130 DESCRIPTIONS OF NEW SPECIES. 



Aljjhitobius, differs from them by the epistoma being shorter, less 

 prominent at the sides, by the frontal suture being obsolete, and 

 by the basal membrane of the labrum being visible. From the 

 other genera of the tribe Hypophloeini, it will be readily distin- 

 guished by the table given below.* 



It seems, by the exposed pygidium, to be nearly related to the 

 European genera Gataphronetis and Pygidophorus, but differs 

 from the latter by the eyes not being approximate beneath, and 

 from both by the form of the last joint of the maxillary palpi. 



409. D. creiiatUH. Elongatus, subdepressus, piceus vel rufo-piceus 

 nitidus, capite thoraceque sat dense subtilius punctatis, hoc latitudine 

 paulo breviore, antrorsum subangustato, apice emarginata, angulis 

 anticis rotundatis, lateribus paulo rotundatis tenuiter marginatis, basi 

 vix bisinuata, immarginata ; elytris striis tenuibus fortiter punctatis, 

 interstitiis vix convexis punctulatis ; subtus fortiter punctatus. Long. 

 •22. 



One specimen from Texas, sent me by Mr. Salle ; another of 

 uncertain locality, but I think from New York. Resembles in 

 appearance a small Uloma, but easily distinguished by the 

 generic characters. The stria? of the elytra are fine, and a little 

 deeper behind ; they are strongly punctured, with the interstices 



* The increase of the genera of Hi/pophlceini renders imperfect the table 

 on page 238 of the Class. Col. N. America, but the following synopsis ex- 

 presses the relations of the genera now before me : — 



A. Antenna? dilated and perfoliate (epipleura? not extending to the tip of 



the elytra) ; 

 Pygidium not exposed ; anterior tibia? dilated, serrate. Evoplus. 

 Pygidium exposed ; anterior tibia? slightly dilated, not 



serrate. Hypophueus, 



B. Antenna? slender, 5th joint not dilated ; 



Outer joints gradually larger ; 



Pygidium partly exposed ; anterior tibire slightly di- 

 lated, very obliquely truncate at tip ; 



Anterior tibia? finely denticulate externally ; epipleura? 



slightly abbreviated. Delopygus. 



Anterior tibia? not serrate ; epipleura? extending to the 



tip. Eutochia.. 



Pygidium entirely covered by elytra ; 



Tibial spurs distinct ; epipleura? not extending to tip. Sitophagcs, 



Tibial spurs obsolete ; epipleura? extending to tip. Prateus. 



Last two joints of antenna? suddenly larger. Diomns. 



