52 Psyche [June 



Raphidia (Fig. 16) does not seem to be very like any of the other 

 Neuroptera here figured so far as its terminal structures are con- 

 cerned. It has an arched dorsal plate "sa" which may represent 

 the supraanal plate, or epiproct, beneath which are two processes 

 "g," provisionally homologized with the gonopods "g" of Fig. 

 10, etc. The two penis hooks "pu" of Raphidia (Fig. 16) are 

 apparently homologous with the structures labeled "pu" in Fig. 5 

 of Mantispa, and the median hook "mu" of Fig. 16, is possibly 

 homologous with the median hook "mu" of Fig. 5, although I am 

 somewhat at a loss to account for the homologies of the structure 

 "mu" of Figs. 5 and 16, in other forms. 



The Coniopterygidse (Fig. 11) are too small and highly specialized 

 for one to be able to make very much out of a study of their parts. 

 The hypandrium "hy," of Fig. 11, is comparative! 3^ well developed, 

 and the structures labeled "pu" appear to represent the penis 

 hooks "pu" of the other Neuroptera. The terminal structures of 

 the Coniopterygidfe appear to resemble those of the Planipennia, 

 as much as any other Neuroptera. 



Turning next to the consideration of the genitalia and terminalia 

 of the Mecoptera, we find two types represented, namely, those with 

 forceps-like gonopods {e. g.. Figs. 24, 20, 23, 27, and 28) which are 

 of extreme length in Merope (Fig. 24 "g"), and a second type 

 represented by the Bittacus-group (Figs. 18 and 22) in which the 

 gonopods are not developed in the form of forceps-like structures. 

 In Vol. 27, page 298 of the Entomological Neics for July, 1916, I 

 suggested that the Merope type of Mecoptera represented a sub- 

 order called the "Pro mecoptera," in which the wings present a 

 very primitive venation, the head is not greatly elongated, etc. 

 Merope, however, is quite closely allied to the other members of 

 the Panorpa-growp, and should be incliK.od in it, so that there 

 are but two principal groups of living Mecoptera (the Bittacus- 

 type and the Panorpa-iype) and these two might be considered as 

 representing two suborders of the Mecoptera, although they are 

 more probably of merely superfamily rank. Tillyard, 1917 

 (Proc. Linn. Soc. N. S. Wales, 42, p. 188), applies the term Pro- 

 tomecoptera to a new order of fossil insects which in certain re- 

 spects resemble the ancestors of living Mecoptera. 



Although I feel certain that such forms exist, I have been unable 

 to find any Neuroptera in which the gonopods are in the form of 



