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XIX On Hawaiian Ophioninae (Hymenoptera, Fam. 

 ^ Ichneiimonidae). By R. C. L. Perkins, M.A., D.Sc, 

 F.E.S. 



[Read October 21st, 1914.] 



In 1883 two species of Ophionines were described as 

 belonging to the genus Ophion by Cameron, from four 

 examples sent to him by Blackburn from the Hawaiian 

 islands. These were treated as representing male and 

 female of each species. In 1912 Morley adopted the same 

 view as to the sexes. The four Blackburnian examples, 

 however, represent four quite distinct species. Blackburn 

 himself retained specimens that he considered identical 

 with those sent to Cameron for description, and these 

 specimens are now in my possession. The $ labelled 

 nigricans is the same species as Cameron's described ? and 

 the c? is identical with the c^ type. Of the other species, 

 Ophion lineatus, Cam., the ^ and ? retained by Blackburn 

 are correctly sexed and belong to the very distmct species 

 subsequently named Enicospilns molokaiensis by Ashmead. 

 Only the second example (not marked as the type) of 

 Cameron's pair belongs to this species. In the " Fauna 

 Hawaiiensis," vol. i, p. 341 et seq., Ashmead dealt with 

 all the known Hawaiian genera of Ophionmes and described 

 numerous species. He failed to recognise Cameron's 

 Ophion lineatus in the large collection that he examined 

 but identified as Ophion riigricans, Cam., a long series of 

 examples of a verv difEerent insect in no way related to 

 Cameron's. It is, of course, no wonder that Ashmead should 

 have failed to recognise Cameron's 0. lineatus, since it is 

 entirely misplaced generically, being an Enicospilus oi 

 Henicospilus, as some write it. On the other hand, his 

 treatment of Ophion nigricans is extraordinary. In his 

 " Classification of Genera of Ichneumons," published a year 

 before the " Fauna Hawaiiensis " referred to above, and with 

 the material collected by me before him, containing a 

 great series of his 0. nigricans, he constructed a new genus 

 Pleuroneurophion for this same nigricans, on a single 

 specimen collected by Koebele, while all the other examples 

 were considered identical with Cameron's Ophion. Ash- 



TRANS. ENT. SOC. LOND. 1914.— PARTS III, IV. (FEB.) 



