ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 707 



regard to their structure, life-history, and classification, and showing 

 how a study of the group may be profitably begun. 



Fresh-water Protozoa of Connecticut.* — H. W. Conn begins the 

 large task of enumerating and defining the Protozoa of this State, with 

 notes on their habits, life-history, and distribution. So far only the 

 recognised genera are described, but specific diagnoses will follow. 

 There are no fewer than 303 figures. 



Craspedotella an Example of Convergence.! — C. A. Kofoid 

 describes Craspedotella pileolm g. et sp. n., a new Cystoflagellate, which 

 has a striking resemblance in form to a craspedote medusa. It was 

 taken in mid-Pacific, midway between the Galapagos Islands and Manga 

 Reva, and also off the coast of Southern California. In structural 

 details it has much in common with Leptodiscus, but there is a velum at 

 the margin of the bell-cavity. The necessities of flotation and locomo- 

 tion have brought about independently in the medusa and the Cysto- 

 flagellate an external similarity in form, though the inner structural 

 elements are exceedingly diverse in the two — a striking instance of 

 convergence. 



Human and Animal Trypanosomiasis.^ — D. Xabarro and E. D. W. 

 Greig give an account of their experiments and observations in Uganda 

 under the Sleeping Sickness Commission. They describe Trypanosomes 

 from cattle, dog, and mule. The experiments conducted in East Africa 

 show that one or more of the varieties of Glossinw found there are 

 capable of conveying the trypanosoma of Sleeping Sickness. Experi- 

 ments with Stomoxys failed to convey any of the three animal trypano- 

 somes (T. iv, v, vi) from infected to healthy animals. The disease, 

 known locally as " Mukebi " amongst the transport oxen in Entebbe, 

 associated with the presence in the peripheral blood, in the earlier stages 

 of the disease of the trypanosome (called T. in) appears to be distinct 

 from Nagana and Surra. From the behaviour of other three animal 

 trypanosomes (termed T. iv, v, vi) in the stomach of Glossinoz and 

 Stomoxys, it would seem permissible to say that these are three distinct 

 species. From two experiments positive results were obtained indicating 

 that the tsetse flies met with in East Africa are capable of conveying 

 the trypanosoma of sleeping sickness. This is a point of considerable 

 importance, as the belt extends down as far as South Africa, and the 

 fly also runs up the great waterways from the coast. 



New Species of Lankesterella.§ — H. B. Fantham describes L. 

 tritonis sp. n., a new Hamiogregarine from the blood of the newt. He 

 found vermiform trophozoites, some perhaps with micro- and macro- 

 gametocytes. The fully-developed trophozoite (Schizont) bends on 

 itself, becomes U-shaped, forms a ring, and gives rise to merozoites. No 

 sporogony was observed. The new form is apparently very like L. 

 ranarum (L. minima of Hintze), but it is smaller. Indeed, it is ap- 

 parently the smallest Hamiogregarine yet noted. 



* Bull. No. 2, Connecticut State Geol. and Nat. Hist. Survey, 1905, 69 pp., 34 pis. 

 t Bull. Mus. Comp. Zool. Harvard, xlvi. (1905) pp. 163-6 (2 figs.). 

 \ Royal Soc. Reports, No. 5, Sleeping Sickness Commission, Julv 1905, pp. 8-18 

 (3 pis.). § Zool. Anzeig., xxix. (1905) pp. 257-63 (17 fig's.). 



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