36 University of California Publications in Zoology, H 



Ophiomusium jolliensis sp. nov. 



Fins. 2, 3. 



Diameter of disc 12 mm. Length of arm 2> L . times diameter 

 of disc. Disc covered with irregular plates, variable in size and 

 shape, the marginal interbrachial ones very Large. Five or six 

 paii's of mouth papillae to each jaw. Teeth very acute. Mouth 

 shields lanceolate, the point directed inward and sometimes sep- 

 arating the side mouth shields. Two genital openings in each 

 interbrachial space. One tentacle scale small and Mat. Only 

 three pairs of tentacle pores on arm (3 basal segments). The 

 three proximal ventral arm plates are pentagonal and hear ten- 

 tacular openings. The remaining ones are sub-triangular or 

 quadrangular with the inner margins convex. Dorsal arm plates 

 lanceolate with the poinl directed proximally. Two or three short 

 blunt arm spines. Color of preserved specimens cream or light 

 grey. 



San Diego M. B. 1..: 1026 (Station 6, San Clemente), 21~> fathoms. 972, 

 four miles W.N.W. of La Jolla, 125 fathoms. 1038 (Station 13), 308 fath- 

 oms. 974, three-fourths mile N.X.W. of I.a Jolla, 85 tat hums. 1027 (Sta- 

 tion 8, San Clemente), 330 fathoms. 1.134. 1541. 



Ophiomusium lymani W. Thos. 

 Pigs. 1, .1. 

 "Depths of the Sea," p. 172, figs. 32, 33. 



Diameter of disc 30 mm. Length of arm about 4-5 times 

 diameter of disc. Disc covered with irregular polygonal fused 

 scales. Radial shields very large and tuberculated, as is also the 

 large marginal scale between them. Five to seven rectangular 

 fused mouth papillae on each side. The outer ones may so fuse 

 as lo reduce the number. .Mouth shields narrow and pointed at 

 inner end. Side mouth shields large, meeting within, the outer 

 ends much broader than the inner. Genital openings usually 

 reaching only to the 2nd or 3rd arm joint, the inner ends curved. 

 Tentacle scales small and fiat. Tentacle pores in 1st and 2nd 

 arm joints only. Under arm plates in 1st and 2nd arm joints 

 only. Side arm plates meeting above and below. Upper arm 



