278 SUMMARY OF CUREENT RESEARCHES RELATING TO 



Regeneration in Earthworm. — H. R. Hunt {Bull. Mus. Comp. 

 Zool. Harvafd, 19] 9, 62, 571-81, 1 pi). Following the excision of 

 the anterior part of the nerve cord and digestive tube from a beheaded 

 earthworm, these parts may regenerate, restoring the normal structure. 

 The regeneration of the alimentary canal and nerve cord is independent 

 of mechanical stimuli or support provided by either the cicatrix or the 

 regenerating body wall at the anterior end of the worm. What may 

 have been an abortive attempt to regenerate a head on the dorsal side 

 of the body was observed in worms from which the anterior regions of 

 both nerve cord and digestive tube had been removed. The develop- 

 ment of a stomodaium is not contingent upon the presence of lirain and 

 connectives. The following structures can regenerate independently of 

 any mechanical stimulation or support furnished by the digestive tube 

 — stomodffium, connectives and brain, and a region of segmented body 

 wall containing longitudinal and circular muscles. J. A. T. 



Genera of Enchytrseidse. — ^Paul S. Welch (Trans. Amer. Micro. 

 Soc, 1920, 39, 25-50). A revision of the sixteen genera (with 

 approximately three hundred and twenty-five species) of this family. A 

 diagnosis is given of each, followed by a discussion. Particular atten- 

 tion is paid to the penial bulb, which seems to be of much value in 

 classification. A useful key for identihcation is given. J. A. T. 



Limnatis nilotica in Seistan and Afg-han-Baluch Desert. — N. 

 AxNANDALE and Amix-ud-Din {Records Indian Museum, 1920, 18, 

 135-6). A record of this leech on the borders and even within the 

 boundaries of the Indian Empire. Many were observed at Robat close 

 to the point at which the Afghan, Baluch and Persian frontiers meet, 

 and a specimen was got within the district of Seistan, "on the tongue of 

 a horse. It agreed in all essentials with specimens from Palestine. 

 Dr. Annandale and Dr. Kemp saw a member of an Indian labour corps 

 carefully skimming water from the top of a spring at Makki in Western 

 Baluchistan. When asked why he did so, the man replied that he was 

 afraid of leeches. This recalls the story of Gideon, separating men 

 who lifted water in their hands from those who drank Hke dogs. 



J. A. T. 

 Bryozoa. 



New Japanese Bryozoa.— Yaichiro Okada {Annot. Zool. Japan., 

 1921, 10, 19-32, 7 figs.). Illustrated descriptions of the following new 

 species : — Flustra stolonifera, with curious antler-like spines ; Euthryoides 

 simplex, with a thin bilaminar zoarium ; Carbasea sagamiensis, with uni- 

 laminar zoarium, hexagonal zooecia, and with rib like processes on the 

 lower margin of the ooecia ; Brettia ijimai, the ooecia of which are the 

 first to be described for the genus. J. A. T. 



Neniatohelminthes. 



Sclerostomes of Donkey. — Charles D. Boulenger {Parasitology, 

 1920, 12, 27-32, 5 figs.). Nine species of Nematodes were obtained 

 from donkeys in Zanzibar and East Africa, including (1) Sirongglus 

 asini sp. n., in some respects intermediate between S. equinus and 



