Hydromys lawnensis Troughton, 1935b

Parnaby, Harry E., Ingleby, Sandy & Divljan, Anja, 2017, Type Specimens of Non-fossil Mammals in the Australian Museum, Sydney, Records of the Australian Museum 69 (5), pp. 277-420 : 355

Hydromys lawnensis Troughton, 1935b

Rec. Aust. Mus. 19(4): 253. (19 September 1935).

Common name. Water Rat.

Current name. Hydromys chrysogaster É. Geoffroy, 1804 ; following Jackson & Groves, (2015). Taxonomic status unresolved: several authors have noted the need for a detailed taxonomic review given the extensive size and colour variation within Hydromys chrysogaster (see Jackson & Groves, 2015).

Holotype. M.5650 by original designation. Male, [list No. 125], skull, study skin ( Figs 33–34 ), collected by E. Le G. Troughton on 16 June 1934, registered August 1934.

Condition. Incomplete cranium, jugal missing from both zygomatic arches, missing both upper left molars. Dentaries missing both lower right molars and the 1st lower left molar. Study skin, missing right ear tip and torn left ear tip.

Type locality. Lawn Hill Creek, Adel’s Grove, c. 12 miles south of Lawn Hill Station, Qld, Australia. [Adel’s Grove is the name of a homestead].

Paratype. M.5651 (allotype) by original designation. Female, skull, study skin, collected 17 June 1934, same details as holotype.

Comments. Evidently based on two specimens, registration numbers are given for both in the original description.

Figures

Figure 33. AM M.5650, holotype skin of Hydromys lawnensis Troughton, 1935b. (Photography by Sally Cowan).

Figure 34. AM M.5650, holotype skull of Hydromys lawnensis Troughton, 1935b. (Photography by Sally Cowan).