. Smithsonian miscellaneous collections. Fig. 13, A.—Gnathotrichus rctusnsLee.: Labium, ventral aspect. L, ligula; M, mentum; Pp, palpifer; of ligula; h, neck of mentum; c, ventralsetae of the palpifer; d, anterior part ofligula; c, first joint of palpus; /, second jointof palpus; g, third joint of Fig. 13, B.—Gnathotrichus rctusiisLee.: Labium, dorsal aspect. P, palpus; L, ligula; a, articulation of thelabium; b, base of ligula; c, dorso-lateralsetae of the palpifer; d, dorso-anterior setaeof the ligula; e, f, g, first, second, and thirdjoint of the palpus.

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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience