| OCR Text |
Show 1895.] ME. F. E. BEDDAED ON N E W EAETHWOBMS. 237 xxth, which marks the limit of divergence, have got to be wider apart than they are on the anterior segments of the body. They continue to the end of the body without any further change. I could see no dorsal pores. The clitellum, as has been already mentioned, was not developed in the type. In an example from Putabla it occupies segments xiv.-xvii. The gizzard lies in segment vii. The specially thickened septa are few in number. As a general rule in this and, indeed, in other genera, the thick septa begin with the second septum; in the present species this is not the case; the thickened septa are only two, those separating segments x./xii. The capacity of the xth segment is very limited. The septum which divides it from the segment lying in front is closely applied to septa x./xi. In the narrow room thus formed lie the testes and the funnels of the sperm-ducts. The racemose sperm-sacs lie in segment xi. The single pair of spermathecae are small, perhaps on account of the immaturity of the worm. The form is not particularly remarkable ; the sac has a diverticulum not quite so long as itself but narrower. The spermiducal glands are not particularly large. They are confined to their segment. In the single bundle of penial setae which I examined, I found three penial setae of about the same length and general appearance except as regards colour; one of the three setae was a very pale colour, while the other two were bright yellow. I presume that the first-mentioned seta was immature. All of them end in a bluntish point and are quite unornamented. Hab. Teja Isl., Valdivia (St. 39). St. 30, Valdivia, Putabla. From Estancilla (St. 41) was collected a larger individual, which seems to be, though it is difficult to be quite certain, a sexually mature specimen of the same species. This worm is 72 m m. long by 7 m m . in diameter, and consists of 82 segments. The clitellum occupies segments xiv.-xvii. There are a number of genital papillae ; a pair on each of segments ix., xv., xvi., and an asymmetrical one on xiv.; on each of segments xvii. and xviii. there are three papillae. The spermiducal glands of the mature worm have a warty appearance ; the penial setae are very faintly ornamented with transverse ridges. (8) Microscolex diversicolor, n. sp. A good many examples of this species were collected in Valdivia, in Chile. It is a worm which has an exceedingly marked coloration, and is therefore always conspicuous in any collection. The colour of the dorsal surface is a bright purplish red, extending on to the sides of the body beyond setae. The dorsal setae are implanted in areas which are equally conspicuous on account of the fact that they have no pigment and appear white. In some |
