22 BACTERIOLOGY 



Alveolate, marked by depressions separated by thin walls, so as to 



resemble a honeycomb. Fig. 12, C. 

 Punctate, dotted with punctures like pin-pricks. 

 Bullate, like a blistered surface, rising in convex prominences,. 



rather coarse. 



FIG. 10. Types of colonies. 

 A. Cochleate. B. Ameboid. C. Rhizoid. F. Curled structure. 



Vesicular, more or less covered with minute vesicles due to gas. 



formation more minute than bullate. 

 Verrucose, wart-like, bearing wart-like prominences. 

 Squamose, scaly, covered with scales. 

 Echinate, beset with pointed prominences. 

 Papillate, beset with nipple or mamma-like processes. 



FIG. 11. Types of colonies. 

 D. Mycelioid. E. Filamentous. 



Rugose, short, irregular folds, due to shrinkage of surface growth. 



Corrugated, in long folds, due to shrinkage. 



Contoured, an irregular but smoothly undulating surface, like the 



surface of a relief map. 

 Rimmose, abounding in chinks, clefts, or cracks. 



