273 



SCHLOENBACHIA INFLATA, Sowerby. (Sp.) 



Ammo7iites infiatus (Sowerhy.) • — Stoliczka. 1865. Cret. Ceph. S. India, vo 



I, p. 48, (which see for a list of the synonyms 

 of European specimens), i)ls. 27, 28, 29 ; and 

 30, figs. 1-3. 

 ScMoenbachia inflata, Whiteaves. —1884. This volume, pt. 3, p. 200. 



" " Szainocha. — 1885. Zur Kenntniss einer mittelcretatie- 



chen Cephalopoden fauna den Inseln Elobi. 

 (Denkschr. d. k. Akad. d. Wissensch. Wien, 

 • Mat. nat. CI. 1885, Bd. xlix) p. 232, pi. 2, 

 figs. 1-3. 



" " Choffat. — Materiaux pour I'etude stratigraphique et 



paleontologique de la province d'Angola, 

 (Mem. Soc. de Physique et d'Histoire Na- 

 turelle de (Jeneve, vol. xxx, pt. 1, No. 2.) 

 p. 62. 



" " var. Jack & Etheridge. — 1892. Geol. and Palteont. of Queensland and 



New Guinea, London, p. 409. 



" " Diller and Stanton. —1894. Bui. Geol. Soc. Amer., vol. v, p. 445. 



" " Kossmat. — 1895. Untersuch. liber die Slldindische 



Kreideformation, pt. 1, p. 185, pi. 23 (9) 

 a-c, and 2 ; and pi. 24 (10), fig. 1. 



East end of Maud Island, Dr. Newcombe, 1895 : a large but imperfect 

 specimen, about eight inches in its maximum diameter. 



ACANTHOCERAS SPINIFERUM. (Nom. mut.) 



Plate 35, figs. 2, and 3, 3 a. 



Ammonites Stoliczkanus, vai\ spinifervs, Whiteaves. 1876. This volume, pt. 1, p. 24, 

 fig. 2; pi. 3, fig. 3 ; and pi. 4, fig. 1. 



In 1895, Dr. Newcombe collected several specimens of this species at 

 the east end of Maud Island, and among them a particularly fine speci- 

 men, that is about eight inches in its maxiojum diameter and five inches 

 in breadth. This fine fossil, which has been acquired for the Survey col- 

 lection, gives a much better Idea of the characters of the adult stage of 

 A. spiniferus than the imperfect and distorted original of figure 1, on 

 plate four of this volume, which was the largest specimen then known. 

 The former may be briefly described as follows : Shell large, strongly in- 

 flated but deeply and rather widely umbilicated, the umbilicus occupying 

 a little more than one third of the total diameter. Volutions probably 

 about five, though only the three outer ones are seen in this specimen, 

 increasing rather rapidly in size, the outer one rounded, but a little broader 

 laterally th-in in a ventro dorsal direction, truncated on the umbilical 

 side and overlapping about one-half of the previous one. Umbilicus 

 steep-sided, vvith a rounded margin ; shape of the outer lip unknown. 



