1S94.] 173 



The plant is Australian and Tasmanian ; doubtless, therefore, the 

 insect may have also come from thence. I have not seen a specimen 

 on any other tree in the same garden or elsewhere. 



The venation of the wings and other characters fix this species in 

 the genus Psylla. But after close study of all the species mentioned 

 by Low, Scott and Eiley, and comparison with more than twenty 

 species in my own collection, I cannot find any which exhibit the same 

 markings in the cells of the fore- wing. Psylla rhois, Low, P. limbata, 

 Meyer-Diir, Pachypsylla venusta, Eiley, come near it, but differ quite 

 sufficiently in many particulars. Nor does it seem to be any of the 

 species reported by Dobson (Proc. Eoy. Soc. Tasmania, 1850). 



Wellington, New Zealand. 



PALPAItES WALKERI, A REMARKABLE NEW SPECIES OF 

 MTEMELEONIDJE FROM ADEN. 



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



On the voyage home from his late extended period of foreign 

 service, Mr. J. J. Walker, R-N., E.L.S., had the opportunity of part 

 of a day's (June 18th, 1893) collecting at Aden, and with his un- 

 varying skill contrived to turn such an unpromising locality to good 

 account. x\mongst his captures were two males of a highly remarkable 

 Ant-Lion, which I describe as under : — 



Palpares Walkeei, n. sp. 

 Head above yellowish- white, with indications of a dusky median spot posteriorly 

 (but without distinct band) ; much swollen, and with a deep median longitudinal 

 sulcus ; a narrow transverse black band (in which the antennae are placed) connects 

 the eyes ; face whitish-yellow, tips of mandibles dark piceous. Palpi dark piceous, 

 the labial very long. Antennee longer than the mesothorax, black, gradually 

 clavate, the apex very acute. Thorax above whitish-yellow, with three black longi- 

 tudinal bands, viz., one median, and one on either side (on the mesonotum these 

 bands become confused and divided, and are still more vague on the metanotum) ; 

 pronotum transverse, the fore and hind margins much raised, the former with a 

 fringe of cinereous hairs directed forward, the latter with long erect blackish hairs 

 and a fringe of cinereous directed backwards, between the raised fore and hind 

 margins is a transverse elevated ridge : meso- and metanota clothed with cinereous 

 hairs slightly mixed with blackish : sides of thorax, and beneath, blackish, with a 

 short clothing of cinereous hairs. Legs black, and somewhat shining, with short 

 cinereous and longer blackish hairs ; tibial spurs and tarsal claws dark rcddish- 

 piceous. Abdomen comparatively short, stout, piceous or flavescent above to end of 

 4th segment, then passing into blackish and blackish beneath (ha one example, 

 probably more mature, the abdomen is wholly black) ; there is a short, sparse, cine- 

 reous clothing, longer at the base : the posterior margin of the last dorsal segment 



