1903.] Hay^ Cretaceous Fishes fro7n Mount Lebanon, Syria. 445 



From P. duhius it differs in having fewer soft rays in the 

 dorsal and anal fins, and in having these smooth, instead of 

 ribbed. 



The possibility that this fish is specifically identical with 

 the one here described as Aipichtys formosus has not escaped 

 the attention of the writer. Were the dorsal spines pres- 

 ent in the latter species, this question could be settled 

 more satisfactorily. It is regarded as belonging to Aipichtys 

 rather than to Pycnosterinx , because the scales are smooth- 

 edged, and there appear to be thickened scales along the 

 border of the abdomen. Aside from the generic differences, 

 Pycnosterinx levispinosus has almost certainly been a deeper- 

 bodied fish. If we measure the distance from the anterior 

 anal spine to the anterior soft rays of the dorsal in the two 

 fishes, we find that in P. levispinosus this measurement is 

 equal to the distance from the base of the caudal fin to the 

 snout; while in the case of Aipichtys jormosus the dimension 

 will be equal only to the distance from the caudal base to the 

 front of the opercular apparatus. Again, the ventral spine of 

 P. levispinosus extends backward to the first soft ray of the 

 anal fin, while in A. formosus it reaches only to the first spine. 

 Lastly, there do not seem to have been any thickened scales 

 on the abdomen of P. levispinosus. 



CARANGID^. 



Aipichtys formosus, sp. no v. 

 Plate XXXII, Figures 2 and 3. 



Of this supposed new species there is in the collection only 

 a single specimen. No. 4519 (3831). This is incomplete, the 

 head and the anterior portion of the body being broken away 

 from about the articulation of the lower jaw to the middle of 

 the dorsal fin. As a consequence, various characters are un- 

 determined, and we cannot be wholly certain regarding the 

 generic position of the fish. 



No dorsal spines remain in the specimen. Of the articu- 

 lated rays there are 13 present; possibly, but not certainly, 

 all that were possessed by the fish. The anal fin comprises 



