. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. PYCNOGONIDA. onal legs to the pairs of limbs found in the imago. In the genus Pycnogonum the first pair of ambu- latory legs, according to this, would be called Extrem. VI, the first five pairs of limbs having to be subtracted. The foregoing list and figure apply to the grown larva, the young, and the imago; with regard to the voung larva the following short list together with the figure of this larva, seen from the under side, must a. Cheliforus. b. First pair of embryonal legs.
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. PYCNOGONIDA. onal legs to the pairs of limbs found in the imago. In the genus Pycnogonum the first pair of ambu- latory legs, according to this, would be called Extrem. VI, the first five pairs of limbs having to be subtracted. The foregoing list and figure apply to the grown larva, the young, and the imago; with regard to the voung larva the following short list together with the figure of this larva, seen from the under side, must a. Cheliforus. b. First pair of embryonal legs. c. Second pair of eriibn,'Oual legs. d. Proboscis. e. First pair of ambulatory legs. f. Second pair of ambulatorj- legs. Fig. 2. Nymplwn robiistiim. Lar\'a. I shall now proceed to notice the outer organs, giving a short description of each as well as the reason of the terms I have chosen, and at the same time I shall cjnote as synonyms the corre- sponding appellations b}- the chief earlier authors. Proboscis [rostrum), fig. i ;•, and 2 (/. O. Fabricius: tubulus v. rostrum; Latreille: tuyau ou siphon d'une seide piece; later (Regn. anim. ed. II): bouclie; Leach: os tubulosum, or rostrum; Savigny: premier anneau du corps allonge et remplagant la tete (vestiges de machoires); Johnston: rostrum; Milne-Ed wards: tete; Erich- son: Zunge; Kroyer: Nceb (in the larva), later: Snabel (rostrum); Wilson: proboscis, or rostrum; Dohrn: Schnabel; Bohm: Rostrum; Hoek: trompe (probcscis); Adlerz: snabel; Hansen: Snabel, or Proboscis (proboscis); Sars: Snabel (proboscis), or ]\Iundsegment. The proboscis is the conical or almost cylindrical organ protruding from the anterior margin of the body, or from the lower side of it; it is always large or especially so in proportion to the body, and has at the point a trilobate mouth, leading to the trilateral pipe, which is closed behind Ijy a kind of plait, protruding to a rather sharp angle and working as a filtering The pro- boscis is co
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
