382 OLIGOCHAETA 



(31) Megascolex cingulatus (Schmaeda). 



Periehaeta cingulata, ScHMAEDA, Neue wirbell. Thiere, Bd. I, ii, p. J 4. 

 Non-Periehaeta cingulata, Vaillant, Ana. Sci. Nat., 1868, p. 225. 

 Non-Megascolex eingulatus, Vaillant, Annel^s, p. 72. 

 M. cingulatus, Beddaed, Ann. and Mag. Nat. Hist., Feb. 1892, p. 122. 

 Definition. Length, 130 mm. ; hreadth, 6 mm.; number of segments, 100. Colour, a greyish 

 red. Clitellum, XIII-XVII ; setae present on all the segments of clitellum ; a complete row 

 on XIII, six setae on each of segments XIF-XFI, ten or twelve setae upon XVII. Dorsal 

 pores commence V/FI. No setae between genital pores on segment XVIII ; two pairs of 

 papillae in intersegmental furrows, XFII/XVIII, XVIII/XIX. Gizzard in VI, VII, the 

 septum between these segments being present ; intestine begins in XV. Septa VII/XII, 

 thickened. Spermiducal glands long and rather narrow, but lobate ; the duct arises from the 

 end of the gland, and is long and coiled. Penial setae present ; they are bent at extremity, 

 and ornamented for a short distance with minute denticulations. Sperm-sacs in X, XI. 

 Spermathecae, one pair in IX; the oval diverticulum — one-third of the length of the pouch — 

 has two subsidiary diverticula, each terminating in two swollen extremities. Hab. — Ceylon. 

 This species was originally and very imperfectly described by Schmaeda, who 

 figured the living worm and the seta (PI. xviii, fig. 162, and woodcut on p. 14); in 

 the text the clitellum is said to commence with the thirteenth segment, but it is 

 figured as beginning at segment xv. The species was redescribed by myself (28, 

 p. 122) from Schmaeda's type. Without a re-examination of the type it would be 

 quite impossible to determine the position and affinities of the species, and there 

 has been, in consequence, a considerable confhsion in the literature relating to it. 

 Vaillant (3) discovered in the Museum at Paris some worms which were 'very 

 evidently ' P. cingulata ; the identification could hardly have rested upon more than 

 the existence of the numerous setae in each segment ; for there is nothing in 

 Schmaeda's description that fits in with the characters of any of the several species 

 which Peeeiee (3) found that Vaillant had united under the name of ' P. cingulata.' 



In my account of the species I have figured the spermatheca (figs. 10, 11), the 

 spermiducal gland (fig. 12), the external characters of the clitellar segments seen on 

 their ventral aspect (fig. 9), and the penial seta (fig. 13). 



(32) Megascolex brachycyclus (Schmaeda). 



Perichaeta brachyeycla, Schmarda, Neue wirbeU. Thiere, Bd. I, ii, p. 14. 

 M. brachycyclus, Vaillant, Annelds, p. 88. 



