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Annals New York Academy of Sciences 



With these calcareous or siHceous impregnations, the lorica becomes thick, 

 and then presents a stable ornamentation in the same species, but quite variable 

 from one species to another. Spines, bristles, warts, webs, dots, rings, and 

 checks decorate the surface of the lorica. 



The ma.ximal diversity in ornamentation is obtained in the following two 

 genera: Pseudokep/iyrion (figure 3) and Kephyrion. Here we find forms with 



Figure 4. l.oricae of Kephyrion (after Bourrelly). 1: silla; 2: doUolum; 3-4: nuislign- 

 phoruni; 5: ciipidijonne; 6: littorale; 7: liltorale var. conslricla; 8: nibri-daustri; 9: ruhri-daus- 

 tri var. amphora; 10: impletum; 11: cylindricum; 12: hetnispliaericum; 13: petasatum; 14 

 campantdiforme; 15: amphonda; 16: ovale; 17: cinctum; 18: Valkanovii; 19: globpsum; 20 

 Starmachii; 21: wo.sqiiensis; 22: spirale; 23: hacillijorme; 24: densalum; 25-29'': as per; 30 

 Schmidii; 31: imonstans; 32: lalicollis; ii: parvidiim; 34: moniliferum; 35: circnmvallalinn; 36 

 prismaikum; 37: velatum. 



marked calcareous impregnation, and forms with little or no calcification. The 

 small, more or less calcified cells, such as in Pseudokephyrion undulatum or 

 Psendokephyrlon latum (figure 3) recall the loricae of the Dinobryons in the 

 undulating appearance of the edges, but they do not show the hehcoidal torsion. 

 But the forms with heavily colored, thick lime incrusted walls, have by con- 

 trast, a more varied ornamentation. One may recognize with them: (1) granu- 

 lations or striations arranged in regular transversal circles: {Pseudokephyrion 

 Entzii fo. granulala, Ps. Skujae (figure 3)) or irregular ones (Ps. circum- 



