AMERICAN COMPONENTS OF THE TENTYRIIN^ 289 



9 — Frontal margin evenly and broadly arcuato-truncate, without 



emarginations ; wings apparently wanting or vestigial; elytra 

 feebly and briefly carinulate at each side of the suture near the 

 tip. [Type £^7nmefiasttis piaiciatus \^ez.'\ Emmenides 3-\^1 



Frontal margin feebly and angularly produced in the middle; wings 

 very fully developed; elytral series entire and conspicuous. 

 [Type E?nmenasttts texamis Lee] Armalia : "i «^ 



10 — Frontal margin somewhat variable, evenly sinuato-, or arcuato- 



truncate, the epistoma sometimes very feebly produced and 



broadlv truncate; wings fully developed to decidedly abbrevi- 



•^ ated. \Type Bmjtzenastus lojtg-ulus l^ec.'] Hylocrinus ^''x ' 



II — Head very short and broad, the apical margin rectilinearly 

 transverse and even ; tarsi with stiff yellow setiform hairs be- 

 neath ; wings apparently somewhat abbreviated or perhaps ves- 

 tigial ; pronotum not foveate, the elytra margined at base as 

 usual. \Ty])e B. cribratus Horn'] Emmenastrichus s^o 



Head less transverse, the frontal margin very broadly arcuate from 

 above; tarsi with numerous short decumbent stiff yellow sub- 

 spiniform hairs beneath; wings as in Hylocrinus; pronotum 

 with two deep fossie at base, the elytra not margined at base; 

 first joint of the hind tarsi much elongated. [Type Ennnenas- 

 tus foveicollis Champ. J *Ditaphronotus 3 '^i 



12 — Tibice normal, subcylindric, the anterior nearly straight as 



usual ; frontal margin generally feebly sinuato-truncate, not 

 evidently biemarginate. [Type Eminenastus conicicoUis Csy.j. 



Steriphanus -^ 



TibiiE gradually enlarged to the tip, the anterior short and arcuate; 

 frontal margin broadly arcuato-truncate, with two very minute 

 feeble emarginations ; basal joint of the hind tarsi longer than 

 the fourth ; prothorax narrowing from base to apex as in Crypta- 

 dius. [Type Emmenastus pinguis Lee. ] Stictodera 3 ^ v» 



13 — Frontal margin broadly arcuato-truncate, entire; hind wings 



very small and vestigial; tarsi sparsely spinulose beneath, the 

 basal joint of the posterior longer than the fourth; right mandi- 

 ble with a small acute tooth on the upper surface; body elon- 

 gate, parallel to suboval, the integuments dense. [Type Em- 

 menastus ater Lee] Melanastus 31:3 



The characters given above for Eurymeiopon Esch., are those 

 published by Lacordaire in the " Genera," as before intimated. 

 The genus is not known to me. 



Metoponiura n. gen. 



This is the genus that is known in our lists under the name 

 Eurymetopon Esch., and was so designated by the writer in his 



