cclxx 



The female beetle makes an incision in the bark, causing it to be split from 

 A to sometimes h an inch. The incision is often made entirely through the 

 bark, and the egg is thrust between the bark and the liber at right angles 

 to one side of the slip, from \ to \ of an inch from the aperture. Some- 

 times the bark is but partially penetrated, in which case it is pried open to 

 one side of the aperture for the reception of the egg. In either case the 

 egg is accompanied by a gummy fluid which covers and secures it in place, 

 and usually fills up the aperture. In young trees, with tender bark, the 

 egg is usually thoroughly hidden; while in older trees it is sometimes so 

 shallowly embedded as to be readily seen. The ovipositor of the female 

 beetle is withdrawn and invisible in repose, but may be exserted. It is 

 horny, broad, flattened, with a thin edge. It is probably strong and sharp 

 enough to penetrate soft bark without any previous work of the jaws, as I 

 can find no sure indication of mandibular action in the punctures I have 

 examined. 



Dr. G. Engelmann submitted for publication a paper on "The 

 Junipers of North America, including Mexico." The Doctor said 

 the most common of the junipers of this country was the red 

 cedar, though the name of cedar was a misnomer. It was no 

 relative to the cedar of Lebanon, and bore no resemblance to it. 

 It had probably been given its name by the early settlers on 

 account of its wonderful durability, and perhaps by reason of its 

 fragrance. It was the only species of conifer found in so wide a 

 a range, extending from ocean to ocean. 



Dr. G. Engelmann spoke as follows on the 



GEOGRAPHICAL DISTRIBUTION OF NORTH AMERICAN FLORA. 



It is well known that the broad belt of timberless land which stretches 

 from the Hudson Bay regions across the valleys of the Upper Mississippi, 

 Missouri and the western confluents of these rivers through Texas and into 

 Mexico, separates the floras of the eastern, -wooded, from the -western, 

 mountainous, regions of North America. This belt has a flora of its own, 

 which, singularly enough, is little influenced by latitude, at least in its 

 prevailing features, many of the characteristic plants stretching from Ma- 

 nitoba down to the Rio Grande. 



The Atlantic and Pacific floras are so completely separated by this belt 

 that scarcely any species of tree of one side is found on the other. Our 

 Red Cedar constitutes one of the very few exceptions. 



The Eastern Flora is generally divided into the strictly Atlantic Flora 

 and that of the Mississippi Valley. The former includes that of the Alle- 

 ghany Mountains down to their western declivities, and to the headwaters 

 and upper valleys of the western streams.* What we may call the Flora of 



* Among the interesting facts connected with this floral limit is that the true guercus 

 Prima is not found west of this line of demarkation, while westward it is represented by 



