272 ORISMOLOGY. 
Broader at the has eand apex — Ex. The Prester- 
num of many Capricorn beetles. 
24. Clavate (Clavata). Club-shaped. Linear at the 
base, but towards the apex growing gradually 
broader. Plate XI. Fig. 4. 
25. Quadrate ( Qiiadrata )-. Square. Quadrilateral 
with the sides equal and the angles right angles. 
26. Rhomboid (Rhomboidea). Quadrilateral with the 
sides equal, but with two opposite angles acute, and 
two obtuse. Plate XXVII. Fig. 62. /". 
27. Trapezate (Trapezata). Quadrilateral with the 
Jour sides unequal, and none of them perfectly pa- 
rallel. Plate XIV. Fig. 4. 
28. Trapezoid (T?ripezoidea). Quadrilateral, with two 
sides unequal and parallel a . Plate XXVI. 
Fig. 34. b\ 
29. Parallelogramical (Parallelogramica). Qua- 
drilateral, with all the angles right angles, and all 
the sides parallel, but two longer than the others. 
VI. FORM". 
1. Spherical {Spharica). The shape of a globe. A body 
whose diameter every way is equal. Plate XX. 
Fig. 5. 
2. Orbiculate ( Orbiculata ) . A depressed globe, 
whose horizontal section is circular, and vertical 
oval. Plate XX. Fig. 10, 11. 
3. Lenticular (Loiticidaris). Lens-shaped. Whose 
3 We have departed from the more usual definition of trapezoid, 
" An irregular figure whose four sides are not parallel," because the 
above is best suited to forms in insects. 
b We use this term to denote the shape of solid bodies. 
