Elementary text-book of zoology (1884) Elementary text-book of zoology elementarytextbo0101clau Year: 1884 462 CRUSTACEA. different form and adaptation in the various groups. As a rule, the anterior pairs are modified to assist in taking up food and are moved nearer the mouth ; these are the maxillipeds, which, with regard to their structure, hold an intermediate position between jaws and feet. In the Decapoda (fig. 362) three pairs of appendages have the form IML. 362.—Male and female of 'ilh seen from the ventral side. In the male the ambulatory and abdominal feet of the
Elementary text-book of zoology (1884) Elementary text-book of zoology elementarytextbo0101clau Year: 1884 462 CRUSTACEA. different form and adaptation in the various groups. As a rule, the anterior pairs are modified to assist in taking up food and are moved nearer the mouth ; these are the maxillipeds, which, with regard to their structure, hold an intermediate position between jaws and feet. In the Decapoda (fig. 362) three pairs of appendages have the form IML. 362.—Male and female of 'ilh seen from the ventral side. In the male the ambulatory and abdominal feet of the left side have been removed; in the female the am- bulatory feet of the right side and the maxillipeds of both sides. A' antennules; A', nntenna?; PI, scale of antenna ; Md, mandible vs ith palp ; MX', Jl/j', first and second maxillre Mxf to -l/j/:, the three pairs of maxillipeds ; Goe, genital opening ; Doe, opening of the green gland ; I', 1'', first and second abdominal foot; Or, eggs ; A, anus. of maxillipeds, so that there are only five pairs of legs left on the thorax. In the Stomatopoda the first five pairs of thoracic append- ages are modified to form maxillipeds and there are only three pairs
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