﻿238 INFERIOR OOLITE AMMONITES. 



agrees exactly with Quenstedt's delineation of Am. radians costula, 1 which was his 

 interpretation of Reinecke's figure. Haug 2 appears to have had two or three 

 species mixed as Harp, costula ; for, while he recognised Quenstedt's figure as the 

 young, he considered Dumortier's figure (see below) as the adult, and he also 

 quoted Branco's figure as a synonym. Besides this, he had just previously (see 

 synonyms) figured a specimen which to my mind agrees exactly with Quenstedt's 

 Am. radians costula, and had called it Harp. Munieri. In a letter recently received 

 from my friend he admits the agreement between Munieri and Am. radians 

 costula, and observes " that if Quenstedt's specimen be really identical with 

 Reinecke's species the name ' Munieri ' must fall into the synonymy." It seems to 

 me that this is what must happen at present. If, however, the smaller specimen 

 figured — which is Reinecke's costula — should prove not to be the young of the 

 larger specimen — which is certainly Dr. Haug's " Munieri" — then the latter name 

 may stand. 



Very different are the species which have been identified with Reinecke's Am. 

 costula. As the chief of them I may notice the following : 



1849. Am. badians costula, Quenstedt. Ceph., pi. vii, fig. 11. 



1858. — aalensis costula, Quenstedt. Der Jura, pi. xl, fig. 11 (the same as 



above). 

 1874. — costula, Bumortier. (See Hudlestonia Sinon, p. 227.) 



1878. Ludwigia costula, Bayle. Explic. carte geol. France, pi. lxxix, fig. 5 ; 



a Grammoceras closely allied to Gramm. 

 aalense. 



1879. Haepoceeas costula, Branco. See Gramm. costulatum, p. 197. 



1884. — — Wright. Lias Amm., pi. lxxxii, fig. 5. Fig. 6 is 



perhaps G. distans, p. 196. 



1885. Ammonites costula, Quenstedt. A mm. Schwabischen Jura, pi. liv, figs. 7 



— 9 and 49, see Gramm. costulatum, 

 p. 197 ; figs. 10 — 14 probably belong 

 to this species ; fig 50, see Bum. sub- 

 undulata. 



1886. Haepoceeas costula, Vacek. Ool. Cap San Vigilio ; Abh. k. k. geol. Eeichs- 



anstalt, Bd. xii, No. 3. The young of 

 this species are very similar to Bayle's 

 costula, but the adult form seems to indi- 

 cate that the species belongs to BZarpo- 

 ceras, sensu stricto. 



The small specimen figured is not unlike Gramm. distans (PI. XXXIII, figs. 

 1, 2 ; see p. 196), but differs by its more gibbous whorls, its more distant, more 

 direct ribs less ventrally-projected. These are just the points in which it agrees 

 with Reinecke's Am. costula. 



1 ' Ceph.,' pi. vii. 



2 " BZarpoceras'" ' Neues Jahrbuch fur Mineral., &c.,' 1885, Beil.-Bd. iii, p. 664. 



