52 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM 



Amphisorus hemprichii — Material examined 



Genus MARGINOPORA Quoy and Gaymard, 1834 



Marginopora Qtjot and Gaymard, Voyage de L' Astrolabe, 1833 according 

 to Blainville, Man. Actin., 1834, p. 412. — Cushman, Special Publ. No. 1, 

 Cushman Lab. Foram. Res., 1928, p. 222. 



Orhitolites (part) of Authors (not Lamarck). 



Genoholotype. — Marginopora vertehralis Quoy and Gaymard. 



Test in the early stages similar to Sorites with one or two rows of 

 apertures, later with the two original planes of chambers forced 

 apart and filled with a high series of chamberlets, those adjacent 

 in each annular chamber connecting, the outer wall projecting beyond 

 the peripheral plane of the lateral chambers; the apertures in more 

 or less vertical rows on the periphery with a horizontal row above 

 and below. 



Recent. Indo-Pacific. 



Genus ORBITOLITES Lamarck, 1801 



Orhitolites Lamarck, Syst. Anim. sans Vert., 1801, p. 376. — Cushman, 

 Special Publ. No. 1, Cushman Lab. Foram. Res., 1928, p. 222. 



Discolites (?) Montfort, Conch. Syst., vol. 1, 1808, p. 187 (genoholotype, 

 Discolites concentricus Montfort). 



Orbulites Lamarck, Extrait Cours Zool., 1812, p. 26 (genoholotype, Orhitolites 

 complanata Lamarck). 



Genotype, by designation. — Orhitolites complanata Lamarck. 

 Test discoidal, the earliest chambers in the microspheric form 

 coUed, later annular, divided into chamberlets, those of the same 



