104 



Arenicolidae 



triannulum ; segmenta setigera 20 quorum sex anteriora siugulunique 

 postremum ebranchiata ; longitude 395-400 mm. ; latitude 20 mm." 

 Following this diagnosis is the reference, " Eug. Eesa, Ann , t. xxviii. 1." 

 The plate cited, which forms one of a series containing figures of 

 the Annulata collected on the voyage round the world of the frigate 

 ' Eugenie,' was prepared for issue in 1857, that is, ten years prior to 

 the publication of the diagnosis of the species ; but it was not 

 actually published till 1910, though copies were to be found previous 

 to this date in some libraries. In 1910 the original diagnosis was 

 reprinted, and issued with the plate, which was re-numbered xxix. 



Fig. 44. A. loveni. Type specimen ; a portion of the nineteenth chaeti- 

 ferous segment, the extra (twentieth) segment and notopodium (N -), 

 and a portion of the tail, seen from the right side. The most ventral 

 axis of the last gill (BR ' 3 ) is represented, but only the origins of the 

 other axes are shown ; P. Pit (possibly sensory, see p. 35) ; NR > 9 , Nine- 

 teenth neuropodium. 



Prof. Fauvel pointed out that, as far as could be ascertained from 

 the figures on this plate, A. loveni differed from a large example of 

 A. marina only in the presence of a ring, with a little tuft of chaetae, 

 between the last branchial segment and the tail, and suggested this 

 might be due to error of observation. He concluded that, on the 

 information available, it was impossible to decide whether A. loveni 

 should be regarded as a distinct species or merged with A. marina. 



The writer's examination of the type specimen, placed at his 

 disposal by Prof. Theel, showed that A. loveni is a valid species. 

 From the type, and four specimens received from Prof. Gilchrist, and 



