﻿C0CC0STEID.E. 293 



P. 6267. Two imperfect ventro -lateral plates, doubtfully of this 

 species ; Goslauer Schiefer, Kutthal. Purchased. 



The following portions of median dorsal plates of Coccosteus ex- 

 hibit the internal longitudinal ridge as strongly developed as in a 

 specimen from Livonia figured by Pander l , and are ascribed by 

 Trautschold to a species supposed to possess pectoral appendages, 

 under the name of Coccosteus wegalopteryx, Trautschold 2 . If the 

 pectoral appendages are correctly associated with the plates, the 

 species does not pertain to Coccosteus ; if not, the specific name is 

 too inapplicable for adoption. 



P. 4731. Two fragments of the posterior portion of the median 

 dorsal element, and one specimen showing the greater 

 portion of the internal longitudinal ridge ; Devonian, River 

 Ssjass, Govt, of St. Petersburg. Purchased, 1884. 



The following specimen is specifically undetermined : — 



P. 5282. Imperfect median dorsal plate described and figured in. 

 Geol. Mag. [2] vol. vii. (1880), p. 146, pi. v. fig. 3 ; 

 Upper Devonian, near Chudleigh, S. Devon. 



Presented by John Edward Lee, Esq., 1835. 



The following species have also been described, but are not re- 

 presented in the Collection : — 



Coccosteus obtusus, H. Trautschold, Zeitschr. deutsch. geol. Ges. 

 vol. xli. (1889), p. 44, pi. v. figs. 7-9, pi. vi. figs. 1, 2 (?in 

 part). — Devonian ; Ssjass, Russia. [Imperfect detached 

 plates ; Trautschold Coll., Breslau.] 



Coccosteus occidentalis, J. S. Newberry, Rep. Geol. Surv. Ohio, 

 vol. ii. pt. ii. (1875), p. 32, pi. liv. fig. 2. — Corniferous 

 Limestone (Lower Devonian) ; Delaware, Ohio. [Dorsal 

 plate ; Columbia College, New York.] 



As remarked by Newberry (Palaeoz. Fishes N. America, p. 52), 

 it seems not unlikely that to the latter species must be referred the 

 mandibular ramus named Liognathus spatulatus, J. S. Newberry, 

 Rep. Geol. Surv. Ohio, vol. i. pt. ii. (1873), p. 306, pi. xxix. fig. 4. 

 This is also preserved in the Museum of Columbia College. 



1 C. H. Pander, Placoderm. devon. Syst. (1857), pi. B. fig. 4. 



2 H. Trautschold, Verhandl. russ.-kais. mineral. Gesell. [2] vol. xv. (1880), 

 p. 145, pis. vi., ix., x.; also Zeitschr. deutsch. geol. Gresell. vol. xli. (18S9), 

 p. 35, pis. iii., iv., pi. v. figs. 1-6. 



