524 Mr, R. C. L. Perkins on Hawaiian Ophioninae. 



6. (7) Thorax wholly black (or at most a little reddish behind 



the head) ^ with the basal abdominal segment dark on the 

 basal portion,rarely wholly black, its apex (usually) as well 

 as the 2nd, 3rd, 4th and often the 5th segments rufous, the 

 apical segments black or blackish ; $ also with the inter- 

 mediate segments red, the hypopygium very strongly 

 exserted, so that in lateral view the abdomen becomes 

 extremely wide beyond the fifth dorsal segment. 



((^ $ with one distinct, but not large, chitinous spot in 

 the discocubital cell ; propodeum in the $ with a dis- 

 tinct transverse raised line or carina, sometimes as 

 strong in the (^, or totally absent in the latter sex; 

 carinae of scutellum seen from in front strongly con- 

 vergent behind ; antennae of ^ extending beyond the 

 tips of the spread wings for a distance as great as half 

 the wing-length.) E. kaalae, Ashm. 



7. (6) Coloration not as above ; hypopygium of $ not unusually 



prominent. 



8. (11) Discocubital cell with two very distinct chitinous spots and 



the thorax, as well as the legs, is conspicuously in part 

 or wholly pale, yellowish or ferruginous. If the thorax 

 and coxae are dark, then the scutellum is largely yellow 

 and the mesonotum has definite pale lateral markings. 



9. (10) Mesosternum and propodeum reddish or ferruginous, at 



most somewhat dusky or suffused with fuscous. 



E. hngicornis, Ashm. 



10. (9) Mesosternum and at least most of the propodeum black. 



E. tyrannus, P. 



11. (8) Discocubital cell with one chitinous spot or none; or if 



with two then the coloration of the insect is quite unlike 

 the preceding, or the second is so faint as to be scarcely 

 perceptible. 



12. (13) Thorax mostly yellow or yellowish, with a conspicuous 



median dark band on the mesonotum extending back 

 to the middle ; propodeum behind the transverse carina 

 largely or mostly black; legs entirely pale, yellowish 

 or testaceous; spot of the discocubital cell large, sub- 

 triangular or pyriform and continued all round the lower 

 margin of the glabrous area as a faint yellow streak. 



E. nigrolineatus, Ashm. 



13. (12) Insects without these characters. 



14. (15) Legs yellow as in nigrolineatus, but with the apical half (or 



nearly) of all the femora black; mesonotum with the 

 sutures and posterior part yellow, or pale. 



