1899.] PARASITIC OOPBPODA ON FISHES. 481 



Lemceoeera esocina M.-E. Hist. Nat. Crust, iii. 1840, p. 527, 

 pi. xl. figs. 13, 15. 

 „ cyprinacea M.-B. op. cit. 1840, p. 527, pi. xl. fig. 16. 



„ esocina Henn. Naturforscher, xix. 1783, p. 44, pi. ii. 



fig. 6. _ , 

 „ „ C. Claus. Zeitschr. gesammt. Naturvviss. xxxi. 



1868, p. 530. 

 „ „ Eichiardi, Atti Soc. Toscana di Sc. Nat. iii. 



1876. 

 Hosts : Carp, Perch, Roach, &c. 



(2) Leen^oceea ceuciata. 5 • 



Lemceoeera cruciata Lesueur, Journ. xlc. Philad. 1824, iii. p. 286, 

 pi. xi. fig. 4. 

 „ ,. M.-E. Hist. Nat. Crust. 1840, iii. p. 527. 



„ „ Eichiardi. Atti Soc. Toscana di Sc. Nat. iii. 



1876. 

 Host : Ciclila cenea, Les. Lake Erie. 



(8) Leen^ocera phoxikacea. 5 . 



Lemceoeera pJioocinacea Kllr. An. Mus. Wien. 



„ ,, Kr. Bidrag til Kundskab, 1863, p. 325, 



pi. xviii. fig. 3. 

 Host : Phoocinus marsilii [Leuciscus phoxinus]. 



(4) Lern^ocera lagenula. 2 • 



Lemceoeera lagenula Heller, Eeise d. No vara, 1865, p. 246, 

 pi. xxiv. fig. 9. 

 Host :— ? Brazil. 



(5) Lern^ocera pomotidis. 2 • 



Lemceoeera pomotidis Kr. Bidrag til Kundskab, 1863, p. 323, 

 pi. XV. fig. 5. 



Host : gills of Pomotis sp. New Orleans. 



(6) Leen^ocera gasxerostei. 5 . 



Lemceoeera gasterostei, Briihl, Inst, d Univ. Pest. 200, 1860. 



„ „ Heller, Eeise d. Novai'a, 1865, p. 246. 



Host : Gasterosteus aculeatus. 



(7) Lern^oceea catostomi. 2 • 



Lemceoeera eatostomi Kr. Bidrag til Kundskab, 1863, p. 321, 

 pi. xviii. fig. 4. 



Host : Ccctostomus macrolepiclotus, Les. Mississippi. 



G. 2, Therodamus Kroyer. 



Head rounded, without horn-like appendages ; mouth opening at 

 the base of the long slender neck. Thorax much elongated, indis- 



