The triangular area explored in 1904 is in reality only a 

 rather small part of the Atlantic, and the number of stations 

 is low, but, nevertheless, the collection of Schizopoda is large 

 and very interesting ; the « filet à grande ouverture » must 

 therefore be an excellent instrument for the capture of such 

 forms. The size and quality of the collection may be proved to 

 a certain degree by a comparison with that secured by the 

 German PLANKTON-Exped'iùon in 1889. The numerous stations 

 of the latter expédition are distributed along a line between 

 the following places : Scotland, Cape Farewell, Bermudas, 

 Cape Verde, Ascension, Para, Azores, the Channel. Ortmann 

 enumerates 5 species of Mysidacea and 22 species of Euphau- 

 siacea (2 of his species of the latter order I have discarded as 

 synonyms) ; of thèse 2 forms of Mysidacea and 6 forms of the 

 other order were established as previously unknown species ; 

 the total amount is thus 27 species, 8 of which were new. The 

 collection gathered in 1904 contains 6 species of Mysidacea, 

 3 of which are new, and 20 species of Euphausiacea, 7 of which 

 are new, in ail 26 species, 10 of which are new, thus about the 

 same number as that procured by the PLANKTON-Expedhion 

 which explored the Atlantic from lat. 6o° N. to lat. 8° S., nearly 

 crossed it twice in very oblique directions, and had a high 

 number of stations. As already mentioned, the collection is 

 besides very interesting. Some species common at the surface 

 (as Siriella Thompsoni M. -Edw., Euphausia gracilis Dana, 

 Thysanopoda tricuspidata M. Edw.) are entirely wanting, 

 but several of earlier known forms and nearly ail the species 

 established as new are animais which generally or exclusively 

 live in considérable depths. Among the species already known 

 Bentheuphausia amblyops G. O. Sars ought to be mentioned. 

 This form, which in some important features déviâtes from 

 ail other Euphausiacea, was established by Sars on two 

 spécimens from the Atlantic, and it has not been found again 

 in that Océan, but the collection contains i3 spécimens from 

 7 stations of this true deep-sea form. Among the new forms 

 I may direct the attention to the two very large and aberrant 

 species of Thysanopoda, viz. T. insignis n. sp. and T. egregia 

 n. sp. Finally, the rien material of less than half-grown to 



