Benham. — Ttvo Neiv Species of Leech in N.Z. 183 



far down on the aiiterior lip of the sucker, in front of the eyes, 

 and probably in the 2nd annuhis. It leads into the usual pha- 

 ryngeal sac, which extends backwards into about somite ix. In 

 it lies the long, muscular, club-shaped pharynx, which was 

 somewhat displaced laterally, and undulating. It commences 

 as a very narrow tube just behind the brain, but increases con- 

 siderably in diameter as it passes backwards, so that in somite x 

 it is four or five times its previous diameter. Opening into 

 the posterior end is a pair of groups of salivary gla]ids, each 

 group consisting of a bunch of numerous large gland-cells, each 

 of which is prolonged into a long narrow neck, as described by 

 Castle for several species. The bunch of cells is, however, more 

 compact than in the species described by him, each bunch 

 being confined to a single segment — to the eleventh. The short 

 oesophagus leads into the crop, which is produced laterally 

 into seven pairs of caeca in somites xiii to xix, the first and 

 last of which are larger than the rest. The first, arising in 

 somite xiii, passes forwards into somite xi ; it is sacculated, 

 overlies the ductus ejaculatorius, and is indented by its coils. 

 The last similarly passes through about four segments, and is 

 also sacculated. Each of the others is confined to its own 

 segment. 



A feature that I do not see noted in the description of other 

 members of the family is a median gland surrounding the crop 

 in somite xi ; it consists of cells similar to the pharyngeal-gland 

 cells, closely wrapped round the tube. 



The stomach, occupying somites xxi to xxiv, is produced 

 into four pairs of simple pouches, each enveloped as usual by 

 a great dilatation of the dorsal blood-vessel. These gastric 

 pouches are not strictly metameric : they are much crowded 

 in the specimen, and lie partly over one another. They appear 

 to belong to somites xxi, xxii, xxiii, xxiv. 



The intestine follows, and passes to the dorsally situated 

 anus. 



The nepkridia were not traced out fully, nor was the total 

 number enumerated ; the funnels have a form typical for 

 Glossosiphonids. 



The Generative Organs (fig. 5). — There are six pairs of testes 

 (really testicular sacs), lying immediately behind the six anterior 

 enteric caeca, and partially below them (probably due to curva- 

 ture and the contracted condition of the individual) ; they lie 

 in the annuli 31, 34 &c., to 46 — i.e., in the posterior annulus of 

 somites xiii to xviii. They are compressed by the neighbouring 

 organs, but are more globular towards the margins of the body. 

 They contain only a few sperm-morulte, as the spermatozoa 

 had already been discharged into the seminal vesicles. 



