ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 51 



Notes on Japanese Triclads. — Tokio Kabijra.ki" {Annot. Zool. 

 ■Japon., r.)l8, 9, i-i/)-;), U figs.). The spermatophore in PUmaria vivida 

 is formed in the vesicula seminalis and the adjoining parts of the vas 

 deferens impar ; the fiapsule consists of an eosinophil substance. In 

 various species of Flanaria there are alternate periods of asexual 

 multiplication by fission and sexual reproduction. A curious case of 

 budding was observed in Sorocelis sapporo ; the mother individual, with 

 well-developed genital organs, bore on its left side in the pharyngeal 

 region two branch-like Ijuds — one an additional posterior body-part, 

 and the other an additional anterior part. The latter was practically 

 an entire young individual connected to the mother by the tail-end. 



J. A. T. 



New Japanese Polyclads. — Megumi Yeri and Tokio Kaburaki 

 {Annot. Zool. Japon., i;t20, 9, 591-.S, 5 figs.). A description of 

 Neostyloclms fulvojmnctatus g. et. sp. n., from between tide-marks at 

 Misaki. It has an oval body, no tentacles, marginal eyes confined to 

 the frontal region, a true seminal vesicle, a prostate gland dorsal to the 

 seminal vesicle, a slender tubular penis, and a single large accessory 

 vesicle on the vagina. It is intermediate between Stylochus and 

 IdiopJana. A key to Stylochid genera is given. Another new form, 

 from the coast of Hatakejlma, is Frosthiosiomum triUnmtum sp. n., very 

 distinctive in its coloration. J. A. T. 



Eyes and Orientation of Planarians. — W. H. Taliaferro {Journ. 

 Exper. Zool., l'.)2o, 31, 59-llG, is tigs.)- Tlie eye of Planaria maculata 

 is a typical Turbellarian eye, consisting of accessory cells forming the 

 pigment cup and the sensory cells or retinuhw Each retinula consists 

 of three regions — the nucleus-bearing region, the middle region and the 

 rhabdome — which show a striking resemblance to the three regions of 

 the vertebrate retinula — namely, the myoid, the ellipsoid, and the 

 rhabdome. The orientation of Planaria maculata is negative to light, 

 and accurate in relation to a horizontal beam of light. Orientation 

 is, under certain conditions, direct ; blit trial movements are at times 

 functional in the process of orientation. An account is given of 

 numerous experiments bearing on this orientation to light. J. A. T. 



New Trematode from Frog-'s Bladder. — John E. Guberlet 

 {Proc. Amer. Soc. Zool. in Anat. Becord, 1920, 17, 331). A brief 

 description of Gorgodera circava sp. n., from the cloacal bladder of Rana 

 catesbiana. The parasite occurs firmly fastened to the wall of the 

 bladder by the ventral sucker, which is surrounded by a distinct 

 circular sheath. The gonads are described. J. A. T. 



Life-history of Gape-worm. — B. H. Ransom {Proc. Amer. Soc. Zool. 

 in Anat. Record, 1920," 17, 330-1). Out of 679 turkeys, 22-5 p.c. were 

 infected with Syngamus trachealis ; out of 63") chickens from the same 

 market none harboured the parasite. Full-grown chickens are very 

 resistant. Infection may persist in the soil for a long time ; eggs and 

 larvtB were kept alive in most media for over eight months at a 

 temperature of about 50° F. When eggs containing larv^ were fed to 



E 2 



