COCCOSTEID.E. 
293 
P. 6267. Two imperfect ventro-lateral plates, doubtfully of this 
species ; Goslauer Sehiefer, Hurthal. 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 megalopteryx, 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. ^ - - T (f> ot. 
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 //?y T-*-* 
Ssjass, Govt, of St. Petersburg. Purchased , 1884. 
The following specimen is specifically undetermined :— 
P. 5232. 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., 1885. 
The following species have also bee” described, but are not re¬ 
presented in the Collection :— 
Coccosteus obtusus , H. Trautscnold, 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 ; Tra hold Coll., Dreslau.] 
- Coccosteus occidentalis, J. S. Newberry, Rep. Geol. Surv. Ohi 
vol. ii. pt. 11 ^ (1875), p. 32, pi. liv. fig. 2i —Cer&ifeimu (fqo£) 
^^^^^Limestone (Lower Devonian) ; Delaware, Ohio. [Dorsal ’ c^ 
plate ; Columbia College,. New York.] 
As remarked by jSewberry (Palaeoz, Pishes N. America, p. 52), 'Uo, to fyojb.A 
it seems not unlikely that to the latter species must be referred the 7/ N /Z 7 /x .3 
mandibular ramus named Liognathus spatulatus , J. S. NewberryT 
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, Yerhandl. russ.-kais. mineral. Gesell. [2] vol. xv. (1880), 
145, pis. vi., ix., x.; also Zeitschr. deutsch. geol. Gesell. vol.. xli. (1889), 
35, pis. iii., iv., pi. v. figs. 1-6. 
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