Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . E. n flSCMER, DEL MELIOTVPt CO. PLATE 72. PLATE 72. Fig. 1-2. Ptehoplatea altavela. (Page 415). Except in what is more directly affected by the broadening of the body and the pectorals this genusexhibits no great departure from the other Dasybatidae. The copula is segmented, the propterygialsegment of the pectoral base is strong and elongate and reaches slightly beyond the antorbital, theceratobrancliials, cbr, are fused at their inward ends, and the basihyals form a large broad shield-likeplate. The shoulder g

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Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . E. n flSCMER, DEL MELIOTVPt CO. PLATE 72. PLATE 72. Fig. 1-2. Ptehoplatea altavela. (Page 415). Except in what is more directly affected by the broadening of the body and the pectorals this genusexhibits no great departure from the other Dasybatidae. The copula is segmented, the propterygialsegment of the pectoral base is strong and elongate and reaches slightly beyond the antorbital, theceratobrancliials, cbr, are fused at their inward ends, and the basihyals form a large broad shield-likeplate. The shoulder girdle has been mollified in several particulars; the pectoral bar, /ict, has widenedand the scapular bracts to the pro-nie-so-and metapterygia have elongated, though the .scapula, sc, fromwhich they extend outward, is comparatively little changed. Mem. Mus. Comp. Zool., Vol. 36. Plagiostomes. Plate ^O-rrrrfK

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1913