256 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



Off Lae-o Ka Laau Light, Molokai, 238-255 fathoms. 

 Off Lae-o Ka Laau Light, Molokai, 259-266 fathoms. 

 Off Mokuhoouiki Islet, Pailolo Chauuel, 256-283 fathoms. 

 Oif Diamond Head Light, Oahu, 265-280 fathoms. 

 Off Ukula Point, Kauai, 444-478 fathoms. 

 Off Kawaihae Light, Hawaii, 687-692 fathoms. 

 Off Puuiawa Point, Maui, 238-253 fathoms. 

 Off Barber's Point Light, Oahu, 192-352 fathoms. 

 Eighteen specimens. 



BRISSINA Gray. 

 Rhinobrissus placopetalus A. Ao. and Clark. 



The specimens are small and immature, but the shape of tlie test and the large 

 petals flush with the test distinguish this species from any previously known. 

 The test of the largest is 14 mm. long and 12 mm. wide, lowest anteriorly and 

 sloping steadily upward to the posterior extremity, where it is highest. It is 

 widest at the abactinal system, which is just over the mouth. At this point the 

 vertical height is 8 mm., while at the posterior end it is 10 mm. The anterior 

 ambulacrum is flush, with few very minute pores. The other ambulacra are dis- 

 tinctly petaloid, scarcely sunken, and are subequal, 4 mm. long with 13 or 14 pairs 

 of pores. The peripetalous, anal, and subanal fascioles are all well developed. 

 The color is light yellowish-brown. 



Station 4146. Yicinity of Modu Manu, 23-26 fathoms. 

 " 4160. Vicinity of Modu Manu, 31-39 fathoms. 



Three specimens. 



Brissopsis luzonica A. Ag. 

 Kleinia luzonica Gray, 1851. Ann. Mag. Nat. Hist. (2) 1, p. 133. 

 Brissopsis luzonica A. Agassiz, 1872. Rev. Ech. Pt. 1, p. 95. 

 A good series of this species is found in the collection, but owing to the fragility 

 of tlie test (see Dbderlein, 1906) most of them are more or less badly broken. 

 Station 3836. Off Lae-o Ka Laau Light, Molokai, 238-255 fathoms. 

 3839. Off Lae-o Ka Laau Light, Molokai, 259-266 fathoms. 

 " 4044. Off Kawaihae Light, Hawaii, 198-233 fathoms. 

 " 4083. Off Puniawa Point, Maui, 238-253 fathoms. 



4131. Off Hanamaulu, Kauai, 257-309 fathoms. 

 " 4132. Off Hanamaulu, Kauai, 257-312 fathoms. 

 Twenty-four specimens. 



Brissopsis Oldhami Alcock. 



Brissopsis Oldhami Alcock, 1893. Jour. Asiat. Soc. Bengal, 62, Pt. 2, No. 4, p. 

 6 (174). 



Our specimens agree exactly with Alcock's description, but as he gives no 

 measurements and his figures are of a small specimen, it is not easy to see why he 



