NEMATOSCELIS GRACILIS. 201 



that the pi'ofc't;.ses arc so luii;lil3' (IcNclopcil in males hclni-c llicir last iiioiill ; 

 that such specimens are immature can easily be seen by comparing the distal 

 joints of their antcnnular peduncles with those in adult specimens. 



One of the largest females is 21 mm. long, an adult male l(j nun. and an 

 immature male 13 mm.; fig. 4c, fig. 4a, fig. 4b exhibit the front part of these 

 specimens. 



Distribution. — The list above shows that all localities excepting one are 

 situated in a transverse southern belt of the area explored, between about Lat. 

 12° 33' S. and Lat. 25° 27' S., and that the belt is rather far from reaching the 

 West coast of South America; a single locality (Sta. 4742) is situated near the 

 line. — In the "Siboga" paper a good number of Stations in the Indian Archi- 

 pelago were enumerated, and besides it was stated that I have this species in 

 the Monaco material from the warmer temperate northeastern Atlantic. Sars's 

 type is from the "Pacific, North of the Sandwich Islands." But all the locali- 

 ties enumerated in the literature before the "Siboga" paper must be considered 

 valueless, because N. microps has been confounded with A'', atlantica H. J. H., 

 N. gracilis H. J. H. — both species established in 1910 — and partly even with 

 N. tenella G. O. S. I have seen Ortmann's specimens from the first six of the 

 eight localities enumerated for N. microps in 1894, and all belong to the two 

 following species. N. microps is very rarely taken at the surface. 



28. Nematoscelis gracilis H. J. Hansen. 

 Plate 10, fig. 2a. 



1910. Nematoscelis gracilis H. J. Hansen, Siboga-Exp., 37, p. 109, pi. 15, figs. 3a-3g. 



Lat. 15° 58' N., long. 98° 13' W. 300 fms. to surface. 3 specimens. 

 Lat. 12° 21' N., long. 92° 13' W. 300 fms. to surface. 1 small specimen. 

 Lat. 10° 33' N., long. 88° 30' W. Surface. 53 small specimens. 

 Lat. 9° 45' N., long. 86° 20' W. 300 fms. to surface. 10 small specimens. 

 Lat. 4° 35.4' N., long. 83° 32.3' W. 300 fms. to surface. 10 specimens. 

 Lat. 1° 31' N., long. 86° 32' W. 300 fms. to surface. 10 specimens. 

 Lat. 4° 1.6' S., long. 89° 16.3' W. 300 fms. to surface. 7 specimens. 

 Lat. 5° 17' S., long. 85° 19.5' W. 300 fms. to surface. 9 specimens. 

 Lat. 5° 22' S., long. 84° 39' W. 300 fms. to surface. 6 specimens. 



[ 100 fms. to surface. 9 specimens. 

 Lat. 5° 44.7' S., long. 82° 39.5' W. \ 200 fms. to surface. 2 specimens. 



[ 400 fms. to surface. 6 specimens. 

 Lat. 5° 57.5' S., long. 80° 50' W. 400 fms. to surface. 1 specimen. 

 Lat. 7° 12.5' S., long. 84° 9' W. .300 fms. to surface. 2 specimens. 

 Lat. 8° 54.5' S., long. 86° 5.5' W. 300 fms. to surface. 14 specimens. 

 Lat. 10° 17' S., long. 88° 2' W. 300 fms. to surface. 1 specimen. 

 Lat. 11° 20.3' S., long. 88° 55.2' W. 300 fms. to surface. 5 specimens. 

 Lat. 11° 30.3' S., long. 87° 19' W. 300 fms. to surface. 4 specimens. 

 Lat. 11° 45' S., long. 86° 5.2' W. 300 fms. to surface. 19 specimens. 

 Lat. 11° 59.5' S., long. 83° 40.4' W. 300 fms. to surface. 3 specimens. 



