140 Mr. G. J. ArroTv 



on 



anteunal club characteristic of Amblyopns, wliilst others 

 associated with it by Gorham have small, finely facetted eyes 

 and very short, broad, and closely articulated club-joints, as 

 in Petaloscclis. It is true that they all aj^ree in inhabiting 

 Africa, but, in spite of that, their structural diversity pre- 

 cludes their association in a sin<ile genus. 



The ty])e of Pctuloscelis is a Burmese insect, P. histahilis, 

 Gorh. Kulmt has joined with it a very difterent species, 

 JCrotylus rufjcns, Hope, although I had already stated that 

 to be a Neotriplax. With P. instubiiis " Amblyscehs ^' 

 pnUldus and iKemorrhous of Gorham may be associated, 

 and A. kelleni and brunnens, Gorh. (and perhaps A. gorhaini, 

 (iestro), are synonyms of the last. Another species is 

 '' Zijthoniu'^ anthracina. Gorh., incompi'ehensibly referred 

 to a genus to which it has no resemblance. Equally mys- 

 terious is Gorham's simultaneous redescription of the true 

 Zythonia (Z. fulva^ Westw.), a striking and unmistakable 

 insect, as LophocrotapJins guluerasis. 



To the genus Ambhjopus I refer ''^ Amblyscelis" ferru- 

 gineus and vittipeun'is, Gorh., the latter name, as well as 

 Triplax dorsa/is, Kolbe, being synonymous with Triplax 

 marginota, Qued. A. mgr'ipennis, Arr., I am now satisfied 

 is the same as Amblyopus natalensis, Crotch. 



I do not know the species for which Gorham has made the 

 genus Pyciio(/ei(steria,hnt,'dii he has indicated no features of 

 any generic significance by which it can be distinguished from 

 PetalosceVis, I think it will be best to regard it as synonymous 

 with that. 



In 'Notes from the Leyden Museum/ 1888, p. 147, Gorham 

 has changed the name Cyrtotriplax {Tritoma) senegcdensis, 

 Crotch, to Amblyopus rotundatiis (omitted from Kuhnt''s 

 Catalogue), but without i-eason, for Crotches species agrees 

 well with Tritoma. Petahscehs nigrlniis, Gorh,, and several 

 other African species are now added to this genus. They 

 differ considerably in the form of the tibiae and antennae, but 

 the transition is gradual from species to species, and I have 

 found nothing to justify adding to the already too numerous 

 genera. 



Closely related to Tritoma is the peculiar genus PaI(SoIi/J>as, 

 which has never been adequately described, although various 

 species have been named by Crotch and Gorham. It has 

 been quite unnaturally placed with Soutli-American forms 

 on account of its globose shape. In reality, it differs from 

 Tritoma only in minor details, viz. the shape of the body, 

 short legs, feeble antennae, and broadly bilobed prosternum. 

 An important feature hitherto overlooked is the marked 



