from the Xort/i Sen an'l aiJj ivnl yarts. 21.") 



the caudal ie;;;ion tlic tVct Ijccorne lateral in position, Uit never 

 ventro-lateral. Tlu^ biaiicliia? coininetice at tlu: Hllli pair of 

 feet, and appt'ar as little conical processes wliieli increase in 

 size from before backward. Tliey are nearer tlie mid-dorsal 

 line tliau the dorsal cirri, but between the twentieth and 

 thirtieth segnjonts they leave this region and approacli the 

 cirri. This, however, 1 find to be variable. Along with the 

 increase in size of the hranchi;o there is a corresponding in- 

 crease in the size of the dorsal cirri, and this increase is espe- 

 cially marked at tlie base of the organs. Each branchia has 

 two vessels whieli are linked together by a numerous series 

 of connecting-trunk'^. Tlie bristles, spines, and papillaa of 

 the feet all conform with the Monograph *. 'Jhe segmental 

 organs are limited, but appear more prominently in posterior 

 two-thirds of the bmly. All the examples iwa immature. 

 However, (pioting from the ^lonograph f, " ho Bianco found 

 Ariciafcetida, Clap., ripe from January to June at Naples. 

 The eggs are of a greenish colour and deposited in a cylin- 

 drical vermiform mass of mucus." 



The contents of the gut were composed of fine mud 

 particles, debris, and vegetable matter. 



Family Opheliidae. 



Genus Ammotrypane. 



Ammotri/pane aulogaster, H. Rathke. 



Twenty-two. specimens of this form, which has a gener.il 

 distribution, are present in the collection, but, like many 

 others, they have suffered from the laboratory fire mentioned 

 it> previous re[)orts. The tube containing the animals has no 

 label, and consequently no depth nor locality can be given. 

 The animals them-selves are badly seorelied and very nmoh 

 shrivelled. This species is found off the shores of the British 

 Isles, but extends much farther north. Izuka makes no 

 reference to either tlie family or the specie-*, but in the 

 'Challenger' Report there is a form, Ammotri/pane (jraclle, 

 dredged otf Japan, which clo.SL-ly resembles the Euro[)eau 

 species. 



The head is pointed, fairly large, but devoid of tentacles, 

 tentacular cirri, anil eyes. The mouth is ventral in position 

 and a|)pears as a fairly large longitudinal slit, which continues 

 as a ventral groove to the posterior end of the animal. 



The body is linear, the longest specimen mea.-iuring about 



• Vide ' Monograph,' vol. ii. part ii. p. 500. 

 1 Ibid. ■p. rjQL 



Ann. ct- il/t/y. .V. JJist. iSer. 8. Vol. xv. 17 



