218 University of California Publications. [ ZooLocy 
Fam. CoRYCAEIDAE. 
Corycaeidae Giesbrecht, 1892, p. 83. 
Paired eyes highly developed in both sexes or in females, 
with large cuticular lenses and pigment bodies. 
2 The broad front and the two chitin lenses, sometimes con- 
tiguous and sometimes separated, are characteristic of the body 
form (fig. 57b; 62.). Anterior portion of the body may be coni- 
eal (Corycaeus fig. 62) or eubieal (Copilia) or oval and de- 
pressed (Sapphirina fig. 58a, b; 59a. Corina). The number of 
segments may be 10 (Sapphirina), 8 (Corina, Copilia) or 7 to 4 
(Corycaeus); each part of the furea with only four or five 
bristles. Anterior antennae 3- to 6-jointed, posterior antennae 
(fig. 8c) with at least a heavy terminal hook; mandibles reduced 
to blade; maxillae oval or elongate platelets, with 3 to 5 bristles; 
anterior maxillipeds as in the Oncaeidae, posterior 3-jointed, ter- 
minal hook strong. Rami of swimming feet 3-jointed, except in 
the case of the inner ramus of the fourth pair, which shows all 
transitions from the 3-jointed ramus to a rudiment consisting of 
a single bristle. 
4 Sexual peculiarities in form of body and posterior maxil- 
lipeds, also in the other appendages and more striking than in 
the Oncaeidae. 
1. Genus Sapphirina J. V. Thompson. 
Sapphirina J. VY. Thompson, 1829. 
Sapphirina Templeton, 1836. 
Sapphirina Dana, 1848, p. 41; 1849, p. 281; 1852, p. 1234. 
Sapphirina Claus, 1863, p. 149. 
Sapphirina Haeckel, 1864, p. 102. 
Sapphirina Brady, 1883, p. 121. 
Sapphirina Giesbrecht, 1892, pp. 84, 618, 761. 
Sapphirina Wheeler, 1899, p. 190. 
Body depressed: anterior and posterior portions of body 
with 5 segments in the female, middle abdominal segments broad- 
ened. Furea leaf-like, with five bristles. Rami of feet broad, in 
first, second, and third pairs about equal in length; inner ramus 
of fourth pair with 3 joints, of varying relative size; fifth pair 
of feet with two bristles. Male with leaf-like broadened seg- 
ments in trunk, iridescent; no general sexual peculiarities in 
mouth parts and swimming feet. 
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