122 Mr. F. E. Beddard on the 
the worm it is identical. “Pertchewta leucocycla” is there- 
fore the same species as Megascolex cwruleus, in spite of the 
differences of colour shown in Schmarda’s figure and in 
Bourne’s *. 
The synonymy of the species will therefore stand thus :— 
Megascolex ceruleus, Templeton, Ann. & Mag. Nat. Hist. 1845, p. 60. 
Pericheta leucocycla, Schmarda, Neue wirbell. Thiere, Bd. i. Hilfte ii, 
p. 15. 
Pleurocheta Moseleyt, Beddard, Trans. Roy. Soc. Edinb. vol. xxx. p. 481. 
Megascolex Moseley?, Vaillant, Annelés, Suites & Buffon, t. iii. p. 67. 
“‘ Pericheta cingulata,’ Schm. 
The collection contains two specimens, one of which is 
the type of Schmarda’s species. ‘This is sexually mature, so 
that I can describe its external characters more accurately 
than has been hitherto done. Vaillant | apparently con- 
founded several species together under the name of Pericheta 
cingulata, as Perrier pointed out; but none of these species 
are really identical with Schmarda’s. It is, in fact, not a true 
Pericheta at all. 
I shall refer to it here as 
(4) Megascolex cingulatus, Schm. 
(Pl. VII. figs. 9-13.) 
siete cingulata, Schmarda, Neue wirbell. Thiere, Bd. i, Hatlfte ii. 
p. 14, 
Nes Pericheta cingulata, Vaillant, Ann, Sci. Nat. 1868, p. 225. 
Non Megascolex cingulatus, Vaillant, Annelés, p. 72. 
I refer this worm to the genus Megascolex principally on 
account of the fact that the sete: are not arrauged in a perfectly 
continuous circle round each segment, but are interrupted by 
dorsal and ventral gaps, as, for instance, in J/egascolex 
coeruleus. 
The clitellum consists of five seginents, viz. Xill.—XxVil. ; 
sete are present upon all these segments, but vary in their 
numbers on different segments. The first segment of the 
clitellum, the thirteenth, has a complete circle of setes marked 
of course by the same dorsal and ventral gaps as are the rows 
of setee upon the pre- and post-clitellar segments. The four- 
teenth, fifteenth, and sixteenth segments have each three sete 
* “On Megascolex ceruleus, Templeton, from Ceylon,” &c., Quart. 
Journ. Mier. Sci. vol. xxxii. pl. vi. 
+ “Note sur PAnatomie de deux espéces du genre Pericheta,” &e. 
Ann. Sci. Nat. t. x. (1868) p. 225. 
