164 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



tal border, which is also straight, is sometimes very slight sinuous; 

 the lateral angles are slightly rounded. They are all in contact. 



The side arm plates are poorly developed, especially on the dorsal 

 side; they carry three strong subequal spines, the length of which 

 equals at least a segment and a half. The two ventral spines are 

 cylindrical, with the tip rounded, while the dorsal spine is sharply 

 flattened; its extremity is also rounded. 



The two tentacle scales are extremely large, especially the distal, 

 which is inserted along the whole lateral border of the under arm 

 plate; it is squamiform and very broad. The proximal scale, in- 

 serted on the side arm plate, is smaller, triangular in form, with the 

 tip rounded. These two scales are very exactly in contact. 



The color of the specimen in alcohol is a light brownish yellow. 

 The dorsal plates at the tip of the two longer arms as preserved are 

 seen to show irregular brownish spots. 



I was very glad on receiving Matsumoto's work of 1917 to find 

 therein a description and figures of A. kochii, which confirmed abso- 

 lutely my determination. Matsumoto, who has examined numerous 

 specimens of A. kockii from Misaki, states that the species is very 

 variable. The form of the mouth shields which he shows agrees well 

 with that which I have observed in the specimen collected by the 

 Albatross, and I notice that on one of the two figures which he has 

 given of the dorsal surface, the mouth shield is appreciably longer 

 than in the other. The form of the mouth shields may therefore 

 vary to a certain degree, and this explains the difference which I 

 find between my specimen and Liitken's type. 



AMPHIPHOLIS LORIPES, new species. 



Plate 68, figs. 4, 5. 



Locality. Albatross station 5375; Marinduque Island and vicin- 

 ity; Tayabas Light (outer) bearing N. 49 W., 33.73 kilometers 

 (18.2 miles) distant (lat. 13 42' 15" N., long. 121 50' 15" E.) ; 196 

 meters (107 fathoms) ; March 2, 1909; gn. M. 



One specimen (Cat. No. 41190, U.S.N.M.). 



Description. The specimen is incomplete, and the dorsal surface 

 of the disk is torn ; the diameter of the part which remains scarcely 

 reaches 3 mm. The arms are narrow, extremely long, and must cer- 

 tainly reach 100 mm. in length. In spite of the incomplete state of 

 the only specimen, its principal characters may be perfectly well 

 recognized, and it can be shown that it does not belong to any known 

 species. 



The mouth shields are very large, longer than broad, lozenge- 

 shaped, with the angles very rounded and the sides slightly convex. 

 The adoral plates are small, triangular, with the borders slightly 



