STYLOCIIEIHOX AliHlJKVIATrM. 281 



Sta. 4679. Dec. 7, 1904. Lat. 17° 20.4' S., long. SG" 40.. 5' W. 300 fms. to surface. 3 specimens. 



Sta. 4G81. Dec. 8,1904. Lat. 1S° 47.1' S., long. 89° 26' W. 300 fms. to surface. 2 specimens. 



Sta. 40,S.'-j. Dec. 10, 1904. Lat. 21° 30.2' S., long. 94° 50' W. 300 fms. to surface. 4 specimens. 



Sta. 4087. Dec. 11, 1904. Lat. 22° 49.5' S., long. 97° 30.0' W. 300 fms. to .surface. 1 s])ecimen. 



Sta. 4089. Dec. 12, 1904. Lat. 24° 5' S., long. 100° 20' \V. 300 fms. to surface. 1 sjiecimen. 



Sta. 4091. Dec. 13, 1904. Lat. 25° 27.3' S., long. 103° 29.3' \V. 300 fms. to surface. 3 specimens. 



Sta. 4095. Dee. 23, 1904. Lat. 2.5° 22.4' S., long. lt)7° 45' \V. 300 fms. to surface. 1 specimen. 



Sta. 4099. Dec. 25, 1904. Lat. 21° 39.5' S., long. 104° 29.8' W. 300 fms. to surface. 1 specimen. 



Sta. 4705. Dec. 28, 1904. Lat. 15° 5.3' S., long. 99° 19' W. 300 fms. to surface. 2 specimens. 



Sta. 4707. Dec. 29, 19(J4. Lat. 12° 33.2' S., long. 97° 42' \V, 300 fms. to surface. 5 specimens. 



Sta. 4709. Dec. 30, 1904 Lat. 10° 15.2' S., long. 95° 40. s' W. 300 fms. to surface. 1 specimen. 



Sta. 4719. Jan. M, 1905. Lat. 0° 29.S' S., long. 101° Itl.S' \V 300 fms. to surface. I siK-cimen. 



Sta. 4724. ,lan. 17, 1905. Lat. 11° 13.4' S., long. 109° 39' \V. 300 fms. to surface. 1 specimen. 



Sta. 4730. Jan. 20, 1905. Lat. 1.5° 7' S., long. 117° 1.2 \V. 300 fms. to surface. 1 specimen. 



Sta. 4734. Jan. 22, 1905. Lat. 17° 36' S., long. 122° 35, 0' \V. 300 fms. to surface. 1 specimen. 



Besides I have it from the iuUowiiiii; IdcaUties: — 



Sta. 3tiSI. .\ug, 27, 1899. Lat. 28° 23' N., long. 120° 57' \V. 100 fms. 2 .specimens. " .Mbatross." 

 Fiji Islands. m. South of Suva liglilslii|i. lice 11, 1S',I7. 15(1 fms. 1 specimen. .\. .\g:i.ssiz. 

 Fi.ii Islands. 3 m. South of Suva lightship. Dec. 11, 1S97. 1(10 fms. 1 specimen. .\ . .\g;ussiz. 

 Fiji Islands. 3 m. South of Suva lightship. Dec. 11,1S97. 150 fms. 1 specimen. .\. .\ga.ssiz. 



Ill the "8il)oga" paper I pointed out the main differences between tliis 

 species and S. iiKixiinuin II. ,J. II. Hut ;is no adult male was found in the " Si- 

 boga" material, as the cojuilatory organs have ne\-er been figured, and the inter- 

 esting antennulae in adult males are unknown I gi\c some figures of these 

 and other parts witli the necessary descj-iption; the preservation of the females 

 in the collection does not allow corres])ondiiig figures of the antennular flagella 

 in this sex. 



Fig. 5a exliibits the anterior jiart of a male. The eye has the shajie char- 

 acteristic in this species; it is neai'ly iivriform, the lower area l)eing somewhat 

 or a little less than twice as broati, Init more than twice as dee]) as the upjjer. — 

 In the female the antennulae h:i\-e the two distal peduncular joints slender as 

 in the other species of the genus, and the thirtl .juint is conspicuously, though 

 not much, longer than the second; tlu* flagella are slender with rdund joints. 

 In the male the second and especially the third joint of the antennular peiluncles 

 is much thickened, the second slightly shorter than in the female, Itiit the third 

 slightly shorter than the second ;ind grti.diially nion' thickened towards the tnid. 

 The male antennular flagella are very characteristic (figs. .")b and .Ic); tiie upper 

 flagellum is somcnvhat shorter thttn the peduncle (fig. oa), (i-jointeij ; the four 

 proximal joints rtither slemler, but tiie first .n little exjianded towai'ds tlie btise, 

 the second extremely short, and the fourth is distinctly depressed and begins to 

 be a little expanded; the two distal joints together considerably longer than the 

 sum of the four j)roximal joints, fl.attened, the fifth distally much (>xi)and(Hl 

 inwards with the inner margin of the bro.idcst part finely serrate, the sixth 



