336a The Zoologist — January, 1873. 



lobe. Fingers elongate, the second finger rather shorter than the 

 fore-arm bone. Scapula very broad, with a large broad acromion 

 process and a moderate coracoid one. 



1. Rudolpliius laticeps (Broad-beaked Rorqual), Gray, Synopsis 

 Whales and Dolphins, p. 3. Sibhaldius laticeps. Gray, 1. c, p. 170, 

 figs. 37, 38 (skull and ribs). — Inhabits North Sea between Holland 

 and England. Skeleton Mus. Berlin (31 feet long) and Leyden. 



V. SiBBALDius. — Dorsal fin very small, far behind, and placed on 

 a thick prominence. Ribs 14 — 14; first short sternal end very 

 broad and deeply notched. ' Sternum trifoliate, with a short broad 

 hinder lobe. Scapula broad, with very long acromion and short 

 slender coracoid process. Fingers — ? 



1. Sibhaldius borealis {¥\3ii-haicV). Balcenoptera hoops, YarreU, 

 P.Z.S., 1840, p. 11. B.tenuirostris, Sweeting, Mag. Nat. Hist. 1840, 

 iv. p. 342. — Inhabits German Ocean between Belgium and England; 

 1827 (skeleton now at St. Petersburg, 102 feet long). British 

 Channel, Charmouth, Dorsetshire, 1840 (female 41 feet long). 



Family III. Bal.enoptrrid^ (Pike Whales). — Dorsal fin high, 

 erect, compressed about two-thirds of the entire length from the 

 nose. Pectoral fin moderate, with four short fingers. Vertebrae 50; 

 cervical vertebrae sometimes anchylosed. Neural canal broad, 

 trigonal. Ribs 1 1 — 1 1. The second cervical vertebra with a broad 

 lateral expansion, perforated at the base. First rib single-headed. 

 Lower jaw with a conical coronoid ))rocess. 



i. BALiEXOPTERA. — The lower lateral processes of the third to 

 the seventh cervical vertebrae with an angular projection on the 

 lower edge. Fingers short, the length of the fore-arm bone. 

 Scapula broad ; acromion and coracoid elongate, slender. 



1. B(ilie)ioplera roslrala (Pike Whale). Bahcna minor, Knox. 

 — Inhabits North Sea, ascending rivers. Thames, common ; 

 Humber, &c. Stuffed specimen (British Museum). This species 

 is at once known by its small size, and the large white patch on 

 the upper surface at the base of tlie pectoral fin. 



J. E. Gray. 



(To be continued.) 



An American Fossil Liou. — Professor Leidy has described a new species 

 of lion, under the name of Felis augustus, from fragments of teeth and jaws 

 found in Nebraska. It is about the size of a large tiger. 



