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Show 1885.] DR. ST. G. MIVART ON THE ARCTOIDEA. 349 that of p^i is 7-7, of^-1 8*7, breadth of ^-x 8*7, length of ^-2 of j|-jl 10*6, and of ^~2 9*7. Comparing these proportions with those which exist in iEluroids and in the Dogs as exemplified by the Dingo, we find that the cervical region of the Raccoon, 16*9, is much less than that of the Dog, 26*2, a proportion only exceeded by Cynogale (26*6) and Viverricula (27*4) amongst the Viverrida, and not equalled by any Feline form, though it is exceeded by the Hyaenidae (27'9-32-9). The Raccoon's neck is shorter that that of any iEluroid, being most nearly approached by Arctictis, in which it is 18*8 compared with the spine at 100. Similarly the dorsal region of the Raccoon (41-9) exceeds that of most iEluroids, the only relatively longer dorsal regions being those of Paradoxurus (43-8), Arctictis (44-8), Cynogale (43-1), Suricata (45*4), Galidictis (42'2), and Crocuta (45-6) ; while it may be as small in Genetta as 34*4; that of the Dingo is 46-1-the longest of all. The length of the lumbar region, which is relatively 28*7, is smaller than in any Cats (where it ranges from 32-5 to 37'4) and smaller than in any other IEluroids except Fiverricula 232, Arctictis 27*2, Cynogale 25*0, Crossarchus obscurus 26*3, Suricata 258, and Crocuta 17*0, which is the smallest of all. In the Dingo it is 21*4. The sacrum (12*3) is of exceptional length, being twice that of the Dingo (6 0), while in the Cats it ranges from 7'8 to 5-5. The shortest iEluroid sacrum is that of Cynogale (5*1), and the longest that of Crossarchus obscurus, 10*9. The relative length of the pectoral limb, 74*5, greatly exceeds that of the Dingo (68*4). In the Cats it may range from 61 to 78. It exceeds that of every non-feline iEluroid, being most nearly approached by Proteles, where it is 74 0. The length of the pelvic limb, relatively 91*7, greatly exceeds that of the Dingo, 78*5, and is only exceeded by that of some Cats, where it is 93-8. In non-feline iEluroids it ranges from 55'6 (Fiverra) to 79*9 (Suricata) and 80" 1 (Galidictis). The relative length of the humerus, 27'4, is greater than that of the Dingo (23-8), and greater than that of any iEluroid except some Cats, where it may be 28*5. In Viverra it is but 16*3. Similarly the radius, 28*7, is greater than that of the Dingo (24*6), or "of any iEluroid, where it ranges from 27*4 (some Cats) down to 13*8 (Viverricula). The longest (third) metacarpal, 7*6, is shorter than that of the Dingo (9*2),orof most Cats,where it maybe 10*9, orof theHyaenidse, where it may be (in Proteles) 12*5. Ou the other hand, it may be as short in the Viverrida as 4*2, which is its relative length in Cynogale. The ungual phalanx, 2*7, is about the proportion of that of the Dingo, which is 2*5 ; that of the relatively longest Viverrine being 4*5 (Suricata), and the shortest 13 (Viverra and Genetta). The relative length of the skull from the basion to the premaxilla is 28*2, which exceeds that of the Dingo or any Dog or Cat and |