^ — 150 — 



from amphibia. In tlie collection of Prof. Dogiel there was a 

 new, tenth reptesentative of this genus from the lungs of a 

 chamaeleo, named by me Angiostomum chamaeleonis n. sp. 



Until the present no species of Angiostomum had been 

 discovered in Africa. 



26. Angiostomum chamaeleonis nova sp. 



Host: lizard No 21 from the fam. Chamaeleontidae, 

 Occurence: lungs. 



Description of species: length of body in the hermaphro- 

 dite generation reaches 24 mm. at a maximum width = 1,0 mm. 



Body cylindrical, twisted into a ring, narrowing towards 

 both extremities; colour of body — whitish with the sharply 

 marked brownish-black intestine. On both sides of the body 

 are situated alate dilatations of the cuticle, widest (about 

 0,068 mm.) in the region of the cephalic end, gradually nar- 

 rowing in the middle portion of the body and again wide- 

 ning near the tail. The mouth-opening is circular, without 

 any traces of lips, or any analogous appendages, and leads 

 into a small oral capsule reaching 0,02 lum. in length at a 

 width of 0,034 mm., after which follows the muscular oeso- 

 phagus, 1,225 mm. long. The latter Js of cylindrical form, gra- 

 dually passing into a swelling which is not divided from the 

 rest of the oesophagus by any constriction. The width of the 

 cylindrical part of the oesophagus is 0,1 mm., of the base of 

 the swelling— 0,187 mm. The anal aperture is situated at a 

 distance of 0,34 mm. from the caudal extremity. The latter 

 is bent at an obtuse angle to the long axis of the body, and 

 has the form of a conical outgrowth rounded at the apex, 

 and surrounded by the alate cuticular dilatation. The axis of 

 the caudal process is nearly perpendicular to the body-axis 

 (see fig. 76). In its posterior portion the intestine narrows, 

 and bears the aspect of a narrow slit-like aperture, on the 

 sides of which are arranged the anal glands. The genital 

 aperture is placed somewhat posteriorly to the middle of the 

 body-length, as in most species of Angiostomum. The oval 

 eggs which fill the body of the hermaphrodite are 0,136 mm. 

 long, and 0,076 mm. wide, and contain developed embryos. 

 The width of the body varies in the different parts: thus, in 

 the region of the end of the oesophagus it reaches 0,425 mm., 



