100 U.S. NATIONAL MUSEUM BULLETIN 234 



Matocot Pt., Verde Island Passage, fine sand and pebble, in 421 m., 

 June 8, 1908. 1 9 ML 50.0 mm., Sta. D5626, off Kayoa Id., gray 

 mud and fine sand, in 485 m., Nov. 29, 1909. 1 9, ML 46.5 mm., Sta. 

 D5184 off Lusaran Lt., between Panay and Negros, green mud, bot- 

 tom temperature 49.8° F, in 1,032 m.. Mar. 30, 1908. 1 9, ML 34.0 

 mm., Sta. D5444, off Atalaya Pt., Batag Id., east coast of Luzon, 

 green mud, in 564 m., bottom temperature 45.3° F, June 3, 1909. 

 1 9, mangled, Sta. D5664 off Kapoposang Lt., Macassar Straits, hard 

 bottom, in 732 m., Dec. 28, 1909. 1 cf, ML 23.0 mm., 4 99, ML 

 38.0-44.0 mm., Sta. D5392 off Tubig Pt., Destacado Id., between 

 Samar and Masbate, green mud and sand, in 297 m.. Mar. 13, 1909. 

 1 cf , ML 32.0 mm., 11 99, ML 31.0-44.0 mm., Sta. D5396 off Pana- 

 laugan Pt., Talajit Id., between Samar and Masbate Id., hard bottom, 

 in 250 m., Mar. 15, 1909. 



Description. — Thirty-two specimens of this species are in the 

 collections: 28 females and 4 males (ML 23.0-50.0 mm.), including 

 gravid females and males with spermatophores. The means of all 

 measurements and counts are given in the table on page 105. 



The mantle is of medium length and slender, the width 28.5 to 32.3 

 percent of the length, widest at the anterior margin, and tapering 

 gradually to a point posteriorly. The dorsal mantle margin is slightly 

 produced in the midline, but ventrally it is emarginated beneath the 

 funnel. It is muscular except for the posterior fourth which is nearly 

 transparent. The posterior end tapers to a long point, the lateral 

 margins confluent with the posterior end of the fins. The gladius 

 shows through the mantle dorsally as a dark line. 



The fiQs are large, about 66.0 percent of the mantle length, their 

 width about 80.0 percent. The anterior margins are free, the anterior 

 lobe projecting forward. The anterior margin of the fins is convex, 

 the fins rather sharply pointed laterally, the posterior margin concave. 

 Posteriorly they are united and drawn out into a long slender point. 



The head is short and compact, about a fom-th the mantle in length 

 and about a third the mantle length in width. The eyes are large 

 and prominent, although the eyelid may be almost completely closed 

 in some specimens. The sinus is minute, indistinct, and somewhat 

 closed. 



The funnel is large but only the anterior extremity projects beyond 

 the ventral mantle margin. The mantle locldng apparatus is simple, 

 consisting of a straight groove on the funnel and a corresponding ridge 

 on the mantle. The funnel organ consists of a prominent inverted 

 V-shaped dorsal pad with short broad arms, and stout oval ventral 

 pads. 



The arms are moderately long (MAI 37.8-48.5) in the order 2.4.3.1. 

 The arms are squarish with the exception of III which is flattened 



