| OCR Text |
Show close to it, as in the first pair in R. hexadactyla. In cases noted the gonads were supplied as follows, the number of urogenital arteries present in each case being placed in brackets:- (1 ) T estes :- R. temporaria, one specimen (10 pairs): genital arteries from the first four on each side, B. mauritanicus (3| pairs) : from the first two on each side. R. catesbiana (6 pairs): mainly from the first artery on each side, but also partly from the second and third. R. tigrina (8 pairs): from the first artery on each side. (2 ) O var ie s :- B. boreas (5 pairs): from the first four on each side and also on one side from the fifth. R. hexadactyla (4^ pairs): from the first two on each side. R. clamata (4| pairs): from the first three on each side. 1 9 0 6 .] SYSTEM OF CERTAIN SPECIES OF ANURA. 1 0 2 3 Text-fig. 149. Rana hexadactyla, $ (X 2). Ventral view of Aa. urogenitales, &c. (For explanation of tlie lettering, see p. 1033.) In the three individuals in which they were examined, the oviducts were supplied by separate branches from the A a. renales, |
