74 CHARLES BRANCH WILSON 
Remarks. This species is closely related to Lepeophtheirus longipes, but 
the body proportions are quite different, the furca is much longer and narrower 
and its branches are divergent. The rudiments of endopods are also present 
upon the first legs while the fourth legs do not reach the posterior margin of 
the genital segment. The abdomen has but a single joint instead of two, For 
these reasons it has not seemed presumptuous to create a new species although 
there is but a single specimen, especially since it was found upon an entirely 
different host. 
Chondracanthus clavatus Bassett-Smith. 
Host and record of specimen. A single female was taken from the 
gills of the clingfish, Godbzesox (Sicyases) sanguineus, Dec. 23, 1916 at Juan 
Fernandez (Masatierra). 
Remarks. This species has been found hitherto only in the waters about 
the British Isles upon such hosts as the lemon sole (Pleuronectes mucrocephalus) 
and a small dab or flounder. It has been fully described, first by Bassett- 
Smith in Annals and Magazine Natural History, series 6, vol. 18, 1896, p. 13; 
pl. 5, fig. 1, and afterward by T. Scott in the Eighteenth Annual Report of 
the Fishery Board for Scotland (1900), Pa165: pl. 7, flgsae5— 376 
The present specimen corresponds so closely with these published descrip- 
tions and figures that we have to conclude it is the same species although it 
comes from a far distant region and from an entirely different host. 
Lernanthropus sp. 
Host and record of specimen. A single female with egg strings was 
obtained from the gills of the sculpin, Scorpzs chilensts, Dec. 23, 1916, at Juan 
Fernandez (Masatierra). 
Remarks. Although this is probably a new species it is impossible to 
obtain drawings of the various appendages without destroying the specimen. 
It is better to wait for more material, therefore, before establishing the spe- 
cies. It will be closely related to Lernanthropus trachuri established by Brian 
in 1903. 
Explanation of Plates. 
Plate 2. Fig. 1. Dorsal view of /uanettia cornifera, gen. n.; sp. n. Fig. 2. Side view of head 
and first and second thorax segments. Fig. 3. Mandible. Fig. 4. Maxilliped. Fig. 5. 
Mouth parts of male. Fig. 6. First swimming leg of female. 
Plate 3. Fig. 7. Dorsal view of male of /wanettia cornifera. Fig. 8. Dorsal view of female 
of Caligus aesopus, sp. n. Fig. 9. Second antenna. Fig. 10. Third swimming leg. 
Plate 4. Fig. 11. Furca of Caligus aesopus. Fig. 12. First swimming leg. Fig. 13. Fourth 
swimming leg. Fig. 14. Dorsal view of female of Lefeophtheirus imteritus. Fig. 15. 
First maxilla. Fig. 16. Furea. Fig. 17. First swimming leg. 

