392 



tomological Society. Paratypes in the eolleetioii of the 

 Hawaiian Sugar Planters' Association, and in the collections 

 of Mr. Timberlake and the author. 



29. OviPosiTsoN OF IscHiOGONus PALLiATCs (Blackbiiru ) . 



A lot of three females and males were bred from a larva 

 of FJagithmysus pulverulentus under the bark of Acacia 

 l-oa from Oahu brought in by Mr. Swezey. These emerged 

 about Juno 15, and were fed and seen to mate and were placed 

 with a branch of Euphorbia containing larvae of N eoclytarliis 

 and on July 7 four males and three females liad emerged. 

 These were placed with material containing larvae of Neocly- 

 tarlus. A female was seen ovipositing July 8, the oviposition 

 being similar to that of Heterospilus prosopidis, the ovipo- 

 sitor being grasped by the apical two-thirds of the sheaths, 

 the bases of the sheaths and ovipositor being ^yidely separated. 

 The sheaths are strongly bent and served to brace the ovi- 

 positor while in operation. The oviposition was^ nearly eoiu- 

 plete when noticed and no details further were observed. 



This species has been recorded by Dr. Perkins as attack- 

 ing the Plagithmysine beetles in the native forests. My ob- 

 servations show that these attacks are responsible for a very 

 heavy mortality among them, particularly in the case of species 

 iittacking thin-barked trees. 



30. Myemosula Bradley. 



Myrmosa parvula, Fox and M. rufiventris Blake were 

 originally included. The former may be considered the 

 type. Probably the group is better considered as generic. 



IVIyrmosula rufiventris (Blake). 



This species has apparently been represented in collections 

 by the unique type in the collection of the American Ento- 

 mological Society from Nevada. 



It is represented in the author's collection by a single 



