374 The Philippine Journal of Science 1923 



another. Distant does not mention the sex of the specimens 

 described and gives no diagnostic structural characters. 



The position of the ocelli in this family varies, from points 

 on the crown in front of the eyes and near the margin to points 

 on or below the anterior margin of crown, but always accom- 

 panied by peculiar and characteristic surrounding structures 



and this in forms which in all other characters show the closest 

 relationships, thus breaking down entirely the ancient definition 

 of jassoid families based on position of ocelli alone. Such wide 

 difference in position of ocelli is more apparent than real, since 

 the relation of the ocelli to certain fundamental characters of 

 head structure in this family is very much the same in all. The 

 former lack of understanding of the Acocephalini, Hecalusaria, 

 and many other jassoid groups has been due to neglect to examine 

 the position of the ocellus as related to the course of the frontal 

 sutures and the morphological limits of the true vertex where 

 these can be identified. 



It seems quite possible that some of the genera recently de- 

 scribed 23 as eupterygids do not belong in that group, but will 

 find their nearest relationships with this family; for instance, 

 Bolanus, Bolanwsoides, Camulus, and Augulus. Distant does not 

 even mention the ocelli in any of these and does not mention wing 

 venation, which is the basis of the present classification for the 

 Eupterygidae. His genus Anomiana belongs in the Balcluthini, 

 and ChickkabalULpura, Paivanana, and Empoascanara are 

 perhaps not eupterygids. 



It seems quite probable that the genus Mohunia Distant" 

 belongs to this family, judging from the face, form of vertex, and 

 venation. For this genus, also, the position of ocelli is not de- 

 scribed. 



Atritona Melichar « is a good member of this family, but the 

 structures surrounding the ocellus are not described; nor is the 

 apical venation of tegmina, which would probably be distinguish- 

 able by transmitted light. The form of the head is unique. The 

 genus was described from East Africa. 



Likewise Hodoedocus Jacoby, » with Kosasia Distant 29 as a 

 synonym, »« is apparently a member of this family, judging 



25 Fauna Brit. India, Rhynch. 7 (1918) 



M Op. cit. 4 (1908) 272. 



"Acta Soc. Ent. Bohem. 11 (1914) 6 



"^^^^^'"o-Meru Expedition Stockholm 12 < (1910) 126. 



*auna Transvaal. 1 (1910) 240. 

 30 Fide Melichar, loc. cit. 



