686 EXPEEIMENT STATION EECOKD. 



work (pp. 1-168) is devoted to the vegetable parasites, and tlie second part 

 (pp. 169-665) to tlae animal parasites, known to affect man. 



An account of some Helniinthes contained in Dr. C. M. Wenyon's collec- 

 tion from the Sudan, R. T. Leiper (Rpt. Wellcome Research Labs. Gordon 

 Mem. Col. Khartoum, 3 (1908), pp. 187-199, pi. 1, figs. 11).— A genus (Bal- 

 fouria) and several new species are described in this account. 



An echinostoma from the intestine of the dog, A. Railliet and A. Henry 

 iCompt. Rend. Soc. Biol. [Paris], 66 (1909), No. 11, pp. //// 7-^/9). —The species 

 Echinostoma grcgale is hei-e described as new. Two other species of the genus 

 have been reported from domestic carnivora and the author considers it very 

 probable that the species here described is a common parasite of the dog and 

 perhaps of the cat. 



A disease of rats caused by mites, W. Schurmann [Centhl. Bakt. [etc.], 

 1. AM., Orig., ^S (1908), No. 2, pp. 167-172, figs. 7).— The author describes a 

 disease of rats which appears to be due to a species of Sarcoptes. The ears, 

 nose, feet, and tail, particularly, are affected. 



The hemogregarines of snakes, L. W. Sambon and C. G. Seligmann (Jour. 

 Trop. Med. and llijg. [London], 11 {1908), Nos. 23, pp. 355-358; 2J,, pp. 374-377; 

 12 {1909), Nos. 2, pp. 22-2 J,; 3, pp. 38-', 1; 1,, jyp. 1,8-55; 5, pp. 70-75, figs. J,Jt).— 

 The authors have brought together the scattered information concerning hemo- 

 gregarines in general. The ophidian hemogregariues are considered at length, 

 several species being described as new. A bibliography of 44 titles relating to 

 this subject is appended. 



Concerning Trypanosoma pecaudi, T. dimorphon, and T. congolense, A. 

 Laveran {Compt. Rend. Acad. Sci. [Paris], I'/S {1909), Nu. 13, pp. 818-821).— 

 Sheep immune to any one of these trypanosomes appear to be susceptible to the 

 other two. Observations here reported confirm the view that the 3 trypan- 

 osomes are distinct species. 



On the discovery of trypanosomata in an ox in Germany, G. Frank {Zfschr. 

 Infektionsla-ank. u. Ilyg. Haustiere, 5 {1909), No. 3-J,, pp. 313-315; Berlin. 

 Tierdrtztl. Wehnschr., 25 {1909), No. 11, pp. 21/,, 215, abs. in Jour. Compar. Path, 

 and Ther., 22 {1909), No. 2, p. 18'/). — The tryi)anosome concerned is said to be 

 a new and different form from any hitherto known. 



The transmission of trypanosomes, B. ]\1()LLei{s {Ztschr. Hyg. u. Infektions- 

 Icranlc, 62 {1909), No. 3, pp. J,25-.',32; abs. in Sleeping Sickness Bur. [London] 

 Bui. 6, pp. 211-213). — The author considers that 5 of 107 female mice became 

 infected with Trypanosoma bruecl through copulation and that he has proved 

 the possibility of infection in this way. 



In experiments with the young of infected bugs there was no case of con- 

 veyance of the trypanosomes. Transmission experiments with descendants of 

 specimens of Ornithodoros ■moubata brought from East Africa by Koch all re- 

 sulted negatively. Three days after the ticks had fed on infected animals no 

 infection could be produced by the injection of the body contents into mice. 



Hematoxic substances secreted by the larvae of CEstrus, M. Weinberg 

 {Compt Rend. Soc. Biol. [Paris], 65 {1908), No. 25, pp. 75-77).— '' The larv:e 

 of CEstrus, which fix themselves to a point in the intestinal tract, live on the 

 blood of the host. They suck blood intermittently. The parasites secrete sub- 

 stances which have the property of hindering the coagulation of the blood, of 

 redissolving a clot already formed and of dissolving I'ed corpuscles. The sub- 

 stances are not specific and appear to be reduced, but not destroyed, by heat. 

 They are elaborated by the digestive organs of the larva. They are also found 

 in the adipose tissue and particularly in the red cells of those organs." 



