474 ME. p. W. BASSETT-SMITn ON l-^W- ^8, 



maxillipeds very slender. Only two pairs of thoracic limbs, both 

 biramose and biarticulate. 



(1) Clayella hippoglossi. $ . 



ClaveUa hippoglossi Kr. Tidsski-ift, i. 1837, p. 196, pi. ii. fig. 3. 

 „ „ Guerin, Icon, du Regne Anim. 1829-43, 



pi. X. fig. 7. 

 „ „ M.-E. Hist. Nat. Crust, iii. 1840, p. 494. 



„ „ V. Ben. Ann. So. Nat. 3 ser. vol. xvi. 1851, 



p. 100, pi. iii. figs. 5, 6. 

 In Coll Brit. Mus, 

 Host : Hippoglossus vulgaris. 



(2) Clavella mtjlli. 5 . 



ClaveUa mulli V. Ben. Ann. Sc. Nat. 3 ser. vol. xvi. 1851, p. 101, 

 pi. iii. fig. 4. 

 „ „ B.'S. Journ. M. B. Assn. Plymouth, 1896, p. 159. 



Host : gills of Mullus sp. 



(3) Clavella tekuis. $ . 



Clavella tenuis Heller, Reise d. Novara, 1865, p. 215 pi. xxiii. 

 fig.l. 



Host : gills of Monocentris sp. Philippines. 



G. 9. CiTBicoLA B.-S. (Helleria B.-S.) 



Head rounded. Thorax with three distinct segments bearing 

 lateral lobes but no dorsal plates. Genital segment very long. 

 Abdomen small, with two lanciform appendages. Anterior antennce 

 6-3ointed. Posterior antennae 3-joiated, strongly hooked at the 

 end. Second maxilliped very large, basal joint robust. Three 

 pairs of thoracic limbs, all rudimentary,, the first biramose, the 

 second uniramose, the third stump-like. 



"Male" smaller. Posterior antennae strongly prehensile'; no 

 thoracic lateral lobes. 



(1) Cybicola aemaxa. (S $ . 



Helleria armata B.-S. Ann. & Mag. N. H. ser. 7, vol. i. 1898, 



p. 10, pi. V. figs. 1, 2. 

 Cybicola „ B.-S. op. cit. ii. 1898, p. 371. 

 In Coll. Brit. Mus. 

 Host : Cybium spp. Indian seas. 



G. 10. PSEtTDOCLAVELLA B.-S. 



Head small, rounded. A single free thoracic segment \j'ithout 

 lobes or dorsal plates. Genital segment oval, 4 times as long as 

 cephalothorax. Abdomen very short. Caudal plates minute, 

 setiferous. Anterior antennae indistinctly 3-jointed. Posterior 

 antennae short, uncinate. Second maxillipeds slender. Pour pairs 

 of rudimentary limbs present, the first two biramose, third and 

 fourth from the genital segment stump-like. 



