1072 MR. R. J. ORTLEPP ON THE 



The caudal expansions are well developed, and the four pairs of 

 stalked papilte are situated in two groups, two pairs being pre- 

 anal and two pairs post-anal. The three pre-anal ventral 

 papillae are of the same size, the middle one being nearer the 

 anus than the other two. 



There are four pairs of post-anal ventral papillsB, of which the 

 1st is small and situated immediately behind the anus ; the 2nd, 

 3rd, and 4th pairs are equidistant, the 2nd being situated at 

 the level of the last pair of stalked papillae, and the last near the 

 tip of the tail. 



Host : Coronella austriaca. Intestine. Australia. 



Types in bottle 4451 in the Vienna Mviseum. 



It is probable that when the male of this species is re-examined, 

 it will be found that there are five pairs of post-anal ventral 

 papillae, and that the extra papilla will be situated near the 

 1st pair just behind the anus. 



(27) PfiYSALOPTERA siMPLiciDENS, sp. n. (Text-fig. 39.) 



The material examined consisted of three females, two of which 

 were immature, one small male, and one larger male which had its 

 bursa broken oil'. 



The cuticle is finely striated, and is slightly i-eflexed over the 

 lips ; the cervical papillae are situated in small concavities just 

 behind the junction of the muscular and glandular parts of the 

 oesophagus. The excretoi-y pore is situated on the ventral 

 surface about 60 /x further back. 



The lips are somewhat flatly conical in side view, and each 

 bears a large triangular tooth, slightly recurved outwards : no 

 other teeth were observed. Each lip carries two papillae, one 

 subdorsal and one subventral, on its outbi surface. 



The oesophagus is short, and in the female forms 1/1 3th and in 

 the male l/8th uf the body-length ; its anterior muscular part 

 forms about l/9th of its length, and is distinctly sepai'a^ed from 

 the following glandular part ; it is encircled by the nerve ring in 

 its posterior quarter. 



Female 



The females are about 44 mm. long and 950 ft broad, and are 

 attenuated towards both extremities ; this is only slightly 

 evident posteriorly where the body is terminated by a short and 

 conical tail, forming l/105th of the body-length. The vulva 

 divides the body into the ratio 1 : 3*3 ; it leads into a muscular 

 vagina 1'3 mm. long by 95^ in diameter; this in turn passes 

 gradually into the egg-chamber, which is 1*7 mm. long by 325/1, 

 broad ; the following common trunk is short, and divides into two 

 branches, each of which after a distance of 200 /x, divides again 

 to give rise to the four uteri. 



The eggs are oval and very thick-shelled, measuring on an 

 average 55 jj. long by 41 jx broad, with a shell 9 /x thick ; they are 

 fully embryonated in utero. 



