( 490 ) 
Declivitas postiea convexe rotundata, ad suturam in utroque 
elytro perpaullulum subretusa, sat dense ut et latera elytrorum 
pilis brevibus suberectis griseis adspersa. Corpus subtus piceo- 
subbrunneum punetulatum, densius pubescens. Pedes testacei, 
omnino ut in prioribus constructi. 
Patria : America borealis (Wisconsin). 
Observatio. — Descriptionem Xyloteri politi dom. Leconte 
(Ent.Writing of Thos. Say, 1, p.519) cognoscere mihi non licuit. 
Esse potest, ut meum insectum eum illo congruat; sed illud 
elytra profunde et remote punctato-striata (rows being larger and 
more distant) exhibere auctor alio loco (Synops. Scol., 1868, 
p. 159, 4) affirmat. 
Diagnoses Xylebori retusi Leconte et X. longicollis Wolla- 
stonii verbaliter reproducere idoneum videtur. Insecta ipsa non- 
dum mihi obvenerunt. 
5. XYLOTERUS RETUSUS, Leconte. 
’ (Syn. Scol., p. 158, 1.) 
« Cylindrieal, rather stout, blackish brown, shining; head (>) 
deeply concave, sparsely finely punctured, clothed with erect hairs; 
prothorax much broader than long, rather quadrate in form, 
being as broadly rounded at tip as at base, convex, very strongly 
declivous and broadly impressed near the tip; asperate with 
transverse granulations, aud clothed with long erect hair in front, 
finely, not densely punctured behind; elytra with distant rows 
of rather fine and not deeply impressed punctures, each with a 
testaceous vitta abbreviated before and behind. 
Long. 45 mm. 
One specimen from Canada given me by D' Horn. Resembles 
the next, but is much larger, easily distinguished by the from of 
the thorax, which is more abruptly declivous in front, and 
broadly retuse. » 
