NEMATOSCKI.IS MICROPS. 259 



copulatory organs possess the three i)rocesses on the inner lol)e, Imt the spine- 

 shaped process is nearly straight and nearly parallel with the two others which 

 are inserted on the end of the lolie; the lateral process is never hook-shaped 

 and an additional i:)rocess is wanting. — The females carry their eggs. 



It may be added that in the majoi'ity of the species the rostrum is rather 

 long or extremely so in the female, much smaller or <[uite rudimentary in the 

 adult male. 



Six species are known. They may l)e dix'ided into two groups separated 

 by some sharp and interesting characters. 



A. AlaxiUuIac with a pseudc.ro pod well developed. First eloiKjote pair of thoracic. 



legs unth long spines both from the terminal joint and from the distal end of 

 the penultimate joint. Endopod of second to fifth pairs of tlioraeic legs 

 with the full number, viz. three, joints beyond the knee. 



B. AlaxiUulae ivithout pseudexopod. First elongate pair of thoracic legs with 



long spines only from the termitod joint. Endopod of second and third 

 pairs of thoracic legs with but two joints beyond the knee; endopod of fourth 

 and fifth pairs with only one joint beyond, the knee. 



Group A comprises two species, l)ut they are not represented in the 

 material received from Dr. Agassiz. CJroup B comprises four species which 

 can be separated by the key in the "Siboga" paper, p. 107; three of these 

 species are dealt with below. 



27. Nematoscelis microps G. O. Sars. 



Plate 9, figs. 4:i-4d; Plate 10, figs, la-lb. 



1883. Nematoscelis micrnps. G. O. Sars, Forh. Vid. Selsk. Christiania for 1S83, no. 7, p. 28. 

 1885. Netnaloscelis micrnps G. O. Sahs, Challenger Rept., 13, p. 131, pi. 25, figs. 1-4. 

 1910. Nematoscelis microps H. .1. Hansen, Siboga-Exp., 37, p. 107, pi. 15, figs. 2a-21<. (With full 

 synonymy). 



Sta. 4679. Dec. 7,1904. Lat. 17° 26.4' .•^,, long. 8G° 46.5' \V. 300 fms. to surface. 1 specimen. 



Sta. 4681. Dec. 8,1004. Lat. 18° 47.1' S., long. 89° 26' W. 300 fms. to surface. specimens. 



Sta. 4683. Dec. 9,1904. Lat. 20° 2.4' S., long. 91° ,52.5' \V. 300 fms. to .surface. 3 .specimens. 



Sta. 4685. Dec. 10, 1904. Lat. 21° 36.2' S., long. 94° 56' W. 300 fms. to surface. 1 1 specimens. 



oi Aro~ r, 11 inn ( T i ooo <n c u 1 n-o on p' «' ( 300 fms. to Surface. 3 specimens. 



Sta. 468/. Dec. 11, 1904. Lat. 22 49.5 S., long. 9/ .30.6 W .- „,.-,^ , , , ' . 



( 2125 ims. to surface. 1 specunen. 



Sta. 4689. Dec. 12, 1904. Lat. 24° 5' S., long. 100° 20' W. .300 fms. to surface. 1 specimen. 



Sta. 4691. Dec. 13, 1904. Lat. 25° 27.3' S., long. 103° 29.3' W. .300 fms. to surface. 5 .specimens. 



Sta. 4695. Dec. 23, 1904. Lat. 2.5° 22.4' S., long. 107° 45' \V. 300 fms. to surface. 2 specimens. 



Sta. 4701. Dec. 26, 1904. Lat. 19° 11.5' S., long. 102° 24' W. 300 fms. to surface. 4 specimens. 



Sta. 4703. Dec. 27, 1904. Lat. 17° 18.6' S., long. 100° 52.3' 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. 12 specimens. 



Sta. 4707. Dec. 29, 1904. Lat. 12° 33.2' S., long. 97° 42' W. 300 fms. to surface. 2. specimens. 



Sta. 4729. Jan. 19, 1905. Lat. 14° 15' S., long. 115° 13' \V. Surface. 1 .specimen. 



