14 . Transactions. — Zoology. 



When Captain Hutton described P. setosus he had before 

 him, as Faxon points out, specimens from the Eiver Avon, 

 Christchm-ch, and from Invercargill — i.e., of P. setosus (sensu 

 strictiori) and of P. zealandicus. His description, however, has 

 evidently been drawn up from the Eiver Avon specimens only, 

 though the large specimen in the Otago Museum labelled 

 Paranephrops setosus in Button's own handwriting, and there- 

 fore presumably a type specimen, proves to be a specimen of 

 P. zealandicus from a different locality. 



I give below brief abstracts of Faxon's descriptions of the 

 three species, with the more important references only; the full 

 references are given in Faxon's paper. 



1. Paranephrops planifrons, White. 



Paranephrops planifrons, White, Grav's Zoolog. Miscell. 



No. II., p. 79 (1842) ; Chilton, Trans'! N.Z. Inst., vol. xxi., 



pp. 242, 249, pi. X., figs. 1-3 (1888) ; Faxon, Proc. United 



States Nat. Mus., vol. xx., p. 678 (1898). 



Faxon speaks of this as a puzzling species. In specimens 

 from Puriri Creek, a tributary of the Thames, from which 

 White's type specimens were obtained, he says, "The rostrum 

 tapers off mto a long and sharp acumen, which overreaches 

 the distal end of the antennular peduncle. Each side of the 

 rostrum is armed with three teeth, which are produced into 

 long spine-like points. . . . The antennal scale is long, 

 and diminishes in width from the basal third to the tip ; it 

 exceeds the rostrum in length. The post-orbital ridge is 

 interrupted between the two sharp spines with which it is 

 armed. A median ridge runs along the gastric area, reaching 

 forwards as far as the anterior pair of post-orbital spines, but 

 not continued on the rostrum. There are two or three sharp 

 spines on each side of the carapace, just behind the cervical 

 groove, besides several more on the hepatic and ptery- 

 gostomian regions. The areola is very short and broad — 

 not much over one-third as long as the distance from the 

 cervical groove to the tip of the rostrum. The abdominal 

 pleurae are bluntly angulated. The hand is long and narrow, 

 its superior and inferior margins nearly straight, parallel, and 

 armed with a double row of spines — those on the superior 

 margin the longest. The inner and outer faces of the hand 

 are convex, and sparsely armed with spines, the largest of 

 which are disposed in a median longitudinal row on each 

 face." 



Specimens from Karaka, Manukau Harbour, are quite 

 similar, but those from Lake Koto-iti and more southern 

 localities "differ constantly in having a shorter rostral acumen, 

 shorter lateral rostral teeth, shorter and broader antennal 

 scale ; the areola, or, in other words, the posterior section of 



