1899.] PASASITIC COPBPODA ON PISSES. 463 



Q-. 18. DiNEMATUEA Latreille. 



Carapace rounded, deeply excavated posteriorly. Frontal plate 

 distinct. Anterior antennae biarticulate. Eostruni 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. Genital 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) DlNEMATUKA PEODUCTA. $ . 



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

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

 Dinemoura lamnce Baird, Brit. Eutom. 1850, p. 286, pi. xxxv. fig. 7. 

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

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

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



Dinematoura elongata V. Bened. Bull. Ac. Eoy. Belg. 1860, 



p. 149, pi. xxiv. 

 „ c?V.Bened.Bull.Ac.Eoy.Belg.l892,p.231. 

 In Coll. Brit. Mus. 

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



(2) DiNEMATUKA FEEOX. $ . 



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

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



„ „ 8tp. & Lutk. Bidrag til Kund. 1861, p. 379. 



Dinematura 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) DiNEMATXJEA SEEEATA. $ . 



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

 pi. viii. fig. 4. 

 Host ;— ? 



(4) DiNBMATIJEA LATIEOLIA. $ . 



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

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

 In Coll. Brit. Mus. 

 Host : Oxyrhina [Lamna] glauca. 



(5) DlNEKATtrEA HAMILTONI. $ . 



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

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

 ^Host: "Shark." New Zealand. 



