Colenso. — On some newly-discovered New Zealand Arachnids. 165 



Fig. 5. View of roof of cardiac portion of the stomach from below, the stomach being 

 laid open by a longitudinal incision along the ventral wall ; c, cardiac ossicle ; 

 pc, pterocardiac ossicles ; uc, urocardiac process ; mt, median tooth ; It, 

 lateral teeth. 



6. Longitudinal section of stomach ; ces, oesophagus ; c, cardiac ossicle ; pc, ptero- 



cardiac ossicle ; uc, urocardiac process ; pp, prepyloric ossicle ; p, pyloric 

 ossicle ; mt, median tooth ; It, lateral tooth ; cpv, cardio-pyloric valve ; cm, 

 cfficum ; hg, hindgut. 



7. The male reproductive organs (X 2); t, testis; vd, vas deferens; a, expanded 



extremity of the vas deferens. 



8. The female reproductive organs (X 2) ; ov, ovary; od, oviduct. 



Plate XXI. 

 Fig. 1. Portion of exopodite of antennule much enlarged, showing — a, plumose setse ; 6, 

 naked seta? ; and c, olfactory setae. 



2. One of the olfactory setaa (x about 200). 



3. Portion of a transverse section of the integument of chela (x about 45) ; a, epios- 



tracum ; b, ectostracum ; c, endostracum. 



4. One of the coxopoditic seta? (X about 200); a, middle joint; b, hooked extre- 



mity ; c, another showing peculiar form of the hook. 



5. Extremity of a branchial filament from a podobranchia showing the hooked 



extremity. 



6. Seta from the stomach (x about 45) ; a, a portion of the same more highly mag- 



nified. 



7. Naked seta from forceps (x about 45). 



8. Plumose seta from forceps (x about 45). 



9. Third abdominal segment, side view. 



Art. XII. — On some newly -discovered New Zealand Arachnids. 

 By W. Colenso, F.L.S. 

 [Read before the Hatvke's Bay Philosophical Institute, Uth September, 1882.] 

 In bringing before you this evening the few curious and fine Arachnids, 

 forming the subject of my present paper (of which I also exhibit specimens), 

 I would first, by way of introduction, call your attention to their systematic 

 position in the great Animal Kingdom. I am the more especially inclined 

 to do this for two reasons : — 1. Because of the youthful part of my audience ; 

 and, 2. Because these animals (with many of their congeners and allies) 

 are popularly, though erroneously, included under the one general term of 

 Insects. These animals, however, do not belong to the class Insecta, but to 

 the allied one of Arachnida, which is also a large and varied one, and in- 

 cludes all Spiders, Scorpions, Mites, etc., etc. 



My subject and specimen No. 1, will, I think, be found to belong to the 

 family of Phalangidce, or to the next one of Pseudoscorpionida?., — or, what is 

 not unlikely a link connecting both. As far as I know, hitherto only one 



