’s RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 283 
Btat 105. July 4. 6°8 N-, 1212197 EB. North of Sulu. Island. 
275 m. Coralbottom. 2 young specimens. 
Stat. 254. Dec. 10. 5° 40’ S., 132° 26’ E. Off the Kei-islands. 310 m. 
Bottom fine, grey mud. 2 adult males. 
In the typical Heterocarpus ensifer A. M.-Edw. (vide: M. J. Rathbun, 
in: U. S. Fish Commission Bulletin for 1903, Part III, Wash. 1906, 
Pl. XXI, fig. 7) the spine, into which the carina of the 4th abdominal 
tergum is produced, is but little shorter, when measured from the pos- 
terior margin of the somite, than that of the 3rd: in the variety parvi- 
spina, however, the spine of the 4th somite is considerably shorter 
and measures only one-fourth of the length of the preceding spine. 
In the typical Heteroc. ensifer A. M.-Edw., like also in this variety, 
the carapace appears slightly less high in proportion to its length 
than in Heteroc. sibogae and the first tooth of the postrostral crest is 
constantly planted a little anterior to the middle of the carapace. 
The first and the second abdominal terga are not carinate; nevertheless, 
in the adult species, the first tergum appears slightly angular dorsally, 
when looked at from behind, but the angle is rounded and smooth. 
On the 2nd tergum even this angle is rather inconspicuous, so that this 
tergum appears almost regularly rounded. 
Heterocarpus sibogae n. sp. 
Stat. 12. March 14. 7° 15° S., 115°15.6 E. Bali Sea. 289 m. Bottom 
mud and broken shells. 10 adult specimens, viz. 4 males and 6 females, 
5 of which are ova-bearing. 
Stat. 38. April 1. 7° 35.4 8., 117° 28.6 E. Bali Sea. 521 m. Bottom 
coral. 9 young specimens. 
Stat. 74. June 8. 5° 37.5 S., 119°0’ E. Southern entrance of Strait 
of Makassar. 450 m. (Chart.). Bottom Globigerina ooze. 6 specimens, viz- 
1 adult male, 1 ova-bearing female and 4 young individuals. 
pra tod: Aug. 4-0 11 S:, 127° 25 Bi North-of Batjan. 397m. 
Bottom mud, stones and coral. 3 adult males and 2 ova-bearing fe- 
males. 
Stat. 212. Sept. 26. 5°54’.5 $., 120°19.2 E. West of eaves 462 m. 
2 adult females, one of which “ail eggs. 
Stats 250. Wee. Vl. 5° 26.609. 132° 32.5 EH. Kei-islands. 397 m. 
Bottom greyish green mud. 7 adult epee viz. 2 males and 5 females, 
3 of which are egg-bearing. 
Stats 20208 Dec. 18.752 53.8 S., 132° 48.8. E. Kei-islands. 560 m. 
Bottom solid bluish grey mud, ree layer more liquid and brown mud. 
2 adult ova-bearing females. 
