U.S. NATIONAL MUSEUM BULLETIN 291 



ML, 



Sex milli- Ship Sta. 

 meters 



List of Material 



Location 



Date 



Holotype: 

 M 49 



V 8714 33°14'45"N 118°37'20"W 7 VI 63 



Paratypes: 



23 

 20 



M 

 M 



19 



V 10540 29°05'04"N 118°12'00"W 



V 10377 33°25'00"N 118°50'45"W 



V 10976 32°35'00"N 120°35'06"W 



6 

 24 

 17 



IV 65 

 II 65 

 II 66 



Other material: 



M 19 V 11169 3r40'25"N 120°22'42"W 



1? 17 V 9905 29°28'14"N 119°02'58"W 



L 16 V9661 33°08'20"N 119°12'35"W 



L 16 V 8700 33°15'30"N 118°33'45"W 



L 14 V 9056 33°12'42"N 118°32'15"W 



L 13 V 10973 32°37'45"N 120°24'30"W 



L 12 V 10730 33°27'40"N 118°52'50"W 



L 11 V 10973 .32°37'45"N 120°24'30"W 



L 10 V 11189 32°25'06"N 118°08'20"W 



L 9 V8349 33°26'38"N 118''54'15"W 



31 

 8 

 14 

 25 

 14 

 16 

 26 

 16 



VII 66 

 VIII 64 

 IV 64 

 VI 64 

 XI 63 

 II 66 

 IX 65 

 II 66 

 4 VIII 66 

 7 XII 62 



Depth, 

 meters * 



1200 



1300 

 1100 

 1300 



1300 



800 

 1000 



800 

 1100 



850 

 1000 



850 

 i-900 

 1000 



' Estimated depths of capture. All specimens were captured by a 10' Isaacs-Kidd midwater trawl. 

 2 L refers to larval or juvenile specimens of undetermined sex. 



The funnel is very large, prominent, and long; it extends anteriorly 

 to a point in line with the anterior borders of the eye openings. The pos- 

 terior part of the funnel and the collar are bound to the post ero ventral 

 and posterolateral surfaces of the head with integument and gelati- 

 nous, subcutaneous tissue. The funnel groove is very shallow, almost 

 nonexistent. A small pore lies at the base of the funnel groove where 

 the dorsal part of the funnel fuses with the head. 



Cartilaginous funnel components of the locking apparatus are simple 

 and elongate with a smooth, shallow, median sulcus. The mantle com- 

 ponent is a simple, straight ridge that articulates with the funnel lock. 



The dorsal member of the funnel organ is an inverted, roughly Y- 

 shaped structure with short, broad limbs. A spatulate papilla extends 

 anteriorly from the anterior limb of the Y-structure. The ventral pads 

 have straight, diagonal anterior borders, nearly parallel sides and 

 narrow, rounded posterior borders. A thin, broad funnel valve is 

 present. 



The head is long and narrow ; it is flattened dorsoventrally. The eyes 

 are very large and are directed anterolaterally. The borders of the eye 

 openings are circular ; they lack an optic sinus. A minute, stubby olfac- 

 tory papilla occurs on each side of the posterolateral surface of the 

 head just anterior to the nuchal region. Nuchal folds and crests are 

 absent. 



