1899.] PABASITIC COPEPODA ON PISHES. 463 



G. 18. DiNEMATUEA Latreille. 



Carapace rounded, deeply excavated posteriorly. Frontal plate 

 distinct. Anterior antennse biarticulate. Kostrum long. Second 

 maxillipeds massive and nodose. First free thoracic segment with 

 a small lateral lobe ; second of a square shape, free ; third with 

 two large dorsal plates. Grenital segment oblong, winged, pos- 

 teriorly produced in two short lobes and a small median process, 

 partially covered by two narrow plates. Abdomen elongated, with 

 lateral processes and two large foliaceous caudal appendages. All 

 the thoracic limbs are biramose, the first biarticulate, the second 

 and third triarticulate, all with plumose hairs on the margin ; the 

 fourth pair are changed into lamellar processes, 



(1) DiNEMATURA PRODUCTA. $ . 



Oaligus productus Miill. Entomost. 1785, p. 132, pi. xxi. fig. 3. 

 Pandarus lamiice Johnst. Mag. Nat. Hist. 1835, viii, p. 203. 

 Dinemoura lamnce Baird, Brit. Entom. 1850, p. 286, pi. xsxv. fig. 7. 

 Dinemaiura jproducta Stp. & Liitk. Bidrag til Kundskab, 1861, 

 p. 34, pi. vii. fig. 13. 

 „ lamna Kr. Bidrag til Kundskab, 1863, p. 179. 



Dinematoura elongata V. Beued. Bull. Ac. Boy. Belg. 1860, 

 p. 149, pi. xxiv. 

 „ dV.Bened.Bull.Ac.Eoy.Belg.l892,p.231. 



In Coll. Brit. Mus. 



Hosts : Lamna cornubica ; Scymnus glacialis [Lsemargus boreaKs]. 



(2) DiNEMATURA FEEOX. $ . 



Dinematura ferocc Kr. Tidsskrift, ii. 1838, p. 40, pi. i. fig. 5. 

 Dinemoura feroco M.-E. Hist. Nat. Crust, iii. 1840, p. 465. 



„ Stp. & Liitk. Bidrag til Kund. 1861, p. 379. 

 Dhiematura carcJiarodonte Thomson, Trans. N. Z. Inst. 1889, 

 vol. xxii. p. 360, pi. xxvi. fig. 2. 

 In Coll. Brit. Mus. 

 Host : Scymnus microcephalus [Laemargus borealis]. 



(3) Dinematura serrata. $ . 



Dinemoura serrata ICr. Bidrag til Kundskab, 1863, p. 176, 

 pi. viii. fig. 4. 

 Host :— ? 



(4) DiNBMATTJBA LATIPOLIA. $ . 



Dinematura latifolia Stp. & Liitk. Bidrag til Kundskab, 1861, 

 p. 38, pi. viii. fig. 16. 

 In Coll. Brit. Mus. 

 Host : Oxyrhina [Lamna] glauca. 



(5) Dinematura hamiltoni. 5 . 



Dinematura hamiltoni Thomson, Trans. N. Z. Inst. vol. xxii. 1889, 

 p. 357, pi. XXV. fig. 1. 

 !^ Host: "Shark." New Zealand. 



