236 THE SCHIZOPODA. 



Sta. 4706. Dec. 28, 1904. Lat. 14° 18.7' S., long. 98° 45.8' W. Surface. 4 specimens. 



Sta. 4707. Dec. 29, 1904. Lat. 12° 33.2' S., long. 97° 42' W. 300 fms. to surface. 6 specimens. 



Lat. 11° 40' S., long. 96° 55' W. Surface. 13 specimens. 



Lat. 10° 15.2' S., long. 95° 40.8' W. 300 fms. to surface. 25 specimens. 



Lat. 9° 30.5' S., long. 95° 8.3' W. Surface. 119 specimens (107 of which 



Lat. 7° 5' S., long. 93° 35.5' W. Surface. 7 specimens. 



Lat. 5° 35.3' S., long. 92° 21.6' W. 300 fms. to surface. 4 specimens. 



Lat. 4° 19' S., long. 91° 28.5' W. Surface. 5 specimens. 



Lat. 2° 18.5' S., long. 90° 2.6' W. Surface. 4 specimens. 



Lat. 5° 10' S., long. 98° 56' \V. 300 fms. to surface. 5 specimens. 



Lat. 7° 13.3' S., long. 102° 31.5' W. Surface. 1 specimen. 



Lat. S° 7.5' S., long. 104° 10.5' W. 300 fms. to surface. 17 specimens. 



Lat. 9° 31' S., long. 106° 30.5' W. 300 fms. to surface. 11 specimens. 



Lat. 16° 32.5' S., long. 119° 59' W. 300 fms. to surface. 1 specimen. 



Lat. 0° 3.4' N., long. 117° 15.8' W. 300 fms. to surface. 12 specimens. 



Lat. 0° 21.3' N., long. 117° 2.6' W. Surface. 8 specimens. 



Furthermore the species was taken by two earher expeditions. 



Fiji Isl. Dec. 11, 1897. 6 m. South of Suva lightship. 3 specimens. A. Agassiz. 



Fiji Isl. Dec. 11, 1897. 3 m. South of Suva lightship. 2 specimens. A. Agassiz. 



Hyd. Sta. 3789. Sept. 9, 1899. Lat. 2° 38' N., long. 137° 22' W. Surface. 39 specimens. 

 "Albatross." 



It may be added that specimens with the frontal plate more or less expanded, 

 thus the typical E. diomedeae sens. Ortmann, were found among the material 

 from the following Stations: — 4619, 4635, 4721, and 4742. 



To the description given in the "Siboga" Report a few notes may be added. 

 The figure of the anterior part of an animal of the typical E. diomedeae Ortmann 

 exhibits the enormous expansion of the frontal plate with the reduced rostrum. 

 The great majority of the "Albatross" specimens agree completely with the 

 "Siboga" specimens in having the short frontal plate developed nearly as in 

 E. recurva, and the rostrimi slender and about as long as the distal joint of the 

 eye-stalks, but in some few specimens, most of them males, the frontal plate is 

 quite enormous, very long and extremely broad, covering almost totally the 

 eye-stalks ; while the rostrum is very short, the plate has the front margin semi- 

 circular, and its surface is somewhat vaulted above each eye-stalk. Some other 

 specimens show the frontal plate and the rostrum intermediate in size and shape 

 between the two kinds of specimens mentioned; among the large number of 

 specimens from Sta. 4619 I have found scarcely half a score showing every stage 

 between the common form with the short and small fiontal plate and a form 

 similar to that exhibited in fig. 4a. In all other features and in the structure of 

 the copulatory organs the specimens with the greatly expanded frontal plate 

 agree completely with the common form. Ortmann estabhshed his E. diomedeae 

 on a couple of specimens with the frontal plate exceedingly large, but according 

 to my experience I must consider this development as an anomaly, taking 



