of the ColeojJterons Group Macrodaclyndes. 4o I 



The wliite lateral border of the pronotum is a little dilated 

 at the hind angle, and the median line is also dilated at the 

 base and is sometimes not produced far beyond it. 



This is a much more elonoate species than D. ochracea, 

 iiniformis, and pallida. The prothorax is rather large 

 relatively and strongly contracted both in front and behind, 

 producing a narrow-waisted form. 



The aljove descri|)tion applies only to the male. In this 

 sex the front claws alone are cleft, but in female specimens, 

 which I believe to belong to the species, all the claws 

 are cleft, in addition to which there are no pale markings 

 upon the upper surface, the 5th ventral segment is greatly* 

 enlarged, and the pygidium much reduced. 



Diphyccrus tonkinensis, sp. n. 



Niger, elytri.s interdum castaneis ; ovatus, compactus, capite crebre 

 grnnuloso, erecte griseo-piloso, clypeo breviler semicirculari ; 

 pronoto convexo, dense varioloso, basi Isevi lineaque basali 

 mediana elevata, pilis longis erectis sparsuto setisqne flavidis 

 prope latera et aiigulos posticos vestito, antice angustato, angnlis 

 anticis fere acutis. posticis rectis, lateribus post medium angu- 

 latis ; scutello antice nitido, utrinque dense flavido-squamoso, 

 sqiiamis elongatis, convergentibus ; elytris profunde sat crebre 

 punctatis, squamis elongatis noiinullis albidis vestitis ; pvgidio 

 maguo, setis albidis adpressis sequaliter baud deuse vestito ; 

 corpore siibtus, propygidio pedibusque setis longioribus et den- 

 sioribus similiter vestitis : 



cJ , minor, pedibus antennisque longissimis, prothorace antice 

 attenuate, abdomiiie toto teeto : 



$ , major, raagis ovata, antennis pedibusque modice gracilibus, 

 abdoraine postice baud tecto. 



J . Long. 5-5 mm. ; lat. max. 3 mm. 



2 . Long. 7-8 mm. ; lat. max. 4 mm. 



Tonkin : Chapa [R. Vitalis de Salvaza, May, June) ; 

 Laos : Pak Lay (R. V. de Salvaza, Nov.). 



This is very similar to the typical species, Diphycerus 

 davidis, Fairm., of Eastern China, the pronotum of which is 

 loss densely punctured. It a[)pears to resemble still more 

 the second Chinese species, D. reilleri, Scm., of which only 

 tlie female has been described. In that sex of the new 

 species the tuft of scales upon the scutcUum is yellow, 

 instead of white, and the scales are erect and not decumbent. 



The two sexes differ consulcrably, as in all these insects. 

 The male is much smaller than the female, with the pro- 

 thorax attenuated in front, the abdomen and elytra much 



