■114 ^Ir. Iv. J. Oitlepp 0?? a new 



from tlieir size, colour, and general contour of the body, I 

 take to be the same as that described l)y Parona and Stossicli 

 in 1001 as (7^s<>ph(u/ustomum tuhercidatum, sp. n., from Dasy- 

 pHs vil/osus, S. America. Tiie description and figures of 

 these workers are, however, very incomplete, and it seems 

 desirable to attempt a redescription. Tliis is all the more 

 necessar}', because Parona and Stossicli unfortunately referred 

 this parasite to a wronj; genus. 



■J'he ])aiasites were found irregularly distril)uted throughout 

 the small intestine, and were easily seen because of their 

 brilliant red colour. 'Jbey were collected into normal saline, 

 examined alive, and then killed by the hot 70 °/q alcohol 

 method. Afterwards they were transferred to glycerinated 

 70 °/q alcohol. By allowing the alcohol to evaporate, the 

 parasite eventually came to lie in pure glycerine. This 

 procedure rendered the specimens sufficiently transparent for 

 examination ; but, in order to make out the details of the 

 spicules, the males were cleared in Langeron's lacto-phenol. 



Description. 



Male. — The males have an average length of about 6*5 mm. 

 and breadth '33 mm. The body is red and forms a spiral 

 of three or four turns, of which only the last one or two coils 

 straighten out when the animals are killed in hot alcohol. 



The transverse cuticular striatious (fig. 1, a) are well 

 marked on the ventral surface, where they form a broad and 

 conspicuous band commencing about 100 fM from the anterior 

 end and extending almost halfway down the length of the 

 worm ; on the rest of the cuticle these striations are only 

 faintly indicated, and in some places are difficult to see. 

 Longitudinal striations are present, but are very faint. 



The cuticle around the anterior end forms a vesicular 

 swelling (fig. 1, a and h). This surrounds the head and is 

 about 75 /* long by 55 /u, broad. It is terminated behind 

 by a deep constriction which completely encircles the body. 

 Externally it siiows about twenty very faint transverse 

 striations. The rest of the cuticle is remarkable in that it is 

 enormously inflated, this inflation being more pronounced 

 on the dorsal suiface, where it may reach a thickness of over 

 100 fi at about the middle of the body. 



Lateral alee are absent. 



Cervical pajjilhc were not observed, although carefully 

 looked for. 



Tlie anterior end of the worm bears four minute pajjillse — 

 two subdorsal and two subventral. These in cleared speci- 

 mens stand out as clear and refriiigent dots. 



