1899.] parasitic copepoda on fishes. 489 



(1) Sphteion l^vigatum. $ . 



Sjihyrion Icevigatus Cuv. Ecgne xiniin., Zooph. 1830, pi. xxxii. 



fig. 4. 

 Chondracantlius levis Quoy & Gai., Freyciiieb Reise Zool, 1824, 

 p. 541, pi. Ixxxvi. fig. 10. 

 „ „ Gruerin, Iconogr. Zooph. pi. ix. fig. 4. 



„ „ Stp. Overs. Vidensk. Selsk. Kjubenh. 



1869, p. 187. 

 Lesteira Jcroijeri Thomson, Trans. M.Z. Inst. vol. xxii. 1889, 



p. 370, pi. xxviii. fig. 4. 

 In Coll. Brit. Mus. 



Hosts : Gadus sp., Cape of Good Hope (Q. & G.) ; Oenyptcrus 

 hlacodes, N.Z. (Thorns.). 



(2) Sphykiok lumpi. $ . 



Lestes lumpi Kr. Danmk. Fiske, ii. 1845, p. 217. 

 Lesteira lampi Kr. Bidrag til Kundskab, 1863, p. 325, pi. xviii. 

 fig. 5. 

 „ „ Stp. Overs, \idensk. Selsk. Kjobenh. 1869, 



p. 182, pi. ii. fig. 5. 

 - In Coll. Brit. Mus. 



Host : Gyclopterus lumpus. Denmark ; '? Dungeness. 



G. 2. Medesicaste Kroyer. 



Head minute, rounded, with both pairs of antennse, and two 

 pairs of minute uncinate maxilUpeds and mouth in front. Thoracic 

 portion very elongated, divided into two parts, the anterior being 

 the broader, having at its base two wing-like processes, the 

 posterior portion cylindrical. Genital segment as broad as long, 

 robust, deeply emarginate in front and behind. Abdomen 

 small, biarticidate. Egg-sacs long, club-shaped. One pair (?) of 

 bilobed thoracic limbs placed close behind the head. 



Male pigmy, like those of Ghondr acanthus. 



1. Medesicaste triglarum. § . 



Medesicaste triglarum Kr. Bidrag til Kundskab, 1863, p. 312, 

 pi. xviii. fig. 1. 



Host : Trigla Jiirundo. Kattegat. 



2. Medesicaste penetrans. $ . 



Medesicaste penetrans Heller, Eeise d. IN'ovara, 1865, p. 235, 

 pi. XXV. fig. 1. 



Host : Trigla capensis. Cape of Good Hope. 



G. 3. Oralien, gen. nov. 



Head rounded in front, carrying there the two pairs of antennse, 

 and lateral lobe-like projections ; produced posteriorly as a 

 cylindrical neck more or less long, at the juncture of which with 



