at the elbows, then tapers gradually making the outline of the back between the first pair, convex. The upper edge of the peduncle a little behind arms is fairly straight. Below the edge of the peduncle from pectorals to arms is fairly straight, from that point gradually swelling outward to form belly. The belly & breast line rise gradually to throat. Variations in Head shape The offsprings show from the mnd is a little longer in no 27 & than in no 28 & - for the former the head flattens opposite the corner of the mouth. In 28 & the flattened area begins a little anterior to this. That is the "forehead" is higher in the slope more abrupt. In 29 & the head outline is considerably different. The slant is more gradual and also it is not longer, tho The portion of body anterior to the fins is decidedly more depressed giving the head a much sharper appearance. The forehead is much lower. This sharpness to the ant- eir portions of the body is accentuated by the fact that the body behind the fins is much thicker than in the others. This is perhaps a sexual difference