SUPPLEMENT.— W [TCHELLIA. cxciii 



Genus — Pqhoilomoephus, 8. BucJcman. 



This genus should be removed from the family Hildoceratidge, and placed with 

 the Sonnininoe. See the excellent remarks hereon by E. Haug, Amm. Et. Moycus, 

 Bull. Soc. Geol. France, 3rd serie, t. xx, p. 297, 1893. 



Genus — Sonninia, Bayle. 

 Dwarf Sonniniae, series allied to the genus PoBcilomorjohus. 



Sonninia sulcata (S. Buclcman). Plate XXII, figs. 32, 33; Plate XXIII, fig. 1. 



1889. Lillia sulcata, This Monogr., PI. xxii, figs. 32, 33, PI. xxiii, fig. 1, p. 109. 

 1893. Sonninia sulcata, Haug, Amm., Bull. Soc. Geol. France, scr. 3, vol. xx, 

 p. 290. 



Dr. Haug's correction is justified — the species certainly belongs to the Sonninina?. 



Sonninia, aff. Buckmani, Haug. Plate XXIII, figs. 7, 8; Plate XXII, fig. 34, 



p. 107, 1889. 

 This species is closely allied to Sonninia Buckmani, Haug, Amm. Et. Moy., 

 Bull. Soc. Geol. France, ser. 3, vol. xx, PL IX, fig. 4, 1893. 



Sonninia dundriensis, 8. Buclcman. Plate XXIII, figs. 5, 6. 



1889. Sonninia sp., This Monogr., PI. xxiii, figs. 5, 6. 



Description. — A compressed form with small but excentrically coiled umbilicus. 

 Costse falcate and connate, not much projected peripherally. Periphery with a 

 small carina bordered by slight furrows. 



Locality and Stratum.- — Somerset : Dundry, Ironshot Oolite. 



Date of Existence. — Sauzei hemera. 



Note. — The three species just mentioned illustrate two series of dwarf 

 Sonniniae, whereof there are many undescribed forms. Sonn. sulcata and Sonn. 

 aff. Buchmani belong to the stout-whorled series; while Sonn. dundriensis shows 

 what are the characters of the compressed forms. 



Genus — Witchellia, S. Buclcman. 

 Witohellia sp. Plate XXIII, figs. 2—4. 



1889. Ludwigia sp., This Monogr., PI xxiii, figs. 2—4, p. 107. 



