BY EDWARD NEWMAN. 



487 



Natural Order. — Helopites, Newman. 

 Genus, — Tanychilus, Newman. 



Caput poiT'Cctum elongatum exsertum prothorace paullo angustius ; 

 oculi magni, laterales, ad verticem fere conniventes : antennae 

 prothorace fere duplo longiores, ^. 



1 1 - articulatge ; articulus l"^ cae- 

 teris crassior ; 2"^ brevissimus, 

 caeteri elongati, singulo extus 

 crassiori : labrum fere quadratum 

 ultra clypeum valde porrectum, 

 apice membranaceum ; mandi- 

 bulae incurvse, apice acutae, intus 

 lobo magno membranaceo auctae; 

 maxillarum lacinia brevis, fere 

 obsoleta, galea elongata, apice 

 incurva, intus pilosa ; maxipalpi 

 galea longiores, 4~articulati ; 1"% 

 brevissimus fere rotuntlus ; 2"% 

 elongatus tenuis cylindricus ; 3"^ 2°. brevior, extus paullo incras- 

 satus ; 4"^ 3°. longior crassior versus apicem attenuatus ; labii 

 insertio elongatus angustus lateribus incurvis, labium insertione 

 latior, labipalpi breves 3-articulati, articuli longitudine subaequales 

 apicali incrassato ; ligula magna, rotundata, apice late emargi- 

 nata:'' prothorax antice capite angustior, postice manifeste latior, 

 maxima latitudine vix longior: elytra prothorace manifeste latiora, 

 parallella, apice acuminata; tarsi heteromeri, unguiculis pectinatis. 



* Species normales. 



Sp. 1. Tany. striatus. Piceus concolor glaberrimiis : clypens 

 antice pallidus ; elytra profimcU st7'iata, striis regulariter 

 jnmctatis, inter stitiis convexis, elevatis ; pedes elongati, meso- 

 et metafibicB, subincurvce. (Corp. long. "7 unc. ; lat. '225 

 unc.) 



Pitchy black, very shining : the anterior margin of the clypeus, and 

 also of the labrum, pale and membranous : the bead is punctured, 

 behind the clypeus it is deeply impressed, but on each side before 



* The lio-ula and palpiger are so closely united that I have not attempted, in 

 the cut, to define the line of demarcation ; the labipalpi appear to be inserted 

 into the back of the ligula : the apical joint of the labipalpi is not represented 

 in the cut as sufficiently incrassated. 



