OCR Text |
Show 1 9 0 6 .] SYSTEM OF CERTAIN SPECIES OF ANURA. 1 0 1 7 beyond the origin of the gastrica sinistra. In B. mauritanicus and B. boreas the pancreas received two vessels from i t : in the former species both from near the base; in the latter, one from near the base, the other from more than halfway towards the gall-bladder. But I did not observe the presence of pancreatic branches in the other species, except in B. temporaria, where one occurred in twTo individuals and two in a third. Text-fig. 146. Rana catesbiana, $ (X f) . Portion of arterial system. Ventral view. An abnormal individual, with A. gastrica dextra absent. s1-^9.- Branches of A. subclavia. (The numbers have no morphological significance.) .s1 to wall of aorta. s- to Mm. levator anguli scapula and obliqiuis interims. s3 anastomosing with r. auricularis of A. cutanea magna. to hypoglossal nerve. s° to Mm. obliquus internus and trans-s6 through coracoid foramen to M. pectoralis sternalis, with a branch to M. subscapularis. s~ to M.pectoralis abdominalis and skin below pectoral girdle. s8 to 3rd spinal nerve. s9 to Mm. transverso-scapularis major verso-scapularis major. and deltoideus. (For explanation of other lettering, see p. 1033.) |