66 Annals Entomological Society of America [Vol. IV, 



sylvestris, G. campestris and G. domesticus, and they differ 

 very markedly from one another. Oecanthis fasciatus Fitch 

 and O. quadripunctatus Beut. are the same species as gradations 

 in the antennal markings show very nicely when one has consid- 

 erable material. Whether the spermatophores further verify 

 this, I have not as yet been able to definitely determine but it 

 appears to me that the spermatophores of insects are worthy 

 of considerable more attention than has been devoted to them 

 in the past. 



EXPLANATION OF PLATE V. 

 All figures magnified, 3 and 4 highly. 

 Fig. 1. Attachment of spermatophore to female Gryllus pennsylvanicus. A, bulb 



of spermatophore; B, Sth abdominal sternite; C, ovipositor. 

 Fig. 2. Spermatophore of G. pennsylvanicus, magnified. A, bulb; B. handle; 



C, thread-like part (Lespes "file come"); D, duct; E, cross-section 



shown in Fig. 3; F, cross-section shown in Fig. 4. 

 Figs. 3 and 4. Cross-sections of thread at E and F in Fig. 2. A, gelatinous 



outside wall; B, hard core; C, duct. 



