238 PROCEEDINGS OF THE ACADEMY OF [Vol. LXXIV 



is at hand to warrant our undertaking such a revision, it is clear 

 to us that the literature on the genus is in quite as great confusion 

 as that for the tropical American species of Neoconocephalus. In 

 that genus we were able to determine, from thorough study of the 

 North American forms found north of Mexico, based on ample 

 series, that a multitude of synonyms existed and that the range of 

 variation in the widely distributed and very plastic species was a 

 feature of the greatest importance, unknown or ignored by both 

 Redtenbacher and Karny. In the material of Euconocephalus, 

 now under consideration, eight species appear to be recognizable. 

 For these we have chosen the apparently best fitting names from 

 the long list and have been able to assign to synonymy a number 

 of the names there found. 



It is to be hoped that more truly revisionary work will be under- 

 taken and, should this be done, we are satisfied that the number 

 of species of Euconocephalus, placed at thirty-eight by Karny in 

 the "Genera Insectorum" (1912), will show very great reduction. 



Euconocephalus indicus (Redtenbacher) 



1891. Conocephalus indicus Redtenbacher, Verh. Zool.-bot. Ges. Wien, 

 XLI, p. 408. [cf, 9 : Himalaya [Mountains]; China; Birma; Penang, 

 [British Straits Settlements]; Borneo; Java; Sumatra; Peak Downs, 

 Australia.] 



Singapore, British Straits Settlements, (from C. F. Baker), 1 o 71 . 



In the present green specimen, the tegmina have a number of 



moderately large brown flecks distad. 



Euconocephalus picteti (Redtenbacher) 



1891. Conocephalus picteti Redtenbacher, Verh. Zool.-bot. Ges. Wien, XLI, 

 p. 410. [cf: Sumatra; Perak, Malacca.] 



Labuan, British North Borneo, 3 cf , 4 9 . 



In the present series the fastjgium of the vertex is rather blunt, 

 with proximal spine heavy. The tegmina do not have the costal 

 margin darkened. 



Length of body cf 26.5 to 27.5, 9 30 to 31.8; length of fastigium 

 of vertex o" 1.8 to 1.9, 9 1.8 to 2.1 ; length of pronotum rf 1 7 to 7.2, 

 9 7 to 7.3; length of tegmen <? 27.3 to 32.5, 9 31.7 to 38; length 

 of caudal femur cf 16.8 to 18.9, 9 19.7 to 21; length of ovipositor 

 16.3 to 19.2 mm. 

 Euconocephalus varius (Walker) 



1869. Conocephalus varius Walker, Cat. Dermapt. Saltat. Br. Mus., II, 



p. 320. [&, 9 : China; Hong Kong; Silhet.] 

 1869. Conocephalus turpis Walker, Cat. Dermapt. Saltat. Br. Mus., II, 



p. 323. [cf, 9 ; Philippine Islands.] 

 1874. Conocephalus thunbergi Stal, Recensio Orth., II, p. 109. [cf , Japan.] 



