22 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



ELEDONELLA. 

 Eledonella Verrill, '84, p. 144, Plate 32, Fig. 2. 



23. Eledonella diaphana. 



(Plate 5, Fig. 11.) 



Japetella diaphana Hoyle, '85 a, p. 232. 



Eledonella diaphana Hoyle, '86, p. 107, Plate 0, Figs. 3-6. 



Habitat. — Station 3366, east of Galapagos Islands ; February 27, 1891 ; lat. 

 5° 30' N., long. 86° 45' W., 1067 fathoms ; yellow globigerina ooze ; tempera- 

 ture, surface 84°, bottom 37. °0; one specimen 9, No. 7946. [H. 99.] 



Station 3415, S. E. of Acapulco; April 10, 1891 ; lat. 14° 46' X., long. 98° 

 40' W., 1879 fathoms ; brown mud, globigerina ooze; temperature, surface 

 83° bottom 36.°0; one specimen 9, No. 7960 A. [H. 101.] 



Station 3420, off Acapulco; April 12, 1891 ; lat. 16° 46' N., long. 100° 

 8' 20'' W., 664 fathoms ; dark green mud ; temperature, surface, 82°, bottom 

 39.°6; one specimen, No. 7947. [H. 100.] 



Station 220, about 12 miles southwest of west point of Kwajalong Island, 

 Marshall Archipelago ; January 16, 1900 ; lat. 8° 3S' N., long. 167° 37' E. ; 

 temperature, surface 82°, bottom 35°, 1897 fathoms, globigerina mud ; one 

 young specimen. [H. 129.] 



These specimens differ only in insigtiificant characters from the type in the 

 " Challenger " collection. The arms are proportionally a little shorter, but 

 the general appearance, the form and disposition of the chroniatophores, and 

 the shape of the suckers are identical. There is no valve in the funnel, and as 

 tliis character was recorded as doubtful in the case of the " Challenger " specimen 

 I have re-examined this latter with care, and feel now convinced that the ap- 

 pearance of a valve is due to the tip of the funnel or;jan (the pail alluded to in 

 the "Challenger" Report, p. 107), having become sejKirated from the wall of 

 the funnel. 



The specimens were all immature, so that no se.\ indications were found in 

 the viscera, but I conclude they are females because Verrill's e.xan)ple of E. 

 pyrpnaea, which was no lai-ger than the smallest of them, already showed the 

 enlarged suckers on the third pair of arms which are believed to be character- 

 istic of males. 



One of the specimens (No. 7960) shows the funnel organ vi ly well (Plate 

 5, Fig. 11). It consi.i^ls mainly of two pads broader behind than in front, where 

 they are jtrolonged into a kind of stalk and nearly meet, but are separated by 

 the tip of a much smaller pad lying in the middle line and directed backwards. 

 This median portion springs gradually from the dorsal wall of the funnel with- 

 out any clear line of demarcation. 



