TROPICAL PACIFIC HOLOTHURIOIDEA. 141 



larger; the body, 220 mm., the tail 180 mm., and the width 50 mm. Mr. 

 Agassiz states that in life this specimen was 55 cm. long. The tip of the tail 

 is less distinctly notched than in the other specimen. The color is violet much 

 faded dorsaUy, where it is almost gray; the tentacles are brovvTi. 



Station 4658. Eastern Tropical Pacific, 8° 30' S., 85° 36' W., 2,370 fms. Bott. temp. 35.3°. Fne. gn. 



m., mang. nod. 

 Station 4721. Eastern Tropical Pacific, 8° 7' 30" S., 104° 10' 30" W., 2,084 fms. Bott. temp.? Lt. br. 



glob. oz. 



Two specimens. 



Benthodytes glutinosa. 

 Plate 2, fig. 1. 

 R. Permer, 1896. Compt. Rend., 123, p. 903. 



This species, originally described from the Atlantic, has since been recorded 

 from the Indian Ocean by Koehler and Vaney. The present specimen appears 

 to agree with these latter in the entire absence of spicules. Otherwise the agree- 

 ment with Perrier's later, fuller description and figures (1902, Travailleur et 

 Talisman HoL, p. 462; plate 1.3, fig. 5 and plate 20, fig. 31) is very close. The 

 differences between glutinosa and typica do not seem to be very weighty and it 

 is probable that the two are identical. 



Station 4647. Eastern Tropical Pacific, 4° 33' S., 87° 42' 30" W., 2,005 fms. Bott. temp. 35.5°. Lt. gy. 

 and br. glob. oz. 



One specimen. 



Benthodytes regtilaris,' sp. nov. 

 Plate 2, fig. 2. 



Length, 105 mm.; thickness about 15 mm., but when both margins are 

 spread fiat, the width is 22 mm. Seen from below the appearance is much 

 hke Theel's figure of B. sanguinolenta var. marginata (1886, Challenger 

 HoL, plate 25, fig. 2) but the upper surface is very different from that of mar- 

 ginata. On each dorsal ambulacrum is a series of fourteen or fifteen papillae 

 in a single row; these begin 25 mm. back of anterior end of body, are of nearly 

 uniform size and quite evenly spaced; each is about 2-2.5 mm. high by 1.5 mm. 

 in basal diameter; the form is bluntly conical. Alouth ventral but anus 

 dorsal. Anterior end quite flattened. Midventral line of pedicels distmct but 

 they are small and fully retracted; they are wanting on the anterior region for 

 a distance of 20 mm. or more. Tentacles not permitting an accurate coimt, 



' regxdaTis = according to rule, in reference to the regular arrangement of the dorsal papillae. 



