1922] NATURAL SCIENCES OF PHILADELPHIA 239 



Los Banos, Laguna, Luzon, Philippine Islands, (from C. F. 

 Baker), 1 cf , 1 9, (cf brown, 9 green). 



Than-Moi, Tonkin, June and July, (from H. Fruhstorfer), 1 cf , 

 (green) . 



After careful consideration of the literature and the material at 

 hand, we believe the synonymy, indicated above, to be correct. 

 Comparison of the present material, as well as a large series of this 

 species from Japan, the Loo Choo and Bonin Islands, with a series, 

 recognized by us as referable to E. pallidus (Redtenbacher) and so 

 recorded in the present paper, shows that the latter insect is ex- 

 ceedingly close in relationship. The phylum under consideration 

 is clearly subject to great specific individual variation and the 

 nomenclature is in a chaotic state. 



For the present, we believe varius to be separable from pallidus 

 by the average slightly greater fastigial length (though often the 

 same in individuals of the two), by the proportionately shorter 

 caudal femora and average decidedly shorter ovipositor, which 

 very rarely exceeds the caudal femur in length and is usually dis- 

 tinctly shorter. The form, general structure and markings are, 

 in these insects, the same. 



Length of body 80 cf 33 and 35, 9 34.5; length of fastigium of 

 vertex cf 2.6 and 2.5, 9 2.4; length of pronotum cf 8.8 and 9, 

 9 8.3; length of tegmen cf 38.7 and 41, 9 46.7; length of caudal 

 femur cf 21 and 22, 9 22.8; length of ovipositor 24.8 mm. 81 



Euconocephalus pallidus (Redtenbacher) 



1891. Conccephalus pallidus Redtenbacher, Verh. Zool.-bot. Ges. Wien, 

 XLI, p. 414. [cf, 9: East Indies; Silhet, [Assam]; Calcutta, [India]; 

 Ceylon; Birma; Tonkin; Penang and Singapore, [British Straits Settle- 

 ments]; Java; Borneo; Philippines.] 



Los Banos, Laguna, Luzon, Philippine Islands, (from C. F. 

 Baker), 1 cf , (green). 



Mount Makiling, Luzon, Philippine Islands, (from C. F. Baker), 

 2d 1 , (brown). 



Mount Limay, Luzon, Philippine Islands, (from C. F. Baker), 

 1 cf , (brown). 



Iligan, Mindanao, Philippine Islands, (from C. F. Baker), 1 9, 

 (brown). 



80 The measurements of the Tonkinese male are given last. 



81 We feel obliged to assign this specimen to varius, though in ovipositor length 

 it agrees instead with the normal for pallidus. This is the only case in the large 

 series of females of varius before us, in which the length of the caudal femur is 

 exceeded by that of the ovipositor. 



