21 



I do uot at present know this Ceraphronid from any other 

 place in these islands but Honolulu. Dr. Perkins has a speci- 

 men collected several years ago. He also has a specimen among 

 some California insects. It has undoubtedly become introduced 

 here within recent years. 



Dr. Perkins has recently described this species as Ceraphron 

 abnormis. The description to be published elsewhere. 



Parapheluius xiphidii perkins. 



This little Chalcid is parasitic upon the eggs of Xiphidium 

 vanpenne Swezey, an introduced Locustid which has been 

 present in the Hawaiian Islands for at least 15 years. This 

 parasite on its eggs was discovered in 1905, and subsequent 

 observations shows that it is distributed throughout the islands. 

 Xiphidium eggs, wherever found, are largely parasitized by 

 this species. An account of its habits is given in Bull. H. S. 

 P. A. Div. Ent. I, Pt. 7, p. 214, 1905; description is given op. 

 cit. I, Pt. 8, p. 264, 1906. 



In February, 1908, among a lot of cocoons of Haplogonatopm 

 from which a hyperparasite (Ceraphronid) was breeding out, 

 were some parasitized by this Chalcid. About a dozen bred 

 out from one cocoon. As I had bred this Chalcid only from 

 the egg-s of Xiphidium previously, I was quite astonished at 

 now breeding it as a hyperparasite on a Dryinid. Examination 

 of remaining cocoons of this lot, revealed two which contained 

 dried up and blackened remains of the Haplogonatopus larva, 

 within which in one instance were 6 Paraphelinm pupae, and 

 in the other one were 8 Pamphelmus pupae. Further examina- 

 tion of cocoons collected from the field showed an occasional 

 one with either larvae or pupae of Paraphelinus. Xiphidium 

 eggs parasitized by Paraphelinus were found in the same field. 



An experiment was conducted as follows: Several adult 

 Paraphelimis which had bred from Haplogonatopus cocoons 

 were placed with Xiphidium eggs. In these they w^ere observed 

 to oviposit, and in 28 to 30 days the adults emerged. Some of 

 the latter were then placed with cocoons of Haplogonatopus, in 

 some of which they oviposited, and adults emerged in the usual 

 time. 



