DR. F. A. JENTINK. MAMMALS. 173 



Pogonomys Lorentzii Jentink. 



Nova Guinea, Vol. IX, Zoologie, p. 9 (October 1908). 



N°. 312. Old cf. Bivak Island, January 11. 1910 (skin and skeleton). 



N°. 333. Adult q". Alkmaar, December 17. 1909 (skin and skeleton). 



N°. 367. Young adult cf. Hellwig Mountains (2000 M.), November 1909 (skin with skull). 



N°. 389. Young adult Ç>. Bivak Island, December 25. 1909 (skin and skeleton). 



N°. 447. Old cf. Alkmaar, February 2. 1910 (skin and skeleton). 



N°. 452. Adult Q. River Camp, February 1. 1910 (skin and skeleton). 



N°. 455. Old cf. River Camp, February 11. 1910 (skin and skeleton). 



N°. 481. Young adult cf. Bivak Island, February 24. 1910 (skin and skeleton). 



Mammae : o — 2 = 4. 



3j£ — 3^3. — 3jV — 3£9 — 447 — 45^ — 455 — 481 



head and body . 175 — 145 — 135 — 175 — 195 — 178 — 180 — 155 



tail 1 ) 120 — 102 — 120 — 130 — 122 — 105 — 135 — 120 



hindfoot .... 36 — 33 — 26 — 34 — 35 — 32 — 39 — 34 



ear 16 — 15 — 15 — 18 — 18 — 13 — 18 — 16 



Skeleton with 13 thoracic, 7 lumbar, (3 — 5) sacral and up to 31 caudal vertebrae. N°. 481 

 has on the I4 th thoracic vertebra a well developed pair of ribs, at the expense of a lumbar 

 vertebra. Mesosternum with four segments, xiphisternum as long as three mesosternal segments. 



Pogonomys leucogaster Jentink. 



Nova Guinea, Vol. IX, Zoologie, p. 9 (October 1908). 



N°. 336. Adult cf. Alkmaar, October 7. 1909 (skin and skeleton); tail incomplète. 

 N°. 390. Adult cf. Bivak Island, December 25 1909 (skin and skeleton). 

 N°. 463. Old Ç. Regen Island, February 13. 1910 (skin and skeleton). 



336 — 

 head and body 175 — 



tail 145 (inc.) 



hindfoot ... 35 — 

 ear 13 (inc.) 



Skeleton with 13 thoracic, 7 lumbar, 3 sacral and up to 33 caudal vertebrae. Mesosternum 

 with four segments; xiphisternum nearly as long as three mesosternal segments. 



Mammae : o — 2 = 4. Very striking are the wholly black tail and the normally wholly 

 white coloured hairs at the underparts of the body. 



Mus terrae reginae Alston. 



N°. 3or. Old Q. Regen Island, September 30. 1909 (skin and skeleton). Tail incomplète. 



N°. 332. Very old cf. Alkmaar, November 1909 (skin and skeleton). Tail incomplète, and 



posterior extremities are wanting. 

 ^"°- 335- Very old Q. Alkmaar, November 1909 (skin and skeleton). 

 N°. 341. Old rf. Alkmaar, November 1909 (skin and skeleton). 

 N°. 343. Adult Q. Alkmaar, November 1909 (skin and skeleton). 

 N°. 344. Old Q. Alkmaar, November 1909 (skin and skeleton). 



390 - 



- 463 



170 - 



- 195 



146 - 



158 



33 ~ 



36 



15 - 



14 



1) Mostly incomplète. 

 Nova Guinea. IX. Zoologie. 23 



