130 [June, 



THAUMATOXEURA I NO PIN ATA, A NEW GENUS AND SPECIES 

 OF CALOPTERYQINM. 



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



At the recent sale of the collections formed by the late Mr. 

 Reginald Chohnondeley, of Condover Hall, Shrewsbury, I obtained 

 the few Odonafa, solely on account of a large Calopterygine, which 

 was evidently something unknown, but the remarkable nature of which 

 1 did not fully realize until after it came into my possession. 



The former owner of the collection valued insects, and other 

 natural productions, solely for their beauty or forms, and cared little 

 for names, and nothing for localities, so I am unable to say whence 

 this specimen came ; but as the pin (or rather skewer!) was similar to 

 those used for some other insects in the same collection which were 

 Chinese or Japanese in origin, 1 hazard a conjecture that it may 

 belong to the same region. 



THAUMATONEUEA, n. g. 



Head* broad ; eyes large, globose, very prominent. Thorax robust. Legs 

 moderate (only the anterior present). Abdomen slender, cylindrical (the apical 

 portion absent). Wings elongate, broad, ohtase, petiolated at the base to beyond the 

 1st nervule in the lower basal area ; afterwards the inner margin is gradually 

 rounded to before the middle (more so in the posterior), and then slightly sinuate 

 to before the apex. Nodus placed near the base, at about one-fifth of the length of 

 the wing. Pterostigma large, dilated beneath, its inner edge very oblique, so that the 

 lower edge is much longer than the upper. Only three to five ante-nodal nervules, of 

 which only the first two are continued below the subcosta. Post-nodals very numerous. 

 Post-stigmatical area densely reticulated. Upper basal area empty, the lower unth 

 two nervules. Quadrilateral regular, oblong, empty, slightly more than half the 

 length of the upper basal area. Arculus angulated, its sectors separated at the base, 

 the lower arising from about its middle, the upper slightly above. Nodal sector 

 arising at about the middle of the length of the wing ; sub-nodal at about the nodal 

 point ; the median befoi-e the nodus. Post-costal area very broad, much dilated 

 before its extremity, owing to the arching of the second sector of the triangle, with 

 many branches. Reticulation dense, especially on the inner margin ; two to four 

 long supplementary sectors interposed between each sector ; all the sectors (including 

 the supplementary and the branches in the post-costal area) strongly curved at their 

 ends. 



The insect on which this genus is founded has the aspect of a 

 gigantic EupJicea, of the broad-winged group. There can be little 

 doubt that it belongs to the Legion AmpJiipteryx of De Selys, and is 

 perhaps most nearly allied to the genus AmpJiipteryx ; but it differs 



The bead has been detached, but apparently belongs to the insect. 



