Mr. R. C. L. Perkins on Hawaiian Ofhioninae. 533 



or distinct in examples of a single species, and varying in 

 form. 



Very useful and comparatively constant characters in some of the 

 most difficult species are found in the shape of the head, length of 

 the cheeks and of the antennae, and in the sculpture and form of 

 the dorsal surface of the raised scutellum. 



Cameron's typical specimens, now in the British Museum, need 

 to be carefully relaxed and cleaned, two of them indeed are in a 

 mutilated or fragmentary condition, and but for the fact that they 

 are the types, all would be better discarded from a collection. 



Pleuroneuwphion ferrvgineus, sp. nov. 



Colour ferruginous (like normal Enicospilus molokaiensis) only 

 the apical joints of the tarsi, mandibular teeth, etc. , dark. Mesonotum 

 not shining, hardly visibly sculptured, the scutellum with excessively 

 minute surface rugulosity. Propodeum with short white hairs, 

 finely rugulose, without a transverse carina. Neuration dark, wings 

 with yellowish tinge. Size of P. haurniensis. 



Hah. Maui, Haleakala. Probably common, as it would 

 be overlooked for the excessively abundant Enicospilus 

 molokaiensis by any one not wanting the latter. 



The following is a list of all the Hawaiian species of 

 Enicospilus as here described, with synonymy and localities, 

 as at present known. I am only able to use the localities 

 given by Ashmead when I have seen the actual specimens. 

 No doubt many of the species either in typical form or as 

 slight varieties have a wider distribution than that given. 



1. E. molokaiensis, Ashm. Common on all the islands. 



2. E. melanochromus, sp. nov. Maui. 



3. E. kaalae, Ashm. Kauai and Oahu. 



{^=seminffus, Perkins.) 



4. E. longicornis, Ashm. Hawaii. 



5. E. tyrannus, Perkins. Molokai. 



6. E. nigrolineatus, Ashm. All the islands. 



7. E. variegatus, Ashm. Hawaii. 



8. E. bellator, Perkins. Hawaii, Molokai and Oahu 



and probably the other islands. 



9. E. funereus, s]^. nov. Maui. 



10. E. ivaimeae, Ashm. Kauai and (sec. Ashmead) 

 Hawaii. 



