On two subfossil Whales discovered in Sweden. 



27 



The height is less than the transversal dimension. The lateral processes 

 are broadest about the middle and are at the base very slightly narrower. 

 The area with which the lower ridge on the corpus terminates at its ante- 

 rior extremity is plane. On the 11 th lumbosacral vertebra it its somewhat 

 convex. The articular-surfaces for the processus spinosus inferior in the 

 hinder part are very small (fig. 31 a). Dimensions of this vertebra: Breadth 

 of corpus 10-f-"; height of d:o 9y"; length of d:o 9-f-"; distance between ex- 

 tremities of lateral processes 2' 3' ; length of lateral processes 9"; breadth 

 of d:o 4f . 



The 2nd caudal vertebra (PI. V. figg. 38, 34, 35) is similar to the 

 first, but has somewhat shorter lateral processes, articular surfaces for the 

 processus spinosus inferior also in front, and along the under side of the 

 corpus, from about half its length backwards, it has a groove, which in its 

 back part at the right articular surface for the processus spinosus inferior 

 (figg. 33 and 34 a) presents the anomaly of having a tolerably long, com- 

 pressed process. Its dimensions, with the exception of the lateral processes, 

 are the same as those of the last vertebra. Distance between extremities of 

 lateral processes 2' If-". 



The 4«i caudal vertebra (PI. V. figg. 3G, 37, 38) is much mutilated, 

 but it seems however that its lateral processes were less, and along the 

 middle of the under side of the corpus it has a broad very shallow groove. 

 The hinder articular surfaces for the processus spinosus inferior are very 

 large. The processus mammillares are thick, and the distance between their 

 external borders 5-f-"; the processus spinosus is broad and short, with the 

 point rounded off, and a convex anterior edge. 



The 6 th caudal vertebra (PL V. figg. 39, 40, 41) is distinguished 

 from the 4 t!l by a shorter and higher corpus, with a broader groove on the 

 under side, an almost round foramen spinalc, a smaller distance between 

 the processus mammillares, and shorter lateral processes. Dimensions of 

 this vertebra: Breadth of corpus in front 11-}"; height of d:o 9-f-"; length of 

 d:o 9j"; distance between extremities of lateral processes 19"; height of ver- 

 tebra to the top of processus spinosus 17"; distance between external borders 

 of processus mammillares 4|-"; breadth of lateral processes 5 T ; and length 

 of d:o 5". 



The 7 th and 8 th caudal vertebrae are lost. That which we take to 

 be the 9 th (PL V. fig. 42) is distinguished by shorter corpus and smaller 

 processes; for the rising right branch of the aorta passes through a hole 

 (foramen) in the base of the right lateral process, and the corresponding 

 left branch passes along a tolerably deep furrow obliquely over the base 



