226 Mr. R. MeLachlan on the 
directed upwards. Gular scales very feebly keeled. A light 
band bordering the upper lip; a light band along each side 
of the back. 
Two specimens from Port Essington. 
4. Lophognathus maculilabris, sp. n. 
Snout not longer than the distance between the orbit and 
the posterior border of the ear. Nostril equally distant from 
the orbit and the tip of the snout. Dorsal scales all obliquely 
directed upwards. Gular scales strongly keeled. An irre- 
gular light band from below the eye to the shoulder; lips and 
lower surfaces maculated with blackish. 
Two specimens from the Timor Laut Islands. 
XXVII.—Neuroptera of the Hawatian Islands.—Part I. 
Pseudo-Neuroptera. By Ropert McLAcutian, F.R.S. &e. 
In this and in the paper on Neuroptera-Planipennia that will 
follow it I propose*to give the results of the working-out of 
two small collections formed by the Rev. Thomas Blackburn 
in the islands, combined with such information as had been 
previously obtained from a few species taken by Mr. G. F. 
Mathew, R.N., a few existing in the British Museum from _ 
the results of Captain Beechey’s voyage, and some other 
sources. As Mr. Blackburn has now left the islands, after a 
residence in them of several years, it may be some time before 
another opportunity occurs for a still further examination of 
their insect productions. 
A general summary will appear with Part IL. of this paper. 
In Part I. seventeen species are considered, viz. two of Ter- 
mitide, one of Embide, two of Psocide, and twelve of Odo- 
nata (or dragonflies). The Hphemeride and Perlide are 
not represented ; but I cannot believe they are totally absent. 
The two ‘Termitide are probable importations from 
America; so also may be the single species of Embide. Of 
the Psocide one is probably endemic, the other may be an 
introduction from America (but the materials are too small). 
Of the dragonflies (Odonata), one is nearly cosmopolitan ; 
two others are North-American species of powerful flight, and 
probably endowed with migratory instincts ; one rather large 
species of Libellulina is apparently endemic; the Agrionina 
are no doubt strictly endemic, and form the most interesting 
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