[September 



92 



T^^ NITIBULIBM OF GBEAT BKITAIN. 



BT RET. W. W. FOWLEE, M.A., E.LS. 



{Continued from vage 58.) 



NITIDULINA. 



I. ProsterBUtn depressed behind anterior cox^, not produced. 



1 Antennal grooves convergent, the convergence varying m degree, 

 i. Tarsi dilated on all the feet; disc of thorax smooth. 



A. Labrum bilobed ; males with 6th dorsal segment. 



a. Thorax widely margined. TrpTiiis-ib 



c^. Posterior-legs approaching one another --^^^^^^ 



I Posterior-legs considerably separated Omosiphob.^ 



I Thorax with hardly perceptible margin Micb.kula.. 



B. Labrum only feebly emarginate ; males without 6th Beg-nt^^^^ 

 ii. Tarsi not dilated; disc of thorax with impressions Soeond 



2. Antennal grooves parallel, or nearly so. Amphotii 



i. Front very strongly lobed; mandibles bifid at apex ^.. _ ^, 



ii. Front not lobed ; mandibles not bxfid, but w.th a strong tooth about. 



third from apex ... 



II, Presternum produced behind. 



i. Head without antennal grooves, or with very indistmct ones. ^^^ 



a. All the tibise simple ...^...••- •• 



I. Front tibi« simple ; hinder pairs of tibi« furnished with Bpine^B^-^^^^ 



ii. Head with distinct antennal grooves. 



.. Tarsi not dilated ; front tibi. simple, produced mto a ^trong^pomt . 



ternally at apex ' " . , 



J. Tarsi all dilated, front tibi« more or less ^^-"^^^'^^^l^^^l^ 

 toothed 



With the exeeptioB of /;,»*«, which does not belong to our fam 

 the genera as above given are the same as those comprised ,n the tr. 

 mtidulince, of Erichson (Naturgeschichte der Ins Deutscb., >n 13 

 Thon,son separates the tribe into three: the Meh^eJ''^na co.t^ 

 Pria and MeUsetle. ; the Thalycrina containing Pocad^us and TMy^ 

 and the NitMma containing Amplotu, Omouta, Soroma MHd^ 

 and JBp».<.«. The tribe, however, as above given,is eas, y dist.ngu, 

 able from the preceding by the abdomen being almost ,f not ent.r 

 covered by the elytra, and from the next iCyehram^na) by the the 

 only fitting closely to the base of the elytra, and not covering .t. 



EpuBiEA, Erichsoii, ' 



This genus is one of the most difficult of all ourgenera ; som:^ 

 the speci's are very distinct, so much so that they have been he |. 

 form separate genera^two^f*^e^avebeenad^ 



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it. 



