Memoirs of the National Academy of Sciences . om within outward. ?In accordance with an English author, I think, but whose name escapes me, I use the term rudiment in the«ense of the German word Aulage, and vestige for an organ which has or is undergoing reduction, degeneration, oratrojjhy. I am aware that the word Aulage has no English equivalent, but can scarcely accept the wordfundament as better than rudiment. We may, then, speak of germs or rudiments, and of rudimentary whenreferring to the incipient organs of the young or adult, regarding organs as those on the point of atroph
Memoirs of the National Academy of Sciences . om within outward. ?In accordance with an English author, I think, but whose name escapes me, I use the term rudiment in the«ense of the German word Aulage, and vestige for an organ which has or is undergoing reduction, degeneration, oratrojjhy. I am aware that the word Aulage has no English equivalent, but can scarcely accept the wordfundament as better than rudiment. We may, then, speak of germs or rudiments, and of rudimentary whenreferring to the incipient organs of the young or adult, regarding organs as those on the point of atrophyfrom disuse. The term blast for Aulage I should accept for emliryonic structures iu their incipient or germinal•condition. - In his paper on the larva of Eriocephala, etc. (Trans. Ent. Soc. London, 1894, p. 335), Dr. Chapman separatesthe old genus Micropteryx into two families: Eriocephalida .and Microptcrnyidw. His groui> Eriocephalida I Iiaveregarded as comprising the type of the suborder Lepidoptera hiciniata or Fig. 2.—Maxilla ofEriocephala caltheUa;2. lacinia; g, galea;, maxillary pal-pus; St, stipes; c,-cardo.—After Walter. .AIEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 59 The outer exterior edge ol tlie tube forms a strongly chitiiious seiuicircle which, hecoiniug thinner, finally passesinto the delicate membranous hinder -n-all. Also anteriorly a delicate membrane ai)i>ears to cover the chitiuousl)ortion. We have here in opposition to the vreak naked iindi-rlip represented by a triangular ehitinmis )ilate in otlierLepidoptera a true ligula formed by the coalescence of the inner lobes of the second niaxilhe into a tube, as inmany Hymenoptera. and with free external lobes which correspond to the jjaraglossa of Hymenoptera. Walter lias also detected a paireil straetuie which he regards as the liypoi)haryiix. As hestates: A iiortiou of the inner surface of the tube-like ligula is covered by a furrow-like band which, close to tlieinner s
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