GENERAL ORISMOLOGY. 13 



HEART-SHAPED (cordalum), a triangular figure, having its base 

 emarginate, lateral angles rounded, and lateral margins slightly swollen. 



KIDNEY-SHAPED (reniforme), is a half-moon shaped figure, with its 

 angles rounded, and its concave margin emarginate. 



TRIANGULAR (triangulare), when the margins meet in three angles. 



SQUARE (quadratum), when the four straight parallel margins are of 

 equal length. 



QUADRANGULAR (quadrangulare) , when two of the nuij^ms arc of 

 unequal length. 



OBLONG (oblongum, parallelogramum), a square with two of the 

 parallel margins equal, but longer than the other two equal parallel ones. 



ANGULAR (angulatum), when the angular margins do not exclusively 

 elbow outwards, but also inwards. 



FALCATE (falcatum), a figure formed by two curves bending the 

 same way, and meeting in a point at the apex, the base terminating in 

 a straight margin, resembling a sickle. 



SPATULATE (spattdatuin), a figure commencing with a narrow base, 

 gradually widening by the lateral margins sloping out, and terminated 

 at the extremity by a sudden straight line, (the antennae of many 

 Tachina and other Diptera). 



LOZENGED (rhomboidaE), a quadrangular figure, with two opposite 

 angles acute and two obtuse. 



19. 

 forms of Bodies. 



SPHERICAL (globosum, sphcericuin), a round body, having all its 

 diameters equal. 



HEMISPHERICAL (semiglobosum, hemispheericujri), a round body, 

 terminated on one side by a flat circular surface. 



LENTICULAR (lenticular e), a round body, with its opposite sides 

 convex, meeting in a sharp edge. 



CONICAL (conicum), a round body, the base of which is a flat circle 

 and the apex a point. 



SUBULATE (subulatum) , a long thin cone softly bent throughout its 

 whole course. 



COLUMNAR (teres*), a form the circumference of which is always 

 circular, but its thickness indeterminate. 



CYLINDRICAL (cylindricum), a body with its circumference round, 

 of indeterminate length, but equally thick throughout. 



