the "volsellae," 

 provisionally homologizing them with the parts called volsellae 

 or "laciniae" in higher Hymenoptera, although subsequent in- 

 vestigations may indicate that this interpretation is not entirely 

 correct. The sclerites "pal" were formerly termed the "parossi- 

 culi." 



The term "penis" has been retained for the structure formed 

 by the penis valves "pv," in the present paper, since this term is 

 applied to the median structure in higher Hymenoptera as well; 

 although I am not certain that what Mr. Rohwer designates as 

 the penis in sawflies is really the penis, or a sheath enclosing the 

 true penis. The material at present available, however, is not 

 sufficiently well preserved to determine whether the delicate 

 structure occurring within the penis valves of many sawflies is a 

 true penis, or merely the coagulated seminal fluid, and until this 

 point has been definitely determined, I have provisionally ac- 

 cepted Mr. Rohwer's interpretation of the structure formed by 

 the penis valves, as the penis. 



The following table will serve to briefly summarize the views 

 here expressed regarding the conpositiom of the genital apparatus 

 of male sawflies, and the terms applied to its parts. 



