Mr. R. C. L, Perkins on Hawaiian Ophioninae. 523 



caterpillars of Deilephila blackburni was once found on 

 the dry fore-hills behind Honolulu, all of them parasitised 

 by what, no doubt, was a species of Enicospilus, though 

 the insects were not bred. 



The following table of species has been prepared after 

 the examination of a very large amount of material, in- 

 cluding the type set of specimens contained in the British 

 Museum. Excepting very abnormal aberrations, I believe 

 all the species known to me may be distinguished by it, and 

 characters that are either noteworthy for their variation 

 or of use for specific separation are added in brackets. 



Table of Species of Enicospilus. 



1. (30) First or basal abscissa of radius generally notably thickened 



between the base and middle, and a glabrous area always 

 present beneath the basal part of the radius ; mesonotum 

 normally convex. 



2. (5) First recurrent nervure forming a distinct angle at its 



meeting with the cubitus, and usually a little thickened 

 or prominent at that point ; hypopygium in the 9 very 

 strongly prominent. 



3. (4) General colour yellowish or reddish ferruginous, varying 



in depth ; stigma largely yellow or testaceous ; chitinous 

 spot in the discocubital cell always well developed, 

 pyriform or with an apical prolongation. 



(Size very variable, $ from 12 to 19 mm. ; transverse 

 median nervure of front wings interstitial with the 

 basal or not far separated from it.) 



E. molokaiensis, Ashm. 



4. (3) Thorax and abdomen almost wholly black or dark fuscous, 



the legs also dark, except some of the tarsi ; stigma dark. 

 (Mesonotum rather distinctly shining, more or less 

 rufescent at the sides in front; scutellum very finely 

 and not closely punctured ; propodeum much smoother 

 in front than behind, and without a transverse carina ; 

 wings smoky-hyaline except the clear glabrous area; 

 3rd and 4th abdominal segments brownish -tinged ; 

 chitinous spot of discocubital cell pyriform.) 



E. melanochromus, sp. nov. 



5. (2) First recurrent nervure forming a simple curve with the 



cubitus and not angulate ; hypopygium of $ only strongly 

 prominent in the next following species {kaalae, Ashm.) 



