1887.] 31 



then it is probable that the examples of all the other species in my 

 collection are $ . In these the abdomen is stouter, and the parts I 

 have termed "superior appendages " are somewhat similar, but they 

 are closely applied to large, triangular, obtuse, inferior lateral plates, 

 of which I see no indications in the specimens of Mcyricki. This is 

 a point to be elucidated, as are also the early stages and habits of 

 Psychopsis, which is a purely Australian genus, and one of the most 

 curious amongst the Planipeiuiia. 



Five species of Psychopsis are now known, viz. : — P. mimica, 

 Newm., elegans, Guerin, ccelivaga, "Walker, insolens, McLach., and 

 Meyriclci, McLach. 



Lewisham, London : June, 1887. 



NOTHOLESTES ELWESI, A NEW GENUS AND SPECIES OF 



CAL OPTER YQINA. 



BY ROBERT McLACHLAN, F.R.S., &c. 



NoTHOLESTES, 11. g. 



Resembling a large Lestes in form, stature, and coloration. 



Wings rather narrow, hyaline, petiolated up to three-fourths (or 

 four-fifths) of the basal area. Nodus at about the end of the first 

 third of the wing. Basal area empty ; quadi'ilateral traversed by a 

 single nervule. Sectors of the arculus only slightly separated at their 

 base, inserted rather below the middle of the arculus, which is not 

 broken. Principal sector connected with the median for a long space. 

 Ante-cubital nervules numerous. Sector inferior extending to beyond 

 middle of wing. Post-costal area very narrow, not dilated at end, 

 with a single row of cellules. Supplementary sectors between each of 

 the chief nervures, all ending in a curved manner. Pterostigma 

 oblong, slightly dilated. 



Legs slender, moderate, ciliations very long. Abdomen long and 

 slender, cylindrical ; appendices ( cj ) forcipate. 



It appears to me that in general characters this genus is more 

 nearly allied to the Amazonian Dicterias than to others of the same 

 group from India, but it can be immediately separated therefrom by 

 the very long ciliation of the legs, and the far more numerous and 

 curved supplementary sectors in the apical portion of the wings, &c. 

 No doubt there is also relationship with the Indian Bayadera, but the 

 very narrow post-costal area, with only a single row of cellules, at 

 once separates it therefrom, notwithstanding that the legs and many 

 points of neuration are similar. Anisoneura from the same country 

 differs in the post-costal area, and in the principal sector not being 

 contiguous to (or connected with) the median. 



