SOME NEW OAHUAN (HAWAITAN) HEMIPTERA. 175 



riorly and down to the shore, are patches and stretches of Sida, 

 &c., where the lantana and mimosa permit them to grow. How- 

 ever, in this coast region one finds Ithamar hawaiiensis, Opuna 

 hawaiicnsis, &c., as well as some of the forms now described. 

 Although all these coast forms are so far not known outside the 

 Hawaiian Islands, it is possible that some may yet be found on 

 the coast-line among the short-lived spring vegetation in some 

 of the southern Polynesian Islands. 



Collecting on the mountains often has to be restricted to the 

 knife-like ridges, the sides being almost impassable ; in a few, 

 such as the ridge from the Pacific heights to Konahuanui, there 

 is a rough trail. Occasionally one sees a pair of the glorious 

 Pyrameis tammeamea coquetting around the top branches of a 

 koa-tree, or in brushing through the tree-ferns one disturbs a 

 nest of hornets {Polistes hebraus. Fabr.) ; but usually insects 

 have to be closely looked for or beaten out of the trees. Sweeping 

 is of no avail, as there are almost no autochthonous species 

 feeding on low-lying plants, and, indeed, there are scarcely any 

 low-lying autochthones on the mountains. 



For the present, the reader may profitably consult " Mr. 

 Blackburn's resume of his Journeys and Collecting in the Archi- 

 pelago " (1885, Sci. Trans. Pt. Dublin Soc. (ii.) iii. pp. 197-208) ; 

 soon, however, there will appear the Introduction to the ' Fauna 

 Hawaiiensis,' in which all these matters will be fully discussed. 



The genera and species now described are (*=new) : — 



Fam. Fulgoridee, subf. Asiracin?e. 



Peregrinus* maidis (Ashmead). 



Mef/amelus leahi.* 



Aloha ipomoece.^ 

 Fam. Tetigoniidae subf. Jassinae. 



Deltocephalus Jiospes* 



Eutettix j)erkinsi.* 

 Fam. Miridae subf. Mirinse. 



Halticus chrysolepis.* 



It is hoped that all these will be described in detail, and 

 figured in the ' Fauna Hawaiiensis.' 



Pekegrinus, gen. nov. 



Belongs to the section with short first segment of antennae, 

 and with lateral keels of pronotum not outwardly deflected, but 

 reaching posterior margin. Somewhat allied to Megamelus, 

 Fieber, but distinguished by the more rounded head, much larger 

 and differently formed pronotum, difterent tegminal venation, 

 &c. Somewhat like Eueides {■= Enides, Fieber, preoccupied), 

 but distinguished by the different form of the keel of the pro- 

 notum. 



q2 



