14 
The Ohio Naturalist. 
[Vol. VII, No. 1, 
LIST OF ORTHOPTERA COLLECTED IN GUATEMALA BY 
C. C. DEAM AND E. B. WILLIAMSON. 
A. N. Caudell. 
Tryxalis brevicornis Linn., one female. 
Orphulella negleeta Rehn, two males and two females. 
Orphulella punctata DeGeer, three females. 
Heliastus guatemalae Sauss., two males and two females. 
Heliastus sumicrasti Sauss., three males and two females. 
Osmilia tolteca Sauss., one male and three females. 
Schistocerca vaga Seudder, one female. 
Besides the above adult forms, there are six young nymphs 
of a species of Dictvophorus, thirteen nymphs of Heliastus, and 
one young locustian nymph. 
Washington, D. C. 
KEY TO THE FAMILIES OF OHIO LICHENS. 
J. C. Hambleton. 
1. Fruiting thallus with apothecia or perithecia containing asci; 
Ascomycetes living symbiotically with algae. Ascolichenes. 2. 
1. Fruiting thallus not with apothecia nor perithecia; spores produced 
on basidia; Basidiomycetes living symbiotically with algae. 
Basidiolichenes. 3. 
2 . Fruiting body an apothecium. Discolichenes. 4. 
2. Fruiting body a perithecium. Pyrenolichenes. 23. 
3. Hymenium on an exposed surface, (none in our territory. 
H ymenolichenes. 
3. Hymenium lining closed cavities (none in our territory). 
Gastrolichenes. 
4. Paraphyses forming a powdery mass with the spores; disc of apo¬ 
thecium more or less open. The paraphyses growing beyond the 
asci forming there a network, adhering to ti e disc of the apothe¬ 
cium which soon breaks up into a powdery mass with the spores; 
Algae belonging to the Chlorophyceae. C'onyocarpales. 5. 
4. Paraphyses not forming a powdery mass with the spores. 6. 
5. Apothecia borne on a stipe, exciple without algae; thallus crusta- 
ceous or hvpophloedal, without cortical layer Caliciaceae. 
5. Apothecia sessile; exciple with algae. Cypheliaceae. 
6 . Disc of apotliecium lineal, elipsoid, or somewhat angular; algae be¬ 
longing to Chlorophyceae. Graphidales. 7. 
6 . Disc of apothecium circular. Algae belonging Chlorophyceae or 
C'yanophyceae. Cyclocarpales. 8. 
7. Apothecia without border. Arthoniaceae. 
7. Apothecia with border. Graphidaceae. 
8 . Spores uniseptate. 9. 
8 . Spores one-celled, multiseptate, or muriform, colorless or sometimes 
brownish; cell walls always thin. 11. 
9. Spores colorless; thallus foliose or fruitcose, with cortical layer. 
Theloschistaceae. 
9. Spores brown or dark. 10. 
10. Thallus foliose or furticose, with cortical layer; pycnidia endoba- 
sidial. Physiackae. 
