346 
AN EXPLANATION OP 
Coriacea, of a substance like leather. 
Defle.ru, the edges declining towards the sides. 
Dentata, the margin or apex set with sharp pointed processes. 
Denticulata, with minute distinct teeth. 
Dimidiata, covering hut half of the back. 
Fmarginata, terminating in a notch, 
Fastigiata , transverse, at the apex emarginate. 
Penestrata, with one or more transparent spots. 
Flex ilia, capable of being bent, not crustaccous. 
Hirta, thickly covered with short hairs. 
Hispida, set with short rigid bristles. 
Immarginata, without a margin or distinct rim. 
ImmobiliafhoX cannot be moved, and consequently are useless for High 1 ' 
IruequaUa, the surface not flat, but with irregular elevations and de- 
pressions. 
Integra, completely covering the back. 
Linearia, oblong, equal in breadth throughout. 
Lineata , marked with depressed lines. 
Lineato-punctata, dotted, the dots or punctures disposed in lines. 
Marginata, with a free elevated margin. 
Margo, the outer rim next the belly, from the base to the apex. 
Muricata, rough, with rigid spines. 
Mutilata, which do not. completely cover the back, whether with re- 
spect to length or breadth. 
Pilosa, set with distinct hairs. 
Porcata, with elevated longitudinal lines or ridges. 
Pramorsa, the apex terminating obtusely, with unequal incisures. 
Pubescenlia, covered with soft hair. 
Punctata, marked with very small excavated dots or punctures. 
Rigiila, not flexible. 
Motundata, the apex without angles. 
Pvgosa, wrinkled, marked with waved and elevated lines, either 
longitudinally or transversely. 
Sc.abra, rough with hard raised points. 
Sericea, covered with soft shining hairs. 
Sinvata, a hollow, a deep furrow as if scooped out. 
Spinosa, the margins set with subulated rigid spines. 
Striata, slightly channelled with parallel lines. 
Submargiiwtu, the margin having a distinct rim, but neither free nor 
elevated. 
Subrotunda, the outline nearly circular. 
Subulata, linear at the base, growing more slender, and pointed a- 
the apex. 
Sulcata, with one or more deep hollow furrows. 
