NEUROPTERA 71 



black tooth directed transversely and downwards as is easily seen in an apical view. 

 The strongly curved margin of the dilatation is dark, and inwardly, at about the middle 

 of the height of the appendage, gives rise to a distinct black spine or tubercle directed 

 upwards. Inferior appendages with acute black apices, and directed inwards and 

 upwards. 



Length of abdomen, 29 mm. ; post, wing, 18 "5 mm. ; expanse, 40 mm. 



Hab. Halemano, Oahu, above 2000 ft. A single <J taken in February, 1893. 



(13) Agrion calliphya M^Lachl. 



Agrioui?) calliphya M-^Lachl., Ann. Nat. Hist. (5) xii. 1883, p. 236 (<?). 



I have examined many examples of this species. The abdomen (^) of those from 

 Haleakala attains a length of 40 mm. and that of the largest examples from Lanai is 

 only a little shorter. In those from Molokai the length is about 35 mm., but some are 

 considerably shorter, as is also the case in some from Lanai. The number of cellules 

 between the quadrilateral and the nodus is variable, 3, 4, or 5, the number to some 

 extent apparently depending on the size of the individual. 



The % typically is very unlike the t in general appearance, the abdomen being 

 for the most part black, the base of segments 1 — 7 very narrowly pale or red and 

 (except on the first and second) with a red spot near the apex of each of these 

 segments. The three terminal segments are red in the middle, black at the sides. 

 Clypeus black on the basal portion, thoracic markings as in the ^. Posterior margin 

 of prothorax strongly raised and sinuate, its middle portion being strongly produced 

 posteriorly. Superior appendages dark, valvules and their appendages pale. (Plate V. 

 figs. 9 & 9 a.) 



Race niicrodenias, var. nov. 



Like the typical individuals in colour and form but of uniformly smaller size ; 

 length of abdomen about 30 mm. or less, posterior wing 19 mm. Usually 12 — 14 

 post-cubitals. Three cellules between the quadrilateral and the nodus. 



This dwarf form of the species is analogous to the race peles of A. amattrodytum, 

 which indeed is nearly always found with it. 



The colour of the ^ is somewhat variable, the darkest example has only the first 

 three and the last two segments of the abdomen red, while in others it is nearly entirely 

 this colour. I have several times taken the sexes coupled. 



Hab. Molokai, Maui and Lanai. Race inicrodemas, abundant on Hawaii. 



F. H. II. 10 



