750 



-hou (Greek Aetoi', a lion, ynasculine) e.g., Myrmeleoii^ Calli- 

 atoleoii, Gleiioleon, Dendroleo'n^ and many othei's. These must all 

 take 7nasculi7ie specific names. 



-plectron (Greek 7rX.7Ji<Tpov, a spur, neuter), e.g., Protoplectron. 



-clisis (Greek K\i(rfi, a bending, yemmme), e.g., Aca7ithaclisis. 



-ourus (correctly -ura, from Greek 017)01, a i-aiX, feminiiie), e.g., 

 Gleiiuriis, Macronemurus. As these have a masculine form, they 

 take masculine specific names. 



-leo (Latin leo, a lion, masculine), e.g., Formicaleo, Pseudo- 

 foi'inicaleo. 



It should also be noted that the correct family-name for the 

 Ant-lions is not Myrineleonidoi but MyrmeleontidcB. By the 

 International Rules, Art. 4, "the name of a family is formed by 

 adding the ending idee to the root of the name of its type-genus." 

 The root of Aecor is /VeoiT-; hence Myrineleontido'. Similarly we 

 should have the subfamilies Dendroleontince and Myrtneleo7iti7ue. 



EXPLANATION OF PLATE LVIII. 

 Fig. 1. — Traclieation of forewing-sheath of Myrmeleon uniaeriatus Gerst. , 



( X 19). [Compare Text-fig. 4]. 

 Fig.2. —Ditto, a portion much enlarged, ( x 50). [Compare Text-fig.5]. 

 Fig. 3. — Ditto, hind wing-sheath, ( x 19). [Compare Text-fig. 7]. 



(Postscript : added December 27th, 1915). — Since the above 

 was written, Mr. Esben Petersen has drawn my attention to the 

 fact that Navas has employed the term li7iea plicata for what, in 

 this paper, is designated the Banksia7i li7ie. Mr. Petersen is of 

 opinion that the term linea 'plicata is objectionable, and is un- 

 wilUng to accept it. I must here express my agreement with 

 Mr. Petersen on this point on the ground that the term "plicata" 

 in no way describes either the complex formation of this structure, 

 nor its final result, which, in its most highly developed form, is 

 a "linea recta." It is because I am strongly of opinion that no 

 single word or phrase can be coined, which will indicate the 

 peculiar structure of the Banksian line, that I have fallen back 

 upon a practice that is very generally observed in these difficult 

 cases in Biology, and named this line after one of our foi-emost 

 contemporary workers on the Neuroptera. 



