. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. New Zealand Galaxiidae • McDoivalt 395. Figure 32. Neochanna burrowsius (Phillipps), 108 mm , Gawler Downs, Hinds River System. Key to Species of Neochanna 1. Pelvic fins present .... N. burrowsius p. 395. Pelvic fins absent 2. 2. Median fins long, 14-19 rays, N. apoda p. 398. Median fins shorter, 11-16 rays, .... N. diversus p. 402. Neochanna burrowsius (Phillipps, 1926) Figure 32 Galaxias burrowsius Phillipps, 1926c: 531 (holo- type: DMNZ 521, seen; paratype:
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. New Zealand Galaxiidae • McDoivalt 395. Figure 32. Neochanna burrowsius (Phillipps), 108 mm , Gawler Downs, Hinds River System. Key to Species of Neochanna 1. Pelvic fins present .... N. burrowsius p. 395. Pelvic fins absent 2. 2. Median fins long, 14-19 rays, N. apoda p. 398. Median fins shorter, 11-16 rays, .... N. diversus p. 402. Neochanna burrowsius (Phillipps, 1926) Figure 32 Galaxias burrowsius Phillipps, 1926c: 531 (holo- type: DMNZ 521, seen; paratype: DMNZ 4646, seen; locality: a drain on the farm of the late Mr. A. Burrows, West Oxford, Canterbury); Stokell, 1949: 481. Galaxias burrowsii Phillipps, 1927a: 14, 1927b: 11; Stokell, 1938: 205. Saxilaga burrowsius: Scott, 1936: 110, 1966: 250. Paragalaxias burrowsii: Phillipps, 1940: 39. Diagnosis. Differs from N. apoda Giin- ther (Fig. 34) and N. diversus Stokell (Fig. 36) in the presence of pelvic fins, and of mesopterygoidal teeth in many examples; also in the shorter median fins and lower ray counts in these fins. Taxonomy. N. burrowsius has previously been included in the genus Galaxias, or in Saxilaga, which has characters intermedi- ate between Galaxias and Neochanna. In its general morphology, it is similar to N. apoda and N. diversus, but whereas these latter species have entirely lost the pelvic girdles and fins, they persist in N. bur- rowsius. It also often has a few weak meso- pterygoidal teeth, whereas Neochanna is usually described as having none. (In one specimen of N. diversus, I found a single tooth on each mesopterygoid.) These three species have the appearance of a radiation within the Galaxiidae, comprising species adapted to temporary creeks and bogs, which are able to aestivate when these dry up. They look like a single phylo- genetic lineage, and their osteology sup- ports this. Osteological examination has revealed characters that indicate close relat
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