16 



Only females found, 12-15 mm. long and abont 1 mm. broad. 

 Characterized by the presence of a conical ovipositor 2-3 mm. 

 long, placed ventrally on the anterior third of the body, 2~ 

 3'5 mm. from the cephalic extremity, and by a spirally twisted 

 tail, 2-3 mm. long, terminating in a fine point. Body semitrans- 

 parent. Head tapering anterioi-ly. Mouth trilabiate ; oesophagus 

 long and terminating in a spherical bulb. Anus open ventrally 

 at 3-4 mm. from tail-end. Eggs smooth, oblong, asymmetrical, 

 and measuring 60-65 fi by 28-32 ju. 



Sparganum baxteri, sp. n. ? 



Habitat. Connective tissue of Man. 



Long, flat, unsegmented body, 15 cm. long and 1'5 mm. broad, 

 with numerous irregular transverse folds and a distinct longitu- 

 dinal groove on ventral surface. Anterior extremity 2*5 mm. 

 broad ; head completely invaginated. Posterior extremity 2 mm. 

 broad, with shallow median slit. Extracted from an abscess on 

 the thigh of a Masai, British Central Africa. 



SCHISTOSOMUM MANSONI, Sp. n. 



Habitat. Blood-vessels of Man. 



In the Congo Free State, in other parts of Africa, and in the 

 West Indies there is a form of Bilharziasis clinically and patho- 

 logically similar to the Asiatic form caused by Schistosomwm 

 japo7iicuni, and unlike the classic East African form due to 

 aS'. hcematobium. The eggs of the species which causes this pecidiar 

 form are never found in the urine, but seem to be eliminated 

 through the intestine only. They differ from those of S. hcema- 

 tobium in having a broad lateral spine totally different in size, 

 shape, and position from the small, straight, terminal spine which 

 characterises the ova of S. hoimatobizim. Hitherto, the laterally 

 spined ova, usually observed in Egypt in cases of mixed infection, 

 have been looked upon as having been d'storted whilst passing 

 through the rectal mucosa. Sir Patrick Manson suggested several 

 years ago, that the laterally spined ova found in the faeces of 

 patients, and never in the urine, might represent a new species. 

 In appreciation of this, one of his many genial intuitions, the new 

 species is dedicated to him. 



Dr. L. W. Sambon also described five new Hasmogregarines 

 discovered by himself and Dr. 0. G. Seligmann in Snakes, as 

 follows : — 



H^M0GREGARI^^A POCOCKI, Sp. n. 



Habitat. Erythrocytes of Indian Python, Python molu7'us L. 



Club-shaped, 1 4-1 6 /n long. Anterior extremity rounded, 3-1 5 yu 

 broad. Posterior extremity attenuated and recurved. Cytoplasm 

 more or less granular. Nucleus median oi- nearer posterior ex- 

 tremity, large, oval, and with coarse deeply staining chromatin 



