50 



various species of Caenosia are well worth collecting, as there 

 must be many new species of these. Other still smaller and 

 more obscure Acalypterate muscids are numerous. They should 

 be collected in large numbers, as most of the individuals preserve 

 badly. 



ORTHOPTERA. 



The little native cockroach Phyllodroniia obtusata is extremely 

 common, but the two very distinct species of Brachymetopa in 

 the Locustidae are much more interesting. B. blackburni is 

 dimorphic, having a brownish or testaceous form with black 

 face, and a bright green form. The males are usually of the 

 testaceous form, the females green, but occasionally a brown 

 female or green male is found. Some of the green examples 

 have the face largely brownish, and thus resemble B. unica 

 superficially, but there are no true intermediate forms between 

 the two phases of blackburni. B. unica is a rare species, known 

 only as a green form, but a yellowish or brown one will probably 

 be discovered if a number of specimens be collected. It is a 

 most distinct species. 



In the Gryllidae Paratrigonidium yields several species, 

 saltator on Freycinetia, subroseum only on Ohia, pacificum ter- 

 restrial, and at least two other species, probably varians and 

 debile. Prognathogryllus stridulans is the species called Neso- 

 gryllus stridulans in the Fauna Hawaiiensis, the curious sexual 

 characters being formerly unknown. Leptogryllus nigrolineatus 

 is found at the base of leaves of Freycinetia, and fusconotatus in 

 exactly similar situations. 



NEUROPTERA. 



The Neuroptera are not well known at present; the Heme- 

 robiids Megalomus hospes and Nesomicromus vagus are common 

 and one other species, probably subochraceus . Anomalochrysa 

 deceptor, biseriata, proteus, and cognata have been taken, and 

 there are certainly others. 



Stray specimens of the dragon-fly Sympetrum blackburni are 

 occasionally seen, and of the great Anax strenuus, and the fol- 

 lowing Agrionines A. xanthomelas, hawaiiensef, nigra -hamatum, 

 deceptor, and oceanicum. All these are stragglers from neigh- 

 boring waters, but I noticed three of the five in one spot the 

 other day. A. asteliae, A. koelense, and A. oahuense all breed at 



