l^R.'..] TROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 89 



length. The actinostome is more transverse than in Mr. Agassiz's fig- 

 ures of this species. 



Further details cannot be safely stated without a comparison of speci- 

 mens. 



Linopneustes longispinus, A. Agassiz. 



Bull.Mus. Comp. Zool., Cambriflge, vol.viii, No. 2, p. 82, 1880. 



One large specimen in fine condition was dredged at station 2157; 

 latitude 23° 10' 04" N., longitude 82° 21' 07" W., 29 fathoms (8128). 



Brissopsis lyrifera, L. Agassiz. 



One specimen of medium size was dredged at station 2145; latitude 

 90 27' K, longitude 79° 54' W.; 25 fathoms (7117). 



Aceste bellidifera, Wy v. Thoni. 



The Voyage of the Challenger, Atlantic, vol. 1, p. 376 (Eng. ed. ), 1877. A. Agas- 

 siz, Eeport on the Scientific Results of the Voyage of II. M. S. Chal- 

 lenger, Zoology, vol. iii, part ix, p. 195, 1881. Verrill, Am. Journ. Sci., ■vol. 

 xxviii,p. 382, 1884. 



Two specimens of this species were dredged at station 2117; latitude 

 150 24' 40" N., longitude 03° 31' 30" W., 683 fathoms (7115); and one 

 very small specimen, doubtfully referred to this species, was obtained at 

 station 2150; latitude 13° 34' 45" N., longitude 81° 21' 10" W., 382 fath- 

 oms (8399). The specimens from station 2117 are very unequal in size, 

 one measuring about 26'""' in length, and the other about 10'"'". The pre- 

 vailing color of the smaller specimen is a very light-purplish gray, while 

 the perii^etalous faciole is colored dark i)urple, and forms on the dorsal 

 surface a distinct pentagonal figure, broken at the anterior end. In 

 the larger specimen this fasciole is not colored differently from the re- 

 mainder of the test, which is of about the same shade as in the smaller 

 specimen, though there are some undefined darker markings on the dor- 

 sal surface near the posterior end. Tlfe specimen from station 2150 is 

 only about 5"'" in length, and differs considerably from the larger speci- 

 mens. It may possibly be the young of some other species. 



This species was obtained by H. M. S. Challenger, in the Atlantic 

 Ucean, only in the vicinity of the Canaries, and in latitude 35° 39' 8. 

 It was not collected at all by the Coast Survey steamer Blake in its 

 explorations of the Gulf of Mexico and Caribbean Sea. It has, how- 

 ever, been dredged by the steamer Albatross off the eastern coast of 

 the United States, at a depth of 1,467 fathoms (Verrill, loc. cit.). 



Agassizia excentrica, A. Agassiz. 



A single living specimen, measuring about 10""" in longitudinal diam- 

 eter, was obtained at station 2159 ; latitude 23° 10' 39" K,, longitude 

 82° 20' 08" W., 98 fathoms (8400). 



