OCR Text |
Show 314 MR. F. F. LAIDLAW ON THE [Apr. 21, As in that species, the testes as well as the ovaries lie on the dorsal side of the body. T hy san o zo on au ro pun c ta tum Coll. Thysanozoon cmropunctatum Lang [6]; von Stummer-Traunfels [13O]n- e specimen, unfortunately immature and in a poor state of preservation, although it has retained its colour fairly well. P seudoceros b e d fo r d i , sp. n. (P la te XXIII. fig. 9 .) This strikingly handsome and large species was obtained by Messrs. Lanchester and Bedford in Singapore Harbour. The single specimen, kindly given me by Mr. Lanchester, was unfortunately in fragments and fully one-half of the specimen missing, so that a satisfactory examination was not possible. I believe, however, that it was provided with a pair of penes. The colouring is very beautiful, and quite sufficiently marked to render the identification of this species in the future a simple matter, thanks to the careful drawing for which I am indebted to Miss Dust. On the label accompanying the specimen is written " Singapore Harbour, from tide-marks to 10 faths." I venture to associate with this species the name of my lamented friend the late Mr. Bedford. P seudoceros col l in gw oo d i , sp. n. Closely allied to Ps. cerebralis (Kelaart) and Ps. striatus (Kelaart), but smaller than either. It has the same regular convolutions at the margin of the body that are shown in Collingwood's figures, and the coloration is similar especially to Ps. cerebralis. Length, about.............30 mm. Breadth ,, .............25 ,, Mouth-opening, about 3 ,, from the anterior margin. Sucker about ........... 8 ,, behind the mouth. The specimen is immature and the penis is unpaired. Colour-- dorsal surface mottled dark brown and brownish white. The extreme margin is white, but the white rim is exceedingly thin; just inside this is an equally fine black line. Ventral surface pale brownish white, becoming darker towards the margin, which is edged with black and white just as on the dorsal surface. P s e u d o c e r o s ? r u b e l l u s , sp. n. (Plate XXIII. fig. 10.) A number of specimens of this very small species were collected. One of these was " found under a stone between tide-marks. It was magenta-red in colour. Nov. 1899." Though very small, these specimens appear for the most part to be mature. They bear a close resemblance to Pseudoceros kelaartii (Coll.) in colour, but the latter species is much larger and has the eye-spots arranged quite differently. The arrangement in the present species is shown |