Harriman Alaska series . of the head (Stimpson does notmention these tubercles in his description, but in. the specimens sent to the U. S. National Mu- FIG. ioo. Syniiiotca ntten * sp. nov. ^ --^ shape of the terminal Lx- ~\/ 1 ./ %>\ / segment of the body, itbeing much broader,and tapering very grad-ually to a broadlyrounded extremity,which has a slight me-dian notch or excavationin S. ritteri, while in S. consolidata the terminal segment of the body isnarrower and tapers to an extremity marked by two pronounced teethor angulations separated by a deep median notch. Specimens of the same si
Harriman Alaska series . of the head (Stimpson does notmention these tubercles in his description, but in. the specimens sent to the U. S. National Mu- FIG. ioo. Syniiiotca ntten * sp. nov. ^ --^ shape of the terminal Lx- ~\/ 1 ./ %>\ / segment of the body, itbeing much broader,and tapering very grad-ually to a broadlyrounded extremity,which has a slight me-dian notch or excavationin S. ritteri, while in S. consolidata the terminal segment of the body isnarrower and tapers to an extremity marked by two pronounced teethor angulations separated by a deep median notch. Specimens of the same size were taken in making the above comparisons. IProc. Calif. Acad. Sci., I, p. 97, 1856; Bost. Jour. Nat. Hist., VI, p. 503, Acad. Nat. Sci. Phila., p. 393,
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