■HV2 UK PORT OF S'l'ATE GEOLOGIST. 



The TRA>fSiTiON Zone. — Tlie three nortJiern tiers of eountios in 

 Indiana embrace several hundred fresh water lakes within their 

 bounds. These lakes range in size from an area of half an acre up 

 to five and a half square miles. About their margins are often ex- 

 tensive areas of low, boggy land, covered with numerous forms of 

 plant life whose main distribution, is far to the north, and wliich 

 have here their southern limit. Among the more characteristic 

 plants of the Alleghanian flora, which are found only in the northern 

 fourth of Indiana, are the following: Larch or tamarack, Larix lari- 

 cina (Du Eoi); arbor vita: or white cedar, Thuja occidentalis L.; fal?e 

 lily of the valley, UnifoUum canadense (Desf.); moccasin flower, 

 Cypripedium acaule Ait.; showy lady's slipper, Cypripedium regime 

 Walt.; bog orchis, Arelhusa bullosa L.; fen orchis, Leptorchis locselii 

 (L.); sweet fern, Comptonia peregrina (L.); paper or canoe birch, 

 Bciula papijrifera Marsh; speckled or hoary alder, Alnns incana 

 (L.); gold-thread, Coptis irifolia (L.); round-leaved sundew. Drosera 

 rofundifolia L.; black chokeberry, Aronia nigra (Willd.); round- 

 leaved wintergreen, Pyrola rolundifolia L.; shin-leaf, Pyrola elli plica 

 Nutt.; trailing arbutus, Epiga^a repens L.; creeping wintergreen, 

 GauWieria procumhens L.; large cranberry, Oxycoccus marrocarpus 

 (Air.); chick-weed wintergreen, Trienlahs americana Pursh.; purple 

 bladderwort, Uiricvhiria purpurea Walt., and the twin-flower, Liu- 

 ncpe horcalis L. 



Among mammals aiul reptiles, llie following representatives of the 

 Alleghanian fauna oceur in the northern fourth of the State: Can- 

 ada porcupine, Erefhizon dorsal us (Ij.); red squirrel or chickaree, 

 Scivrus Jiudsonirus Erxleben; star-nosed mole, Condylura rrislata 

 (L.); hoary bat, Alalaplia cinerea (Beauvais); American badger. Tax- 

 idea americana (r)O(lda'rt); speckled tortoise, Clemmys gullalu 

 (Schneider), and Blanding's tortoise, Emys meleagris Shaw. 



Of the Orthoptera described in the foregoing catalogue, 33 species, 

 or 15.5 per cent, of the total, may be classed as belonging to the Alle- 

 ghanian fauna, and as occupying Ihe sonthern limits of the Transi- 

 tion Zone, which lies between the Boreal and Upper Austral zones. 

 These truly northern members of our Orlhopteran fauna are as 

 follows: 



INDIANA ORTHOPTERA BELONGING TO THE ATXEGHANIAN FAUNA. 



1. OrpliHli'llii prililna (Birrm.). H. T fii>]>i!«ii.^ Imldnmuuii (Scndd.). 



2. Orpliiilelht Kpeciom (Sciirlrt. ). 7. SiilKinu/ninni iri/o)ii!ii(/!(uiinn 



3. Sti'iwhothrm cHiiipeniiix Harris. (Thorn.). 



4. Mernstethiis litieaiiix (ScVLdd.). 8. Trimerofrojm nuu-itiiiut (Harris). 



5. Camniila pelliin'dd (Sciirlfl.). i). SrhlxtocriTn riihi(/i»n.ia (Harris). 



