152 BRITISH PARASITIC COPEPODA. 



the same paper states that Dr. Baird informed him that he had 

 " examined a specimen of Pennella from a sun-fish captured 

 at Megavissy, Cornwall, which he (Dr. Baird) refers to 

 P. filosa Linn/' We have little doubt that the specimens 

 obtained at the places mentioned were all referable to the 

 same species. 



The name Pennella filosa sometimes applied to the sun-fish 

 parasite appears to have been given to it under the supposi- 

 tion that it and the swordfish Pennella were identical ; thus 

 far, however, there is no satisfactory evidence to show that 

 they are so, and, till such evidence is forthcoming, the name 

 Pennella filosa (Linn.), as pointed out by Steenstrup and 

 Lutken, should be retained for the form found on the sword- 

 fish. Percival Wright's Pennella orthagorisci should also for 

 similar reasons be accepted for the Pennella of the sun-fish. 

 The Eev. T. R, R, Stebbing, in Part III of his work on 

 " South African Crustacea" (1905), in a short discussion on 

 Pennella, remarks that "the description given by Linnaeus 

 can scarcely be said to have any specific value apart from 

 the name of the host, so that no injury is done him by leav- 

 ing his specific name in abeyance until a Pennella infesting a 

 Xiphias has been again observed. For the parasite of the 

 sun-fish an appropriate name is available, which appears to 

 have escaped recent attention." * 



In January 1908, M. Alexandre Brian published an in- 

 teresting paper entitled "Note preliminaire sur les Cope- 

 podes parasites des poissons provenant des campagnes 

 scientifiques de S.A.S. le Prince Albert l er de Monaco ou 

 deposes clans les collections du Musee Oceanographique." 

 This jSTote forms Bull. No. 110 of the Oceanographical Insti- 

 tute. The author describes with illustrative figures an adult, 

 and several immature, female Pennellse under the name of 

 " Pennella filosa Cuvier" which were obtained on a sun-fish 

 captured in lat. 39° 56' 10" N., long. 34° W., 19th July 

 1887, and which seem to be identical with Wright's P. 

 orthagorisci. He also describes a "Pennella- sp.?" A single 

 adult obtained " dans la peau du ventre d'un Xiphias gladius " 

 captured at Saint-Jean-sur-Mer, 11th March 1905. May 

 this Pennella not be referable to the species described by 

 Linnaeus ? It is more than twice the size of the adult female 

 recorded from the sun-fish ; the shape of the head and the 

 form and size of its two horn-like appendages are also very 

 different. The length of this specimen is described as 212 



* ' Marine Investigations in South Africa/ " South African Crustacea," 

 pt. iii, p. 118. 



