1899.] pABAsmc coPEPortA os fishes. 441 



In the family Lernseidae, I have united the two genera Lernce- 

 enicus and Lernceonema under tlie older name, following the views 

 set forth in the able paper by Eichiardi in 1876. Five genera of 

 this family are represented by single species. 



In the" family Chondracanthid^e (p. 488). the older name of 

 SpJujrion has been retained for Krciyer's Lesteira. Two species are 

 given, specimens of both being now in the British Museura — one, 

 the larger (by far the largest of all these Copepod parasites), is 

 from New Zealand, and is probably of the same species as that 

 obtained by Guerin off the Cape of Good Hope, having few lobed 

 processes on the float-like head. The second was taken of 

 Dungeness ; it is much smaller, with a greater number of lobe-hka 

 processes, and is described as S. lumpi Kr. 



The position of the long known OJiondr acanthus iriglce has 

 been for many years a disputed point. Linjiseus placed it \Adth 

 the Lernseas ; Blainville described it as a Lernentoma, Milne- 

 Edwards as a OJioiidracmtJms, Heller thought it probably a species 

 of Medesicate, and J. Steenstrup placed it between Lesteira and 

 Iledcsicate. The animal differs from e\'ery other, except TJiero- 

 damus, in having the anterior part of the head with the hook-lil\e 

 posterior antennie separated by a long neck-like process from the 

 mouth, which is placed at the juncture of tliis with the thoracic 

 portion — a peculiarity pointed out by Milue-Edw-ards and others, 

 differing thus from Medesicate and Chondracanthus ; I have there- 

 fore placed it iu a genus of its own — Oralien. 



In the family Lernseopodidse, as I have pointed out before, 

 it is impossible to differentiate the genus Brachiella from Anchorella 

 by the female alone, the union, complete or otherwise, of the 

 second pair of maxillipeds not jjeing characteristic, though the 

 males are quite distinct, and should be always looked for and 

 recorded. Many of the AncJiorelJce are very superficially described, 

 and are very indefinite. The genus Thysanote has been madeto 

 embrace a number of pecuhar forms which have been placed with 

 Brachiella. 



The genus Cestopoda of Kurz has been added. While in India 

 I obtained on two occasions specimens of this peculiar genus 

 from different fishes ; these have not yet been described. I have 

 provisionally placed here the Naohranchia cygniformis of Hesse, 

 but it is insufficiently described. 



Family I. EUGASILID^. 



Cephalothorax pyriform or flattened, first segment the largest ; 

 nearly or ^^ holly provided with limbs. Anterior antennae of 

 moderate length," 5- or 6 -jointed, ahke in both sexes. Posterior 

 antennffi with 3 or 4 joints. Second maxillipeds in the form of 

 hooks, generally 3-jointed. Fifth pair of thoracic limbs one- 

 branched or sometimes rudimentary. Eye median, with two 

 lenses. Sex-organs paired. Female with "two egg-sacs. Toung 

 as a free-swimming larva. Male smaller than female and less 

 freely locomotive. 



