158 MR. F. E. BEDDARD ON WORMS [Feb. 16, 



such as I have described in other species of PerichcBta^. They 

 appear, however (Plate X. fig. 1), to arise rather from the dorsal vessel 

 than from the septum ; each gland is somewhat pear-shaped, with a 

 narrow stalk which approaches that of its fellow. 



The sjierm-sacs are in segments xi., xii. 



The atria are very extensive ; the glandular part occupies segments 

 xvi.-xxi. inclusive ; the muscular duct opens directly on to the 

 exterior and is unprovided with a thin-walled sac. 



The segments xvii., xviii., and xix. are masses of vrhite glands 

 which are no doubt connected with the papillse already spoken of. 



The ovaries (which are, as usual, attached to the front wall of 

 segment xiii.) are very large and bunchy. 



The spermathecce are present to the number ot four pairs, and lie 

 in segments vi., vii., viii., and ix. ; they open at the anterior boundary 

 of these segments and are very dorsal in position, the external 

 apertures being about 6 mm. from the nerve-cord. The pouch has 

 the usual shape ; the diverticulum is half again as long as the 

 pouch. 



The characters of the papillae appear to distinguish this species 

 from all other Perichcetce with four pairs of spermathecse. It comes 

 nearest to P. modiglianii. 



The above description refers to a single specimen which I shall 

 keep as the type of the species. Since the description was written 

 I have received a large number of other examples, all living, from 

 Trinidad and Jamaica, and from Lagos on the W. African coast ; 

 the specimens from Trinidad I owe to the kindness of Mr. Hart, 

 Superintendent of the Botanical Gardens ; the other specimens came 

 from Kew. I kept a number of them alive for some weeks in the 

 hope that they might possibly produce cocoons ; unfortunately they 

 died without producing any. One of these specimens (which I 

 have also kept) is illustrated in the accompanying coloured drawing 

 (Plate IX. fig. 2). The examination of a large number of individuals 

 has shown that the characters of the genital papillse as described 

 above are not quite distinctive of the species. In a good many 

 individuals the papillae were precisely as I have described them, 

 but in others there were only a single pair present, that pair lying 

 behind the male pores. These individuals therefore bear a very 

 close resemblance to Perichceta sinensis. If one had only alcoholic 

 specimens to examine and were not allowed to dissect them, it 

 would indeed be impossible to distinguish the species by any at all 

 marked characters. The colour, however (cf. figs. 2 & 3, Plate IX.), 

 is here quite distinctive of the species. 



Perich^ta sinensis, n. sp. 



Of this species of Perichceta I received a number of living speci- 

 mens from Kew Gardens ; they came from Foochow in China. A 

 coloured drawing which I exhibit (Plate IX. fig. 3) was made by Mr. 

 Smit from the living worm. I ought to mention, however, that that 



1 P. Z. S. loc. cit. 



