78 



PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



Only one specimen, a female, was collected at Mororan, Japan, on 

 the shore. 



Type-specimen. — Cat. No. 39497, U.S.N.M. 



Family CXROLANIDiE. 

 Genus BATHYNOMUS A. Milne Edwards. 



BATHYNOMUS DODERLEINI Ortmann. 



Bathynomus doderleini Ortmann, Proc. Acad. Nat. Sci. Phila., 1894, pp. 191- 

 193.— Bouvier, C. R. Acad. Sci., vol. 132, pp. 643-645. — A. Milne Edwards 

 and Bouvier, Mem. Mus. Conip. Zool. Harvard College, vol. 22, No. 2, 1902, 

 pp. 159-165, pis. 7, 8. 



Locality. — Two fine specimens were collected at station 5067, in 

 Suruga Gulf, Japan, at Ose Saki, 50° E., 6.5 miles (lat. 35° 05' 50" 

 N.; long. 138° 41' 15" E.). 



Depth. — Two hundred and ninety-three fathoms in broken sand 

 and shells. 



The type-specimens of this species were collected in Sagami Bay, 

 near Enoshima, Japan. The flagelli of the second pair of antennae 

 were broken in both specimens, the longest fragment being com- 

 posed of 25 articles and reaching to the end of the first segment of 

 the thorax. In the two perfect specimens obtained by the Bureau 

 of Fisheries steamer Albatross, the flagelli are entire and extend to 

 the posterior margin of the fourth thoracic segment in one specimen 

 and almost to the posterior margin of the fifth thoracic segment in 

 the other specimen. The articles in the flagellum number about 73. 



Family CORALLANIDJE. 

 Genus ALCIRONA Hansen. 



ALCIRONA NIPONIA, new species. 



Body narrow, elongate, nearly three times as long as wide (4 mm. : 

 11 mm.). Surface smooth. Color, in alcohol, pale yellow. 



Head twice as wide as long (1 mm.: 2 mm.). Anterior margin 

 widely rounded. Eyes small, round, composite, and situated in the 

 post-lateral angles. The first pair of antennae have the first two 

 articles of the peduncle short and subequal; the third is about one 

 and a half times longer than the first two combined; the flagellum 

 is composed of about 11 articles and does not quite reach the pos- 

 terior margin of the first thoracic segment. The second antennae, 

 with a flagellum of 19 articles, extend to the posterior margin of the 

 third thoracic segment. 



The segments of the thorax are about equal in length with the 

 exception of the first, which is a little longer. Epimera are present 

 on all the segments, except the first; those of the second and third 



