1875.] 248 



dilated and forniiug two angles near the goiiital organs. The po.sterior dorsal spot 

 T-shaped, Tvith the upper line of the T broadly lunate, and the tail thickened. 

 The iijiper-side of segments 3 — 6 with a black posterior spot analogous to those of 

 cyathigenim, but broader laterally, in form of terminal rings touching the ventral 

 suture, which is broadly black ; these spots include (against the posterior articulation) 

 a blue mark, and are somewhat notched near the ventral suture on the 5th and 6th 

 segments, whereas, on tlie 3i'd and 4th they arc prolonged into a fine line towards the 

 base along the ventral side. (4) Anal appendages analogous ; but tlie superior (half 

 as long as the 10th segment) thicker when viewed from above, because the point 

 which exists in cyatJiigerum before the apex is here transformed into a little plate, 

 almost square, inclined downward, one directed against the other, almost as in ebrium, 

 but smaller ; viewed laterally these appendages are thick, as long as the lOtli seg- 

 ment, yellow, black at the point, slightly tliicker and more erect than in cyathigerum. 

 $ . The ground colour is pale reddish, the spino of the 8th segment long. It 

 differs from cyathigerum as follows: — (1, 2, 3, see the description of the $) ; (4) 

 The second segment lias no black baud, but a simple dorsal posterior spot, almost as 

 in the ^ , lanceolate anteriorly ; the bronzy spots less extended above on the 3rd to 

 6th segments, not commencing till after the 1st quarter, where they are pointed, and 

 then suddenly dilated in the last tliird (as in the $). 



N.B. — The two sexes differ from all the allied species by the 

 oblique black line on the sides of the Ist segment, thus resembling 

 A(jrion conciniium. (This line is found in ^. rohustum, n. sp., from 

 California, of which I know only the $ , but this is allied to durum, 

 having four ante-nodal cellules, and not three as in all the other 

 species). The ^J is also unique in the sub-genus by the black ventral 

 band of the second segment, and the ? by that segment having only a 

 einiplo hastate dorsal spot, and by the eighth segment being pale rod. 

 By the internal plate-like internal dilatation of the superior appendages 

 it approaches ebrium, but in tliis latter the inferior appendages are 

 equal to the superior, and the coloration of the abdomen is quite 

 different. 



Liege : February, 1875. 



[Note. — The materials from which this paper has been drawn up 

 were coUected in various parts of Newfoundland by my young friend 

 Mr. John Milne, F.G.S., wlio has spent two sumnicrs and atitumns in 

 Newfoundland. Before starting on his last expedition I urged him to 

 collect any insects he might find, believing that less is known of the 

 entomology of Newfoundland than of any other British colony. He 

 brought an extensive miscellaneous assemblage in all orders, but prin- 

 cipally Lcpidoptcra. The few individuals in other groups of Neuro- 

 ptera are scarcely worth noticing at present ; but there was a very line 

 ^ specimen of Ncuronia postica, Hag. — E. McLaciilan.] 



