sirxiHLL.v c.R.vriijs. 193 



Lat. 25° 22.4' S., lonf;, 107° 45' W. 300 fni,-^. lo siirfaco. 2 .'^peciraon.s. 



Lat. 24° 40.3' S,, ions. 107° 5,3' W. Surface. 7 -sppcinions. 



Lat. 22° 50,4' S,, long, 105° 31,7' W. Surface. 1 specimen. 



Lat. 20° 2S.S' S,, Ions. 103° 20,3' ^^■, Surface, 5 specimens. 



Lat. 1,8° 39.5' S„ long, 102° \V, Surface, 1 .specimen. 



Lat. 10° 55.3' S,, long, 100° 24,0' W. Surface. 1 s|)ecimen. 



Lat. 14° IS. 7' S,, long, 98° 45,8' W, Surface, 1 specimen. 



Lat. 10° 15,2' S,, long, 95° 40,8' W. 300 fms, to surface. 1 specimen. 



Lat. 9° 30.5' S., long, 95° 8,3' W. Surface. 1 sjiecimon. 



Lat. 7° 5' S., long, 93° 35,5' W. Surface. 11 spociniens. 



Lat, 5° 32.4' S., long, 90° 32,2' W. Surface. 1 specimen. 



Lat. 7° 13,3' S,, long, 102° 31,5' W, Surface, 1 specimen. 



Lat. 10° 14,3' S., long, 107° 45.5' W. Surface. 14 si.i-cimens. 



Lat. 11° 38,3' S,, Kmg, 110° 5' \V, Surface, 7 ,-<pei-inicns, 



Lat, 13° 03' S,, long, 112° 44,9' W. Surface. 12 specimens. 



Lat. 14° 15' S., long. 115° 13' W. Surface. 6 specimens. 



Lat. 8° 29.7' S., long. 122° 50' \V, Surface. 1 siiocimon. 



Remarks. — Adult specimens of Isnth se.xes vary extremely in length. The 

 smallest female with marsupium (from Sta. 4702) is 4.4 mm. long, another 

 female (from Sta. 4696) scarcely 4.5 mm., while the largest female (from Sta. 

 4680) is 9.6 mm. from the end of tlie frontal plate to the tip of the telson. One 

 of the smallest males (from Sta. 4678) is 6.6 mm., aiid the largest male (from 

 Sta. 4677) is 9.8 mm. The number of spines on the distal part of the outer 

 margin of first joint of the exopod of the uropods ^•aries from 3 to 6. 



Three females from Sta. 4727, two from Sta. 4680, and one female from 

 Sta. 4611 and from Sta. 4671, have an Epicarid, probably Dajus siriclluc G. O. 

 Sars, in the marsupium. 



Distribution. — According to the literature and the collections seen by me 

 this species is widely- distriljuted in the tropical and wtirmer temperate areas of 

 the Atlantic, the Indian Ocean, and the Pacific; the Copenhagen Museum 

 possesses specimens from about fifty places in these Oceans. In the Atlantic 

 it has been taken northwards to Lat. 42'^ N., long. 44° W., southwards to Lat. 

 40° 32' S., long. 52° 2' W., in the Indian Ocean southwanls to Lat. 40° 4' S., 

 long. 53° 25' E. (si)ecimens from these three localities in the Coi^enhagen ]\Iu- 

 seum); in the Pacific it was taken at Lat. 33° 40' N. in 1904, and .southwards 

 it is known from a point l)etween Sidney and Wellington ((J. O. Sars). It 

 has generally be(Mi captured at the surface; I am even inclined (o think tliat 

 the specimens from the three Stations named above from "300 fms. to surface" 

 were taken near the surface. 



11, Siriella gracilis D.\na. 



1852, Siridla (/ninlix D.\N.\, V. S. Expl. E.\p, Crust .. 1, p. 058, pi. 44. figs, la-lg. 

 1885. Siriella gracilis G. O. S.\RS, Challenger Kept ,, 13, p. 20'.t, pi 30, tigs, 25-28. 

 1910. Siriella gracilis H. J. Hansen, Siboga-IOxp., 37, p. 31. 



