138 



NEW YORK STATE MUSEUM 



exceedingly fine. It is very generally worn off so that it is hard 

 to find a specimen showing it. On several scales in the specimen 

 belonging to the Yale Museum (2875) it is well shown and from one 

 of these figure 5-c was drawn. The ornament consists of exceedingly 

 fine lines, several of which may flow together towards the center 

 of the scale into an elongate irregular elevation. From this area 

 the lines are given off at irregular intervals and may again fuse here 

 and there for part of their length. They may be traced to the pos- 

 terior border of the scale, 



The lateral line Scaumenacia has not yet been figured, although 

 it is known to be present in this form. It is here figured in a small 

 specimen three and one-quarter inches long, in the New York State 

 Museum, in which it is beautifully preserved. 





...-.■sf: 



Fig. 6 Scaumenacia cur ta (Whiteaves). Small specimen, 3^ inches in length, showing 

 ateral lin3; natural size. Upper Davonic. Sjaumeaac bay, Quebec, Can. 



LITERATURE CITED 



1 Dollo, Louis. 1895. Sur la phylogenie des dipneustes. Bull. Soc. 

 Beige de Geol., IX, p. 79-128, pis. v-x. [PI. v, fig. 6, is an outHne re- 

 storation of Scaumciiacia curia, labeled " Figure original de M. R. H. 

 Traquair."] 



2 Eastman, C. R. 1908. Devonian fishes of Iowa. Am. Rep't Iowa 

 Geol Surv. XVIII. [Figure of head of Scaumenacia. Fig. 35.] 



3 Goodrich, E. S. 1909. Vertebrata craniata (First fascicle: Cyclos- 

 tomes and Fishes). Lankester's "A treatise on zoology." Part IX. 



4 Jaekel, O. 1890. [On Phaneropleuron and Hemictenodus, n. gen.] 

 Sitzber. Gesell. naturforsch. Freunde Berlin, p. (1-8). 



