ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 411 



coccoid bodies may be present in the Malpighian secretion and excre- 

 ment of an infected tick, and when mixed with the coxal fluid may gain 

 entry into another fowl by the open wound caused by the tick's bite. 

 They then elongate and re-develop into ordinary spirochaates in the blood 

 of the fowl. 



Brown Flagellates with Lateral Flagella.* — A. Pascher discusses 

 the rather rare brown Flagellates which have the flagella inserted later- 

 ally. He gives diagnoses of three forms — Sennia commutata { = Ne- 

 phroselmis olivacea Senn), Protochrysis phseophycearum Pascher, and 

 Nepliroselmis olivacea Stein. Of these three, Nephroselmis and Proto- 

 chrysis are typical Cryptomonads, the former distinctly higher than the 

 latter. The affinities of Sennia remain uncertain, though it has features 

 pointing to Cryptomonads. 



Asexual Gregarine.t— P. de Beauchamp describes Rhytidocystis 

 henneguyi sp. n. from Ophelia neglecta, a Gregarine closely allied to Rhy- 

 tidocystis ophelise described by Henneguy from the coelom of Ophelia 

 hicornis. In both species the encystation is solitary, which excludes the 

 possibility of fertilization preceding the formation of the sporoblast. 

 There was no evidence of the sporoblasts uniting autogamously in pairs. 

 The spore has a differentiated envelope and two sporozoites ; it is quite 

 like an ordinary " gamogonic " spore. 



Peculiar Parasite on Canthocamptus staphylinus.| — E. Reukauf 

 describes on this small crustacean an abundant ecto-parasite of doubtful 

 position, which he names Canthocamptophilus ludwigii g. etsp. n. Thin- 

 walled spores found on the eggs of the host give rise to sickle-shaped 

 forms which fix themselves on all parts of the body. The sickles may 

 form " conidia," zygospores, and hyphfe. The parasites seem like links 

 between Sporozoa and Hyphomycetes. 



* Zeitschr. wiss. Zool. c. (1912) pp. 177-89 (3 figs.). 



t Comptes Eendus, cliv. (1912) pp. 1384-5. 



X Centralbl. Bakt. ParasHenk., Ixiii. (1912) pp. 210-12 (9 figs.). 



2 F 



o 



