Cumings — Development of some Paleozoic Bryozoa. 57 

 36 



Figures 36-43. — Types of budding from the protoecium. (Figure 36, after 

 Davenport ; figures 37-43, after Barrois.) Protoecium marked by star. 

 Order of budding indicated by Roman and Arabic numerals. 



36. Lepralia ; 37. .Alcyonidium ; 38. Cyphonautes (FlustreUa) ; 39. ScJiizo- 

 porella ; 40. Microporella ; 41. Bugula ; 42. Membranipora ; 43. Tubulipora. 



Figure 36 x 21 ; figure' 37 x 35 ; figure 38 x 30 ; figure 39 x 30 ; figure 

 40 x 25 ; figure 41 x 10 ; figure 42 x 20 ; figure 43 x 20. 



number is repeated consecutively an exponent is written to it ; thus, in fig. 

 43, III3 3 means III333, i. e., a bud of the third generation derived from the 

 right lateral primary bud through the right lateral of the second generation. 

 With slight modification this nomenclature would be equally applicable to 

 the corals, or any other colonial type of organism. 



