218 Journal New York Entomological Society. [VoL xxvi. 



each of which is a two-segmented structure, of which the basal part 

 is a hard, narrow, long plate, ciliate at the margin and bearing a 

 minute, terminal, freely-articulated segment. 



The alimentary canal terminates just al)ove the base of these 

 vaginal plates, so that just above the anus is the termination of the 

 genital tube, there being nothing between the two orifices but a little 

 membrane. The genital orifice is membranous, ample, and proceed- 

 ing forwards very soon divides into two branches, one of which is 

 soon strongly elbowed, and then narrows to form a spiral duct that 

 bears the spermatheca; this is of very remarkable and unusual form, 

 a bent, long tube, with a round head ; the duct enters close to the 

 head, and at the same place there is connection with a rather long, 

 tubular gland. 



Explanation of Plate X. 

 (AH of the male.) 



Fig. I. Profile of abdomen. 



Fig. 2. Ventral aspect of last segment. 



Fig. 3. Connection of dorsal and ventral plates of last segment (dia- 

 grammatic) . 



Fig. 4. Terminal portion of genital tube. 



Fig. 5. Last ventral plate, spiculum and terminal portion of genital tube. 



Fig. 6. ^deagus as extracted, in contracted state. 



Fig. 7. Internal sac ; appro.ximation to its functional condition of ex- 

 tension : dorsal aspect. 



The lettering is uniform throughout, viz. : Numerals, i-S, dorsal sclerites 

 of abdomen; I-VIII, ventral sclerites. 



Letters, a, strut of last \entral ; b, anus; on i, first connecting membrane; 

 ej, duct from the testes ; /. fork of speculum ; fl, flagellum ; is, sac ; "(/, median 

 lobe ; ms, median lobe struts ; s, spiracle ; sp. spiculum ; t. tegmen ; ts. strut of 

 tegmen ; .\\ chitin rod at termination of genital tube. 



NEW NORTH AMERICAN SPECIES OF APION. 



By H. C. Fall, 



Tyng-sboro, Mass. , 



Specimens of an Apion bred from galls on Hibiscus mosclieutos 

 at Arlington, N. J., have recently been sent me for identification by 

 Mr. H. B. Weiss. An examination shows that they can not be re- 



