. Text-book of embryology. Embryology. VUI AETHEOPODA 209 the Oalyptopis m having two pairs of maxillipedes developed, and a rudiment of the third, and in having small rudiments of appendages even on the thin posterior thoracic segments; also in having a median rostral and two postero-lateral spines on the carapace, and in having long-stalked compound Fig. 156.—Zonea ot Penaeus, ventral view. (After Claus.) ma;pi-3, first, second, and third maxillipedes ; pi, rudiments of pleopods ( abdominal appendages); r, rostrum ; th, rudiments of hinder appendages of thorax ; ur, uropods (last
. Text-book of embryology. Embryology. VUI AETHEOPODA 209 the Oalyptopis m having two pairs of maxillipedes developed, and a rudiment of the third, and in having small rudiments of appendages even on the thin posterior thoracic segments; also in having a median rostral and two postero-lateral spines on the carapace, and in having long-stalked compound Fig. 156.—Zonea ot Penaeus, ventral view. (After Claus.) ma;pi-3, first, second, and third maxillipedes ; pi, rudiments of pleopods ( abdominal appendages); r, rostrum ; th, rudiments of hinder appendages of thorax ; ur, uropods (last abdominal appendages). The Zoaea of the shrimps and prawns ( Caridea) agrees with the Zoaea larva of the Penaeidea in possessing these spines on the carapace, but it differs from them and agrees with the Zoaea of the higher Decapoda in two respects; (1) in having the exopodite of the second antenna converted into a flat unjointed scale (squame), as in the adult Decapod, (2)^ in having the endopodite of this appendage much shortened so that this limb is no longer locomotor in function. VOL. I P. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original MacBride, E. W. (Ernest William), 1866-1940; Kerr, John Graham, 1869-; Heape, Walter, 1855-1929. London : Macmillan
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