20 



(he sm-nicc of Hh- front. The occipHal roirion is considorahlj shorter than 

 the clvpcal ; the occiput Ijeing short in the niiddh', and dilated on tlie si<U\ 

 The epicraniiini is rather small, sul)trianguhir : the liind edge being moder- 

 atidy rounded and encroaching (ni the occiput. Clypeiis s([uarish ; consider- 

 al)ly longer (Inin l)roa(l, the sides narrowing considei-ably in front, and w ith 

 no orl)ital region; surface moderately convex. Ifandihles long, slender; 

 lalii-uin minute; tongue well deve!ojK;(l Two ocelli present. 



Eunodis cliloroleiicai id, $ (j)l. C, fig. 22). — Head remarkably broad on the 

 vertex; occiput remarkably short, dilating on the sides. Kpieranium very 

 large, tiansvcrsely diamond-shaped, extending much farlher bacd^ than usual, 

 will) two tubercles in the middle. The clypeal region Hat and very l)road at 

 l)ase, narrowing rapidl}' in front, more so than in any genus (-!' the family 

 thus tiir examined. The ocelli are very small, partially obsolete. 



Tcji/tfosia Canada/ in. — This genus is allied to Acidalia and rc/rojilioia in 

 the form of the liead, the cl3])eus being long and narit)w. Occi[!ital region 

 long; eyes full and gloljular; epicraninm small and subtriangular. 



Cyiiial<>2)ltora crcpusciilaiia (pi. G, fig. 23). — Head short and broad. Oc- 

 ciput moderately long, excavated by the epicraninm, which is narrow, small, 

 rounded, and very convex. Clypeus nearly square, only slightly longer than 

 broad, the sides sligiitly converging anteriorly. 



Eiirio)iios ///agfia/ia. — The head resembles Eurij/nciie in its geni.'nil 

 sha|)e, si/,e ol the eyes, breadth, and fo;'ni of the clypeal region (/. e., region 

 between the e}'es). The occiput is larger than usual, being veiylouir, and 

 not nuudi widn- ill the end than in the middle, since the e])ieranium is small 

 and docs not encroach as usual on it. l^ljiieranium small, globose; veiy 

 convex l)ehiiid each side; not reaching so near the orbits as usual; the 

 inferanlennal space Ix'ing ratlu'r \\ider than usual. C'lypeiis huge and broad; 

 not so free from the orl)its as usual ; very wide; not much longer than wide; 

 front edge roundcsd. J.,abrum small ; bioadly triangular. Man(lil)les small ; 

 abnost ol)solete. IMaxilla; small, weak ; one-third as l()ng as in Cabciodcs. 

 ]5y tin; cephalic; characters, this is a lower genus, evidently, than most of the 

 Enito}iiiu(e, and shoidd follow on alter J'Uin/incnc.. 



Aiiisrrond crornUnid. — Occipital region full, and very convex; wider 

 than in Cid>er()d:-x, the eyes l)eing Hatter and smaller. (.)ceiput veiy short, 

 especially in the middle, where it is wvy nai-row, forming a slight ridge, bnt 

 exp.-iuds 1riani,Milarly between the epicraninm and orliits; the epicraninm 



