THE MYSIDS 



65 



Siriella gracilis, Dana 

 OCCURRENCE 



Station Latitude Longitude 



Depth 



Date 



Sample 



35- 

 35- 



36 

 36 

 37 



141 

 156 



05 22 N 



04 16 N 



05 59 N 



29 02 N 

 03 01 N 



79 59 W 

 79 47 W 

 82 56 W 



161 11 W 

 149 48 W 



Surface 

 Surface 

 50 m 



50 m 

 50 m 



1928 

 Oct. 27 

 Oct. 28 

 Nov. 1 



1929 

 Oct. 5 

 Nov. 4 



One adult male and nine juvenile 

 One adult male and seven juvenile 

 One juvenile 



One juvenile 

 One juvenile 



REMARKS 



It is interesting to note that no specimens of this 

 species occurred in the townet hauls made in the Atlan- 

 tic Ocean. This is in accordance with previous records 

 of its distribution. 



Siriella nodosa, H. J. Hansen 



S. nodosa, Hansen, 1910 

 S. nodosa, Colosi, 1918 

 S. nodosa, Colosi, 1920 



OCCURRENCE 



Moored in Guam Harbor, May 1929, surface townet, 

 8.10 to 9.50 p.m., light in net mouth, one female. 



DISTRIBUTION 



Hansen records this species from the Karkaralong 

 group of islands in the East Indian Archipelago, and 

 Colosi from the Torres Straits. The present station is 

 20° east of the Philippines. 



Siriella vulgaris, H. J. Hansen 



S. vulgaris, Hansen, 1910 

 S. vulgaris, Tattersall, 1922 

 S. vulgaris, Colosi, 1924 

 S. vulgaris, Tattersall, 1928 



OCCURRENCE 



Region of Samoa, April 1929, surface, two males and 

 two females. Moored in Guam Harbor, May 1929, sur- 

 face townet, 8.10 to 9.50 p.m., light in net mouth, four 

 males and one female. 



DISTRIBUTION 



The records of Hansen and Tattersall show that this 

 species is an inshore shallow-water form, found only in 

 the neighborhood of land. It has been recorded from nu- 

 merous stations in the East Indian Archipelago, Port 

 Blair in the Andaman Islands, and Flinders Island, North 

 Queensland. Colosi (1924) records the species from the 

 Arabian Sea without more precise definition of the local- 

 ity. The species is obviously widely distributed in the 

 tropical parts of the Indian and Pacific oceans, in suit- 

 able shallow-water localities. 



Siriella media, H. J. Hansen 



S. media, Hansen, 1910 

 S. media, Hansen, 1912 



OCCURRENCE 



Moored in Guam Harbor, May 1929, surface townet, 

 8.10 to 9.50 p.m., light in net mouth, four males and two 

 females. 



DISTRIBUTION 



Hitherto known only from the East Indian Archipel- 

 ago and the Gilbert Islands. The present record, there- 

 fore, represents a considerable easterly and northerly 

 extension of its known range. 



Siriella aequiremis, H. J. Hansen 



S. aequiremis, Hansen, 1910 

 S. aequiremis, Tattersall, 1911 

 S. aequiremis, Hansen, 1912 

 S. aequiremis, Colosi, 1918 

 S. aequiremis, Colosi, 1920 



OCCURRENCE 



Between stations 35 and 36, latitude 05° 22' north, 

 longitude 79° 59' west, surface, October 27, 1928, one 

 immature male. Moored in Guam Harbor, May 1929, 

 surface townet, 8.10 to 9.50 p.m., light in net mouth, six 

 immature females. 



REMARKS 



No adult males are present in the collection. The 

 immature male from the first station noted above shows 

 the characteristic coloration of the species mentioned by 

 Hansen (1910), "abdomen with black lateral spots." 



DISTRIBUTION 



The records of Hansen, Tattersall, and Colosi show 

 this species to be widely distributed throughout the whole 

 of the tropical parts of the Indian and Pacific oceans, 

 from the neighborhood of the Amirante Islands in the 

 western part of the Indian Ocean to stations off the coast 

 of Mexico and the Panama Isthmus. Like S. thompsonii 

 and S. gracilis, it is often an oceanic form, but is also 

 found nearer to land and even in the harbors of the Pa- 

 cific Islands. 



