636 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



The list on the following pages shows that the collection is a very 

 large one, being preserved in more than 200 vials and bottles, and 

 comprising 29 species. Two of these species are new to science, but 

 it may be pointed out that they are closely allied to weU-known species ; 

 and here a comparison with the Sihoga collection may be of interest.* 

 The Sihoga collected 25 species of Euphausiacea, and only three of these 

 (Bentheuphausia amhlyops G. O. Sars, Euphausia paragibha H. J. 

 Hansen, and Stylocheiron insulare H. J. Hansen) are not represented 

 in the Philippine material. Consequently this latter collection con- 

 tains seven species not obtained b}^ the Sihoga; two of these species 

 are new to science, but the five remaining species (Thysanopoda 

 pectinata Ortmann, T. cornuta Illig, Eupliausia recurva H. J. Hansen, 

 E. hrevis H. J. Hansen, and Nematohrachion Jlexipes Ortmann) are 

 all known from the eastern tropical Pacific as well as from the 

 Atlantic. It may be added that all the species from the Philip- 

 pines excepting five, namely, three species of Eupliausia (E. similis 

 G. O. Sars, E. liemigilha H. J. Hansen, and E. sihogce H. J. Hansen), 

 and the two species established in the present paper, are known from 

 the eastern tropical Pacific or the Fiji Islands and have been dealt 

 with in my work on the Agassiz Schizopoda.- As aU the Philippine 

 forms — excepting the two new species — have been mentioned or 

 described and figured either in the Sihoga work or in the paper just 

 mentioned, I have considered it unnecessary to give references to the 

 literature or to deal with geographical distribution. Moreover, in a 

 paper on the Euphausiacea of the United States National Museum 

 recently published,^ almost aU the species enumerated in the following 

 pages have been mentioned, as that Museum possessed them from 

 other areas. 



In hauls from 100 to 350 fathoms or more, frequently several 

 species were present, while hauls from near the surface generally con- 

 tained only a few fomis or even a single species, but not infrequently 

 an enormous number of specimens of one or two species. Four 

 species, namely, Thysanopoda tricuspidata Milne Edwards, Eupliausia 

 pseudogihha Ortmann, and especially Euphausia diomedeae Ortmann, 

 and Pseudeuphausia latifrons G. O. Sars, have not only been taken at a 

 number of places, but sometimes in such largo numbers that one may 

 safely conclude that these animals have considerable value as food 

 for fishes. But it need scarcely be said that an investigation of a 

 large number of stomachs of various food-fishes must bo undertaken 

 before it will be possible to pronounce a well-founded judgment on 

 the relative significance of the species of Euphausiacea as food 

 material. 



' See my report in S/fto^o-Expeditie, monograph 37, 1910. 

 s Mem. Mus. Comp. Zool., vol. 35, No. 4, 1912. 

 3 Proc. U.S. Nat. Mus., vol. 48, 1915, pp. 59-114. 



