DR. F. A. JENTINK. MAMMALS. I79 



Perameles doreyana Quoy et Gaimard. 



X 3 . 91. cf. Lorentz River, March 16. 1910 (skin with skeleton). 

 N . 270. Ç. Alkmaar, September 20. 1909 (skin with skeleton). 

 N°. 306. cf. Alkmaar, October 6. 1909 (skin with skeleton). 

 N°. 342. cf. Alkmaar, November 1909 (skin with skeleton). 

 N°. 462. cf. Rivier Camp, February 12. 1910 (skin with skeleton). 

 N°. 480. (f. Near Bivak Island. February 23. 1910 (skin with skeleton). 

 cf. (without number). Alkmaar, December 1909 (skeleton). 



mm. mm. 



N°. 91 : head and body 410 skull: condulo-basal length .... 70 



tail 82 basai length 66 



ear 24 greatest breadth 30 



hindfoot 59 nasals, length 33 



palatal length 45 



Thèse measurements agrée very closely with those given, in text p. 102 and on plate 

 16, by Ouoy and Gaimard of the type-specimen, an adult maie from Doré (Voyage de 

 l'Astrolabe, 1830, Tome premier, Zoologie); and N°. 91 is a very old spécimen, as may be 

 concluded from having in the skeleton the presternum strongly keeled, the ischium-bones 

 strongly ankylosed so that there is nearly no symphysis to be seen ; the distance between 

 the two thyroid foramina is very broad, still much broader than i-n the other six skeletons 

 before me, and the border of the ischium between the two tuberosities is but slightly arched. 

 The measurements of the skull very closely agrée with those given by THOMAS (Catalogue, 

 p. 249) of an adult female ; those of the aged maie are after THOMAS much larger (see 1. c. 

 p. 249). Now there are among the doreyana-skuWs before me larger and smaller ones, not- 

 withstanding both perfectly adult and maies. 



9 



r(c?)- 



270 (9). 



306(0 



")• 342 (c 



")■ 4 



80 (cT). c?- 



condulo-basal length . 



70 - 



- — 



— 88 



72 



— 



— — 81 



basai length .... 



66 - 



■ — 



- 83 



— 68 



— 



— 77 



greatest breadth. . . 



30 - 



■ — 



— 30 



— 26 



— 



30 — 29 



nasals, length. . . . 



33 — 



34-5 



— 41 



— 35 



— 



41 — 41 



palatal length . . . 



45 - 



47 



— 55 



— 45 



— 



55 58 



Dr. COHN (Zoologischer x\ 



Tzeiger, 



1910, 



p.p. 71 



8-727) 



also 



has been str 



différence in length a. s. o. of the Perameles doreyana crania at his disposition ; for him a 

 reason to split up doreyana in „mehrere Untergruppen" (1. c. p. 721), however only giving 

 names to two of them, viz. P. doreyana typica and P. doreyana alticeps (1. c. p. 724), but on 

 p. 725 he calls them P. d. typica and P. d. brevicepsl From the aboyé given measurements 

 taken from spécimens ail from the same locality it is clear that a giving of distinct names 

 has in this case no meaning at ail. 



The skeleton of Perameles differs in several points from that of the other Marsupials ; 

 besides that the clavicles, présent in ail known Marsupials, are absent in Perameles, I mention 

 the following peculiarities : the spinous process of the epistropheus is very broad and strongly 

 developed; the prescapular is a much broader plate than the postscapular bone ; the presternum 



