Jennings. — Pedunculate Cirripedia of New Zealand. 29 



q 



average worn specimens, at the most distinguished from the last by the 

 prominence of the terga, have been called P. darwini. 



I could readily find specimens, I believe, from the same bunch, certainly 

 from the same locality, to match each of these species. However, since these 

 species are at present accepted, I have included all three in my list. 



In addition, I have examined the mouth parts from a number of repre- 

 sentative specimens. So far I have found the mandibles and maxillae 

 rather variable, and not uniformly so. 



As for the colour on the membrane covering the peduncle and valves, 

 those that have been some years in spirits are yellow ; fresh specimens 

 are blackish ; dried ones grade from black to dark brown to yellow. All 

 varieties when first put into methylated spirits turn quickly red. The 

 colour differences given by Darwin and Gravel would scarcely, then, seem 

 to afford any valid distinction of species. 



To conclude, I am practically certain that the New Zealand Pollicipes 

 so far recorded come under one species only, which, by priority, should be 

 called Pollicipes spinosus Quoy and Gaimard. 



Art. XXXI. — The Occurrence in New Zealand oj Myriapoda oj the Genus 



Seutigerella, Order Symphyla. 



By Gilbert Archey. M.A., Assistant Curator, Canterbury Museum. 



[Read before the Philosophical Institute of Canterbury, 2nd December, 1914.] 



The group Symphyla is of considerable interest and importance, for, as its 

 name, given so appropriately by Ryder.* implies, it forms a connecting- 

 link between two classes of animals — the Insecta and the remainder of the 

 Myriapoda. The characters which indicate insectan affinities are the num- 

 ber and arrangement of the mouth-parts, and the presence, at the base of 

 the legs, of small processes called exopods. The insects which show these 

 characters are the simplest and most primitive groups — Thysanura and 

 Collembola — a significant fact for similarity of structure in primitive, 

 unspecialized forms of two groups is more likely to indicate affinity than 

 resemblances in highly specialized and otherwise extremely differentiated 

 forms. 



The Symphyla contain two genera. ScolopendreUa and Seutigerella, the 

 species of which have been found in most parts of the world, but not hitherto 

 from either Australia or Xew Zealand. Dr. H. J. Hansen, of Copenhagen, 

 who has written a monograph on the Symphyla,^ stated in a letter, dated 

 2nd November, 1903, to Dr. Chilton that he had had no specimens from 

 New Zealand or Australia, and suggested that search would show that 

 several forms of Symphyla would certainly be found in both of these countries. 

 Dr. Hansen's opinion has now been confirmed as far as New Zealand is 

 concerned. 



The specimen I am describing in this paper was among some Myriapoda 

 from Ben Lomond, Lake Wakatipu, collected by Mr. T. Hall, and forwarded 



* Ryder, F. A. Amer. Naturalist, vol. 14. pp. 821. 822, 1880. 

 f Hansen, H. J. Q.J.M.S., vol. 47. pp. 1-101, pi. 1-7, 1904. 



