ILLUSTRATIONS. XLVII 



Page. 

 FIG. 596. Argeia pugettensis. a, Dorsal view of immature.female. b, Ventral 



view of same. (Second post-larval stage) 550 



597. Argeia pugettensis ( Cryptoniscan stage ) 550 



598. Parargeia ornata ( After Hansen ). a, Dorsal view of female, b, 



Ventral view of female, c, Leg of seventh pair of female, d, 



Leg of seventh pair of male, e, Head of female (ventral view). 



/, Dorsal view of male, g, Head of male (ventral view) 552 



599. Prohopyrus pandalicola. a, Dorsal view of female, b, Ventral 



view of same 554 



600. Probopyrus pandalicola. Leg of sixth pair of adult female 555 



601. Probopyrus pandalicola. Male 555 



602. Probopyrus floridensis. o, Dorsal view of female, b, Ventral 



view of same 556 



603. Probopyrus floridensis. First lamella of rnarsupium 556 



604. Probopyrus floridensis. Leg of sixth pair of adult female 556 



605. Probopyrus floridensis. Male 556 



606. Probopyrus bithynis. a, Dorsal view of female, b, Ventral view 



of same 557 



607. Probopyrus bithynis. First lamella of marsupium. Right side . . . 557 



608. Probopyrus bithynis. Leg of sixth pair of adult female 558 



609. Probopyrus bithynis. Male 558 



610. Probopyrus bithynis. o, Dorsal view of female, b, Ventral view 



of same 558 



611. Probopyrus bithynis. Male 559 



612. Probopyrus alphei. Dorsal view of female 560 



613. Probopyrus alphei. Male 560 



614. Probopyrus latreuticola. a, Male, b, Female 560 



615. Probopyrus latreuticola. "First incubatory lamella 561 



616. Probopyrus latreuticola. a, First pleopod (showing both branches). 



b, Second pleopod. c, Third pleopod. d, Fourth pleopod 561 



617. Bopyriscus calmani. a, Female, b, First incubatory lamella 562 



618. Bopyriscus calmani. First pleopod. Female 562 



619. Bopyriscus calmani. Male 562 



620. Bopyrina abbreviata. Dorsal view of female 563 



621. Bopyrina abbreviata. First lamella of marsupium 564 



622. Bopyrina abbreviata. Maxilliped 564 



623. Bopyrina abbreviata. Male 564 



624. Bopyrina urocaridis. . Dorsal view of female, b, Ventral view of 



same 565 



625. Bopyrina urocaridis. Maxilliped 565 



626. Bopyrina urocaridis. First lamella of marsupium, right side 565 



627. Bopyrina thorii. o, Dorsal view of female, b, Ventral view of 



same 566 



628. Bopyroides hippolytes (After Sars). a, First incubatory plate, b, 

 Palp of maxilliped. c, Max lliped. d, Head of male (ventral 

 view), e, Anterior part of specimen of Spirontocaris polaris in- 

 fested with this parasite. /, Leg. g, Anterior part of head of 

 female (ventral view). /;, Dorsal view of female, i, Ventral 



view of female, j, Dorsal view of male 567 



629. Bopyroides hippolytes. First incubatory lamella of specimens 

 found on: a, Spirontocaris lainellicornia from Port Townsend Bay, 

 Washington, b, Spirontocaris polaris from Aberdore Channel. 



c, Spirontoearis polaris from Grand Menan, New Brunswick, d, 

 Spirontocaris spinus from off North Head, Akutan Pass, Alaska . 568 



2858905 iv 



