79 



solchen , und für die Auffassung von Baur '), Leche 2 ) und Carlson 3 ), 

 die hierin ein Tarsalelement sehen , ohne dass ich darin mit Baedeleben 

 eine , von niedrigen Wirbelthieren ererbte sechste Zehe erkennen möchte. 

 Hierbei ist die hervorgehobene Beziehung der inneren Portion des 

 M. tibialis posticus zum „Tibiale" gewiss nicht ohne Bedeutung. Schliess- 

 lich sei nochmals hingewiesen auf das so verschiedene Loos, welchen 

 das überzählige Stück in der Hand und im Fuss unterliegt, während 

 sie völlig gleich waren in ihrer Anlage. 



d. Sternum. 

 (Tafel IX. Fig. 63, 64, 65, 66). 



In W. K. Paekee's bekannter Mongraphie über Sternum und Schulter- 

 gürtel 4 ) findet man folgende Beschreibung vom Xiphisternum bei Ma- 

 nis longicaudata : „The xiphisternum bifurcates between the well- 

 ossified first „metosteon" and grows backward as two flat, narrow, 

 extremely long „horns"; the left of these is eight inches eight lines 

 long, the right nine inches six lines; the rest of the Sternum two 

 inches two lines; the whole length, on the right side, being eleven 

 inches eight lines. These „horns" are feebly ossified endosteally; the 

 left ends in a free point, but the right hörn is continuous at its 

 supero-posterior end with three abdominal ribs sirnilarly ossified. In 

 front of the foremost of the abdominal ribs continuous with the 

 „hörn", is the first of this curious series (figs. 13 and 17, a. r. 1.); 

 it is unossified, and is fourteen lines in length. The second abdominal 

 rib (a. r. 2) is five inches six lines long ; the third (a. r. 3) live inches 

 two lines , and the fourth (a. r. 4) four inches. The feeble endosteal 

 substance is broken up into several patches in these abdominal ribs; 

 the space between them and the „xiphisternal hörn", from which 

 they have never been cleft at their upper ends, is Med with a pe- 

 culiar muscle, the counterpart of that which is seen to be quite 

 symmetrical in Pholidotus (fig. 12, xxm.) which shows the under 

 surfaces of xiphoid and its muscles". 



Zwei Figuren begleiten diese, wenig deutliche Beschreibung; irgend 



1) Baue: Morpholog. Jahrb. X. pag. 460. 



2) Leche: Mammalia in Bronn's Klassen & Ordnungen, pag. 613. 



3) A.. Carlson: Verhandig. d. Biolog. Vereins in Stockholm. 1890. 



4) W. K. Parker: Shoulder girdle and sternum in Vertebrata. Ray Soe. 186S, pag. 202 



