344 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



0° 42' 00" S., long. 121° 44' 00" E.) ; 1,375 meters (752 fathoms) j 

 November 20, 1909 ; gy. M. 



One specimen (Cat. No. E. 156, U.S.N.M.). 



Albatross station 5617; Dodinga Bay, Gillolo Island; Ternate 

 Island (SE.) bearing S. 45° W., 12.97 kilometers (7 miles) distant 

 (lat. 0° 49' 30" N.,long. 127° 25' 30" E.) ; 239 meters (131 fathoms) ; 

 November 27, 1909. 



One specimen (Cat. No. E. 118, U.S.N.M.). 



Albatross station 5648; Buton Strait; North Island (S.) bearing 

 N. 87° E., 18.90 kilometers (10.2 miles) distant (lat. 5° 35' 00" S., 

 long. 122° 20' 00" E.) ; 1,022 meters (559 fathoms) ; December 16, 

 1909 ; gn. M. 



One specimen (Cat. No. E. 122, U.S.N.M.). 



Albatross station 5657 ; Gulf of Boni, Celebes ; Olang Point bear- 

 ing N. 61° W., 28.72 kilometers (15.5 miles) distant (lat. 3° 19' 40" 

 S., long. 120° 36' 30" E.) ; 900 meters (492 fathoms) ; December 19, 

 1909 ; gy M. 



Four specimens (Cat. Nos. E. 120, E. 121, U.S.N.M.). 



Notes. — The study of the large series of specimens collected by the 

 Albatross has lead to quite unexpected conclusions which for a long 

 time I hesitated more or less to admit. The examination of these 

 specimens and their comparison with other Bathypectinuras from 

 different localities which I had referred to different species, has lead 

 me to the conclusion that B. conspicua is a very variable form, and 

 that it is not possible to separate from it B. elata and B. modesta 

 from which I had previously distinguished it. I should not even be 

 surprised if it should be found that Lyman's B. heros and B. lacter- 

 tosa should also be united with B. conspicua. 



I described B. conspicua in 1896 from specimens collected by the 

 Investigator in the delta of the Godavery at a depth of 110 fathoms, 

 and the principal characters of this species were the very large size, 

 the diameter of the disk reaching 40 mm.,' the shape of the mouth 

 shields, which are a little broader than long, the number of the arm 

 spines, which are at first four, falling to three at a little distance 

 from the arm base, the occurrence of numerous pores between the 

 under arm plates at the base of the arms, and the presence of a large 

 tentacle scale. I rediscovered B. conspicua in the Siboga collection, 

 that ship having collected this species at different stations between 

 0°-9° S. latitude and 116°-119° E. longitude, at depths varying from 

 538 to 2.029 meters (295 to 1,110 fathoms) ; the diameter of the disk 

 of these specimens was between 25 mm. and 50 mm. 



I thought it necessary to distinguish in the Siboga collection a 

 species smaller than the majority of the specimens of B. conspicua, 



