274 



dium carinate (at least in the female), etc. Sr/fala armati- 

 cepSj Macl., is (as noted above under Scitala) a member of 

 this genus, and the name Scitala im'pressa, Brenske, probably 

 is also a name of the same insect. Having examined in the 

 Macleay Museum the type of Platydesmus flavipennis, Macl., 

 1 am able to say that it also is a N eso and is identical with my 

 N. planicollis. 



A. A conspicuous transverse carina on the 



clypeus ... ... ... ... ... armaticeps, Macl. 



AA. Clypeus not having a transverse car- 

 ina. 

 B. Hind angles of prothorax scarcely 

 defined and very blunt. Size 

 small. 

 C. Elytral interstices in all respects 



uniformly punctulate ... ... usta, Blackh. 



CC. Alternate interstices of elytra not 

 punctured uniformly with the 

 other interstices. 

 D. Pronotum quite strongly decli- 

 vous behind ... ... ... ... yorkensis, Blachh. 



DD. Pronotum not declivous behind flavipennis (Platydes- 

 mus), Macl. 

 BB. Hind angles of prothorax (viewed 

 from above) well defined and almost 

 right angles. Size large ... ... ducalis, Blackh. 



N. ducalis, sp. nov. Fern. Ovata; subnitida; supra subgla- 

 bra; subtus breviter pilosa; obscure ferruginea; antennis 

 9-articulatis, fiabello 3-articulato quam articuli prsece- 

 dentes conjuncti sat breviori; clypeo confertim rugulose, 

 f rente sat crebre nee rugulose, minus fortiter punctula- 

 tis; prothorace quam longiori ut 7 ad 4 latiori, antice sat 

 fortiter angustato, supra vix crebre minus fortiter punc- 

 tulato, lateribus (superne visis) leviter arcuatis postice 

 subparallelis, angulis anticis subacutis parum productis 

 posticis (superne visis) fere rectis bene definitis, basi 

 utrinque leviter sinuata ante scutellum subtiliter mar- 

 ginata; scutello fere lasvi; elytris punctulato-striatis, 

 striis manifesto geminatim ordinatis, interstitiis alternis 

 baud (alternis leviter) convexis (alternis sat crebre, alter- 

 nis minus crebre, punctulatis) ; pygidio longitudinaliter 

 carinato, crebre fortiter sat rugulose punctulato; tibiis 

 anticis extus tridentatis ; tarsis posticis modicis sat ro- 

 bustis, articulo basali quam 2"s nonnihil breviori; coxis 

 posticis quam metasternum sat brevioribus; segmento 

 ventrali apicali, postice subtruncato. Long., 7 1. : lat., 

 4 1. 



This species, as noted above, is readily separated from its 

 known congeners by its much lars^er sizes, differently-shaped 

 prothorax, etc. The fine raised line on the basal margin of 



