312 Dr. L. Orlej on Nematodes. 



Filan'a spiralis^ n. sp. (PL X. fig. 2, a, h.) 



Female : length 1*1 millim., breadth 0*46 milHm. ; length of 

 the body to that of the o?soph.= 7 : 1 ; length of the body to 

 that of the tail = 40 : 1. 



Body of nearly the same breadth throughout ; head com- 

 pressed anteriorly, termination of tail acute. Mouth surrounded 

 by six small lips, containing a quantity of pulp 5 the two 

 lateral of these lips are somewhat larger than the four median, 

 which, however, are provided with a tooth-like process. The 

 lips are stout, and are so closely a])pressed that it is very 

 difficult to separate them. The mouth leads into a small vesti- 

 bule. The cuticle is elevated into six dermal lobes, corre- 

 sponding to the lips ; these are connected together and form 

 a kind of tube over the head ; they are especially characteristic 

 of our worm ; their edges are smooth, not toothed. Height of the 

 tube O'l millim. The a^sophagus appears to consist of a short, 

 strongly fibrillated portion, and an opaque richly granular 

 part, •which is nearly twelve times as long. The intestine 

 is formed of a number of rows of polyhedral cells, and is coiled 

 in its more posterior portion. The female generative organs 

 Avere incompletely developed in the specimens under examina- 

 tion ; but the vulva was observed at the sides of the anterior 

 end of the head. Of the ten specimens, not one was a male. 



The cuticle is thrown into well-marked rings, except at the 

 head and tail, which are smooth. 



This worm was found encapsuled between the serous and 

 muscular layers of the stomach of an Australian frog, Htilo- 

 porus albojjunctatus? It was coiled up very much like 

 Trichina spiralis , and hence its specific name. It differs in 

 very many points from any Filaria which has yet been found 

 encapsuled in the Amphibia ; and I cannot identify it with 

 any described Filaria or Spiroptera. 



Filaria ecaudata^ mihi { = F. ohlusa, Rud.). 

 (PI. X. fig. l,a-d.) 



Male, length 35 millim. ; female 80 millim. Breadth 

 3 millim. ; length of the body to that of the oesoph. = 20 : 1 ; 

 length of the body to that of the tail= 1000 : 1. 



Body of the same breadth throughout and rounded ; the 

 head and tail terminate acutely. Head rounded off, pretty 

 broad. Mouth small, round, with six papillae ; it leads directly 

 into the oesophagus, which is so constricted anteriorly by the 

 connexion between the lateral lines, that it is divided into 

 an anterior and a posterior portion. The latter passes directly, 

 and without the intervention of a bulb, into the intestine. In 



