THE CYLINDRICAL BARK BEETLES. 553 



eijrhth. Thorax one-third broader than long, sides feebly curved, front 

 angles prominent, hind ones rounded ; margins flattened, tiuelv crenate : 

 disk coarsely and roughly granulate and with four raised lines, the outer 

 one on each side curving arouml the apex, the inner ones joined to the 

 curve but not to each other, the interval between them wider than in qiiad- 

 riijuituta. Elytra nut wider than thorax, each witli four discal ridges, in- 

 tervals not punctate but each with two or three rows of small oblong gran- 

 ules. Length 3.4 mm. 



ilarion C'otiiit>"; rare. ]Mny 2.9. Described from a single speci- 

 men taken by H. ^Morrison from beneath bark. Broader than quad- 

 riguttata. elytra not marked with red as there, and with the in- 

 tervals granulate instead of coarsely punctured. 



D. quadricoJli.^: Horn, narrower than qitadrigidtaia. dark brown. 

 length 2.5 mm., is listed by Dury from Cincinnati. 



Eudi.'^iiia undidaia ^lelsh., elongate, subcylindrical, picemis. 

 length 5 mm., has also been taken by Dttry, who found them running 

 up and down and burrowing in the bark of a buckeye log, 



IV. CoxELUS Latr. 1S29. (L.. -'coxa.") 



Antenna; as in Ditoma but received in grooves beneath the eyes: 

 front coxal cavities closed behind. One species occurs in Indiana. 



*10oS (3261). CoxEn s guttil\ius Lee. New Spec. X. Amer. Col., ISilS. r.-j. 



Elongate-cblnng. subconvex. Piceous-black ; antennae, legs and margins 

 of thorax and elytra dull reddish-brown. Thorax twice as wide as long, 

 -apex deeply emarginate. front angles prominent; sides broadly curved: 

 margins wide and flat, edges finely serrulate ; surface coarsely granulate. 

 Elj-tra with nws of coarse granules, and each also with sjrots of coarse 

 gray pubescence forming an interrupted sinuous baud near middle and an- 

 other subapical. Length 4-5 mm. 



Southern half of State: frc((uent. February 10-Xoveiiibcr 19. 

 ! )ccui-s on dry fungi and beneath close fitting bark of beech, maple 

 and other trees. 



Lasconotus borealis Horn, thorax wider than long, elytra equally 

 castate, piceous, length 2.5-3 mm., is known from ^Michigan, while 

 L. pi/.tilhis Lee., thoi-ax longer than wide, elytra broadly channeled. 

 fifth interval strongly elevated, color and size the same, ha.s been 

 recorded from Cincinnati. 



Tribe II. <'<>IA"DIINI. 



Elongate, cyliadrical beetles having the head horizontal; an- 

 tennte capitate, retractile; front coxal cavities narrowly closed be- 

 hind: first .ioint of tarsi as long or longer than the next two to- 

 gether, the three longer than the fourth. They occur beneath bark. 

 Twfi irenera are rejirescntcd in the State. 



