NATJTILIDjE. 
373 
tab. xxxiv. fig. 16, a, 5), described and figured it under the name 
llJiynclioteutliis Quenstedti^ and this name was again employed 
(1858) by MM. Pictet and de LorioP for ahTeocomian type. 
There is no locality recorded against the specimens, but as they 
form part of the Tesson Collection (No. 73988 a), they are pro- 
bably from France. The horizon is either Jurassic or Cretaceous, 
probably the latter ; and the same observation applies to 73988 h 
and 73988 c. The upper mandibles numbered 73988 h are perhaps 
referable to Pictet and de LorioTs Eliynclioteuthis Quenstedti, 
mentioned above as distinct from Coster’s type of the same name. 
These are also from the Tesson Collection, and are without locality 
and horizon. 
A type of upper mandible which is remarkable for the very small 
size of the posterior part, agrees in the main with Qnenstedt’s 
Rhyncholithes acutiis, as figured by him in the Atlas to his ‘ Cephalo- 
poden’ (1849), tab. xxxiv. figs. 17, ci-c (not figs. 16, 18, 19). The 
same form is also figured by Qneristedt in his ‘Handbuch der 
Petrefactenknnde ’ (1852), tab. xxxii. fig. 12, and in the new 
edition (1884, Abth. hi.) of the same work, tab. xlviii. fig. 10, 
The specimens are from the Tesson Collection, and are numbered 
73988 c. 
A remarkably beautiful little upper mandible (No. 73985), with 
a very prominent longitudinal ridge on the under side, resembles 
somewhat the Rhynclioteutliis Fischeri of Coster The specimens 
of upper mandibles (numbered 37135) from the Neocomian of the 
South of France evidently belong to the same type, so that the 
first-named specimen may be safely referred to the same locality 
and formation. 
The upper mandibles numbered 73985 a, from the Cxfordian of 
St. Pierre (Isere), France, agree well with d’Crbigny’s description 
of Rhynclioteutliis Larus, Faure-Biguet ^ to which they may there- 
fore be referred. 
^ Pictet and Oampiche (Terr. Cret. de Sainte-Croix, Pal. Suisse, ser. iii. 
1862, p. 163) give 1859 as the date of Coster’s species, giving Pictet and de 
Loriol’s name the priority thereby. But this is an error, as the date of pt. ii. 
of the ‘ Catal. des Ceph. Foss, des Alpes Suisses,’ in which all Coster’s species of 
Ehynchoteuthis were described and figured, is 1857. I have verified the latter 
date by turning to Coster’s original memoir contained in vol. xvii. of the 
‘ Nouveaux Memoires de la Societe Helvetique des Sciences Naturelles.’ 
2 Catalogue des Oephalopodes Fossiles des Alpes Suisses, pt. ii. 1857, p. 3, 
tab. iv. figs. 2-5 (not 11-14). 
3 Considerations sur les Belemnites, 1819, p. 68, pi. vi. fig 2. See also 
d’Orbigny, in Annales des Sciences naturelles, vol. v. p. (218), pi. vi. figs. 2, a-d. 
