154 BRITISH PAEASITIC OOPEPODA. 



Another Cetacean Pennella, P. crassicornis Steenstrup 

 & Liitken, was found attached to a bottle-nose whale 

 (Wyperoodon rostratus (Mull.)) captured south of the Faroes 

 in 1855."* In this form the horn-like appendages of the 

 cephalon are short and rather stout, and the whole animal is 

 much smaller. 



Genus 31. LERNSEOCERA Blainville, 1822. 



Body long and slender; head not distinctly de- 

 fined, provided with horn-shaped appendages which 

 are simple and more or less symmetrical in form. 

 Mouth situated at the apex of a small conical lobe in 

 the median Hue and projecting slightly forward of the 

 base of the lateral horn-like appendages. Genital 

 segment much elongated, becoming more or less 

 thickened posteriorly, and somewhat curved at the 

 distal extremity. Abdomen very small or obsolete. 

 Egg-strings straight and of moderate length. 



1. Lernseocera cyprinacea (Linn.). 

 (Plate L, figs. 1-5.) 



1761. Lemsea cyprinacea Linn. (77) vol. ii, No. 2100, pi. xi, fig. 2. 

 1783. Lernaea cyprinacea Barbut. (5) vol. i, p. 3, pi. vii, fig. 3. 

 1783. Lemsea (?) esocina Hermann. (61) vol. xix, p. 44, pi. ii, fig. 6. 

 1822. Lernseocera cyprinacea Blainv. (24) vol. xcv, p. 377. 

 1832. Lernseocera (?) cyprinacea Nordm. (89) p. 123, pi. vi, figs. 1-8. 

 1840. Lernseocera (?) eoscina M. Edwards. (43) vol. iii, p. 527, pi. xl, 

 figs. 13-15. 



1840. Lernseocera cyprinacea idem. (43) vol. iii, p. 527, pi. xl, fig. 16. 

 1850. Lerneocera cyprinacea Baird. (4) p. 343, pi. xxxv, fig. 13. 

 1868. Lernseocera (?) esocina Olaus. (34) vol. xxxi, p. 530. 



Female. — " Head furnished with four horn-shaped 

 appendages, which are somewhat long and slender. 

 The two outer or posterior are bifurcated ; the anterior 

 simple. 



" The thorax is very slender anteriorly, forming a 

 long neck, but becomes much broader posteriorly, and 

 when it terminates in the small abdomen, appears 

 obliquely truncate. The ovigerous tubes are cylin- 



* ' Bidrag. til Kundskab om detaabne Havs Synltekrebs og Lernaeer,' 

 p. 76 (separate copy), 1861. 



