290 A. Smith Woodward — On Squafina acanthoderma. 



The new specimen from Nusplingen has been acquired by the 

 British Museum, and is shown of about one-eighth the natural size in 

 the accompanying photograph (Plate X). It measures 1-12 m. in 

 total length, and is exposed from the dorsal aspect, exhibiting the 

 complete outline of the fish, with all the fins. The tail is observed 

 to occupy about one-half the total length of the fish ; and the 

 maximum width across the pectoral fins is somewhat less than half 

 this length. The cranium and cartilages of the jaws, so far as they 

 can be distinguished, are essentially identical with those of the 

 recent Squatina ; but the dentition is unfortunately not displayed. 



Fig. 1. — Squafina alifera (Miinster). 



Lithographic Stone (Lower Kimmeridgian) : Eichstadt, Bavaria. 



(From Von Zittel's " Handbuch.") One-tenth nat. size. 



The vertebral column is complete, comprising about 150 well- 

 calcified centra ; and there are traces of the slender abdominal ribs 

 in the region of the pelvis, while some of the laminar neural spines 

 are seen both at the base of the tail and near its extremity within 



