136 DEIMATIDAE. 
media because of a fairly close similarity in calcareous particles but whether 
the dorsal appendage and the pedicels are also similar, it is out of the question 
to determine. They certainly add nothing to our knowledge of the species. 
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. 
Station 4658. Eastern Tropical Pacific, 8° 30’ S., 85° 35’ 36’ W., 2,370 fms. Bott. temp. 35.3°. 
Fne. gn. m., mang. nod. 
Station 4672. Peru: southwest of Palominos Light House, 88 miles. 2,845 fms. Bott. temp. 35.2°. 
Fne. dk. br. infns. m. 
Ten specimens. 
Peniagone setosa. 
Peniagone vitrea var. setosa Lupwic, 1893. Bull. M. C. Z. 24, p. 109. 
Comparison of the present specimen with a cotype of Ludwig’s variety 
has satisfied me that the two are identical and that both are perfectly distinct 
from vitrea Théel. I therefore raise the variety to full specific rank. It is 
easily recognized by the abundance and large size of, the spicules, the curved 
arms of which are 300-530 y in length, with the outwardly directed spines, 300- 
470 uw. The ALBATROSS specimen is lighter and less gray than the cotype and 
the crest is much less evident. The length is rather more than 50 mm. 
Station 4658. Eastern Tropical Pacific, 8° 30’ S., 85° 35’ 36” W., 2,370 fms. Bott. temp. 35.3°. Fne. 
gn. m., mang. nod. 
One specimen. 
Peniagone vitrea. 
Tweet, 1881. CHALLENGER Hol., pt. 1, p. 50. 
Although the specimen at hand is badly rubbed and lacks its tentacles, and 
although the integument is not at all glassy or “hard, brittle and rough,” I 
feel little doubt about the identity, for the shape of the body, the arrangement 
of the pedicels and the calcareous particles agree well with Théel’s description. 
The color is yellowish white and the body-wall is quite opaque. The body 
posterior to crest is 50 mm. long, anterior to crest is 30 mm. and its width is 
25 mm. The crest is 25 mm. high and while its margin is irregular there are 
no definite four projections visible. There is a note with the specimen indicating 
that the color in life was “‘ pink.” 
Station 17. Eastern Tropical Pacific, 0° 50’ N., 137° 54’ W., 2,463 fms. Bott. temp.? Lt. yel.-gy. 
glob. oz. 
DEIMATIDAR. 
Oneirophanta mutabilis. 
Tuéet, 1879. Bih. K. Sven. Vet. Akad. Handl., 6, no. 19, p. 6. 
The present series confirms Théel’s statements concerning the diversity 
shown by this species. I doubt very much the validity of the species which 
