12 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 8 



largest, broad, slightly longer than broad with a rounded cutting edge. 

 Next papillae broad, flat, twice as long as broad. Inner 3 to 5 narrow, 

 acutely pointed, apical pair slightly largest. 



Interbrachial spaces below covered with a dense granulation and 

 bearing spines centrally but not along the large genital slits. First under 

 arm plate diamond shaped, twice as broad as long. Succeeding plates tri- 

 angular, about as long as broad, with a broadly rounded distal margin. 

 Basally the plates are in contact; distally they are separated by the side 

 arm plates. Two and sometimes 3 erect, flat, oval tentacle scales on the 

 first arm segment. Two broad, oval, flat tentacle scales on the next 5 to 8 

 arm segments, inner scale slightly the longest. Only one flat, oval, 

 appressed tentacle scale on the remaining arm segments. 



Color. — Dried specimen, disk granulations brown, disk spines pale 

 cream color. Arms light purple with a dark band every 2 to 5 segments. 

 Under arms and mouth parts are creamy white. A smaller dried specimen 

 had brown and white markings on the disk with white disk spines. Arms 

 show longitudinal purplish lines in addition to the bands. 

 Types. — Holotype, AHF no. 15; 34 paratypes. 



Type locality. — Station 529-36, 165 fms., off San Francisquito Bay, 

 Lower California, Mexico, March 1, 1936. There are 34 paratypes as 

 follows: 2 from Station 431-35, 45 fms., north of Octavia Bay, Colom- 

 bia, January 27, 1935; one from Station 534-36, 125 fms., off San Fran- 

 cisquito Bay, Lower California, Mexico, ALirch 2, 1936; one from Sta- 

 tion 780-38, 47 fms., Chatham Bay, Cocos Island, Costa Rica, January 

 14, 1938; 2, one in the Museum of Comparative Zoolog}^ from Station 

 795-38, 55 fms., Sulivan Bay, James Island, Galapagos, January 21, 

 1938; 5 from Station 948-39, 30-35 fms., outside Medidor Island, Bahia 

 Honda, Panama, March 28, 1939; 10 from Station 874-38, 45 fms., N.E. 

 of Anacapa Island, California, August 1, 1938; one from Station 909-39, 

 60-90 fms., 2 miles off Emerald Bay, Catalina Island, California, Janu- 

 ary 29, 1939; 3 from Station 750-37, 60 fms., Outer Gorda Banks, 

 Lower California, Mexico, April 4, 1937; 4 from Station 875-38, 50 

 fms., N.E. of Anacapa Island, California, August 1, 1938; 2 from Sta- 

 tion 900-38, 40 fms.. Long's Point, Catalina Island, California, Novem- 

 ber 18, 1938; 2 from Station 213-34, 7-10 fms., La Plata Island, Ecua- 

 dor, February 10, 1934; and one from Station 201-34, 25-35 fms., 

 Gardner Bay, Hood Island, Galapagos, January 31, 1934. 



Remarks. — These specimens have a habit of rupturing the upper sur- 

 face of the disk upon being brought to the surface. The paratypes from 



