The Ohio ^JSCctturalist, 



PUBLISHED BY 



The Biological Club of the Ohio Stale Uni'versity. 



Volume VI. APRIL, 1906. No. 6. 



TABLE OF CONTENTS 



OsBORN— Descriptions of Two New Cycadas from Louisiana 497 



Fischer— Ecological Observations on the Flora of ttie Shale Blufls in the Vicinity of 



Columbus, Ohio 499 



Claassen— Corrections to the Key to Liverworts 503 



MosELEY — Notes on the Former Occurrence of Certain Mammals in Northern Ohio 504 



SCHAFFNEK— Winter Buds of Ohio Trees and Shrubs... 505 



Van Hook— Ascochyta pisi— A Disease of Seed Peas 507 



SCHAFFNER— The Classification of Plants. Ill 513 



Morse— Key to Ohio Alders in Winter Condition 517 



Stockberger— Further Notes on Anthurus borealis 517 



EsTABROOK— Circular of Inquiry with Reference to the Present Status of the English 



Sparrow Problem in America 518 



Metcalf— Meeting of the Biological Club 518 



DESCRIPTIONS OF TWO NEW CICADAS FROM LOUISIANA. 



Herbert Osborn. 



The species of Cicadas described here have come to me from 

 Louisiana and inasmuch as one of them appears to be of econo- 

 mic importance and the other to possess points of special biologic 

 interest, it seems desirable that they should be described. 



Cicada erratica n. sp. 



Apparently closely related to Cicada nigriventris Walk but difEering 

 in details of opercula and in coloration. Sordid green with fuscous and 

 blackish markings. Length to tip of abdomen 21 mm., to tip of folded 

 wings, 36 mm., width of humeri, 9 mm.; width of eyes, 8 mm. 



Head scarcely as wide as pronotum, vertex scarcely longer at middle 

 than next to eye, pronotum with marginal keels slightly expanded pos- 

 teriorly. Elytra reaching half their length beyond the tip of abdomen. 



Color, — green, tinged with yellow; a transverse band from eye to eye 

 the posterior projection including ocelli, upper surface of front its central 

 portion between the transverse bars, tip of clypeus, a central divided stripe 

 on pronotum, some lateral patches, marginal patch on posterior lobe, four 

 cuneiform marks, base of scutellum at sides, terga of abdomen except 

 hind margins, apex of rostrum, tarsal joints, basal segment of female, 

 central patch on last ventral segment, ovipositor and tip of pygofer, dark 

 fuscous or black. Elytra, transparent, veins green to about the middle, 

 black on apical half, veins of wings black to a point somewhat nearer 

 the base. 



