File:Hawaiian Atyidae (1929) (17947704045).jpg

Title: Hawaiian Atyidae
Identifier: agz2540.0001.066.umich.edu
Year: 1929 (1920s)
Authors: Edmondson, Charles Howard, 1876-1970
Subjects: Atyidae (Crustacea); Crustacea
Publisher: Honolulu, Hawaii, The Museum
Contributing Library: University of Michigan
Digitizing Sponsor: University of Michigan

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Figure 4.—Morphological changes in chelipeds following mutilation (a-d) and lar- val development (e-o) in Atyidae (unshaded areas of chelipeds represent regenerated portions of appendages), a, h, Conversion of Atya hisulcata into Ortmannia henshawi by mutilation of chelipeds: a, extremity of second right cheliped of Atya before mutila- tion ; h, the same appendage after the first molt following mutilation, showing conversion to the Ortmannia form, c, d, Transformation of Ortmannia henshawi into Atya bisulcata through mutilation of chelipeds: c, second right cheliped of Ortmannia before mutilation; d, the same appendage following the first molt after mutilation, showing the Atya form. e, f, Form of rostrum and front margin of carapace of young specimens: e, specimen one month old; /, specimen four months old. g-l, First and second left chelipeds of a young specimen hatched from Atya hisulcata, showing disappearance of exopodites: g, h, first and second chelipeds, respectively, of a specimen about five days old, after molt' of May 22) i,j, the same after molt of June 3; kj, the same after molt of June 11. m-o, Develop- ment of swimmerets of a young specimen: m, posterior surface of first left swimmeret of specimen 8 mm. long; n, the same when the specimen has reached a length of 14.5 mm.; o, the same when the specimen has attained a length of 16 mm., the male charac- teristic now being indicated, (ho, Basopodite; ca, carpus; da, dactylus; en, endopodite; ex, exopodite; is, ischium; me, merus; pr, propodus; se, setae.)

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