( Lexxn: ) 
NEUROPTERA—continued. 
Palingenia, species of, 61. 
Pentagenia, species of, 63. 
Polymitarcys, species of, 60.—P. Savignyi, 61. 
Potamanthus, species of, 76. 
Prosopistoma, the genus, supposed to be founded on an immature con- 
dition of Ephemeride, xlvii. 
Siphlurus, species, of, 125.—S. Linneanus, 127. 
Tricorythus, species of, 92. 
ORTHOPTERA. 
Acrydium peregrinum in Morocco, abundance of, xxx. 
Grasshoppers, machine to kill, xxxi. 
STREPSIPTERA. 
Notice of Monograph of, xxxii. 
THYSANOPTERA. 
Thrips, destructive to green peas, xl. 
THYSANURA. 
Lepisma saccharina, destructive to books and silk fabrics, xiv. 
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