OF Till - . UNITED 81 \ I .",i I | 



valdi 'nde indistinct et inter) , ,/„/„ 



intus semim . unguiculU timplicibm: at 



aliit I aliis trunca 



Our genera may be thus arranged: 



A. Abdomen articulo •">"' postice rotundato, -.-xto abscomlim: 



Antenna: filiformes; frons marginc porrecto ... \ 



Antenna; flabellatse; frons non marginata: 



Antennae 1 t-articulal - . . . . . | :ll ^ 



Antenns 12-articulal ...... Euthysanioa. 



B. V I • .11 articulo o'° trim conspicuo: a rabserrat 



Tarsi mediocres, tibisB antics apice panlo prodm - - - I 



Tarsi longissimi, tibiae anticse bidentatae - - - . . - BaB , 



Ariiun i 9 I.e. 

 Frons concava, antico subrotumlata prominula; labrom brevissimum, sub fronto absconditam: m 

 dibulre elongate falcatae tenues: palpi articulo ultimo vix dilatato: antennae vix Berratae, articuli-i J 

 coninnd I [ualibus, (ultii rnum quadratnm, lateribus rectis, antice trnneatom, 



non lobatum, at linca transversa \m\ . postice sabito inflexnm (non mucronatu ue inter 



medi mutes: posticsa valde obliqnae, laminis intus sensim panlo dilatatis: tarsi Ion- 



ginscnli, pubescentes, setosi, articulis 1 — 1 Bubsequalibus, 5'° doplo longiore ongnicolis integris: tibiae 

 omncs tenues, calcaribos parvis: abdomen 5-articolatum. 



\ -mall insect 1 1 • i \ i 1 1 -_r very much the appearance of a lender cylindrical Cardiophorus, 

 l)ii t by it> long mandibles, and v. ry short labrum, evidently belonging to the presi m group: 

 the head is exserted, am! the eyes are moderately prominent : the thorax i- a- long a- it 

 i- wide, rounded <>u tin' sides, narrowed Blightly towards the posterior angles, which are 

 diverging and slender; the lateral margin is not apparent; the scutellum i- emarginate in 

 front, and acute behind; the elytra an- Bcarcelj wider than the thorax, and nearly parallel 

 • Hi the sides. The | rost< rnum posteriorly is suddenly inflexed so much, that I am unable 

 t<> see if it is mucronate at tip: the mi sosternum, howi ver, i- visible between the middle 



e, and appears concave in its deepest part ; the middle coxas are Bmaller than in tho 

 r genera of this group, and are visiblj teparated. The posterior • ire also di- 



vergent at their inner tip, as in the genuine Elateridse; while in the following genera they 



lie close '". 



The name i- derived from quasi mulus. 



1. A. calif or n icus, oigro-pii 

 qnadrato, lateribus rotnndato, snbtiliter pnnctolato, ango triii 



tilS pare 



Lon^. ■_'■">. 



One specimen, San I' >, I ilifornia. The I iwardi the 



hi 3e, jo that the mi rsl posteriorly the 



rows of oblong points; the elevation of the fifth inl behind the middle i- alt'>_-< t tn r 



anon ami reaches quite t>. the apex. 



