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1923] NATURAL SCIENCES OF PHILADELPHIA 219 



Ammotrypane aulogaster Rat tike. 



Several specimens measuring from 25 to 44 mm. long with forty- 

 eight to fifty-two segments agreeing in all respects with A . aulogaster 

 of European waters. Most of them have the ventral caudal cirri 

 shorter than usually figured; on one they are three-fourths the 

 length of the spoon -shaped appendage. 



Stations 4306, off Point Loma Lighthouse, 207-497 fathoms, 

 green mud and fine sand; 4307, same locality, 169-496 fathoms, 

 gray mud and fine sand; 4364, same locality, 101-129 fathoms, 

 green mud and gray sand; 4367, same locality, 201-215 fathoms, 

 green mud; 4382, off N. Coronado Island, 642-666 fathoms, 

 green mud; 4387, same locality, 85 fathoms, gray sand; 4453, off 

 Point Pinos Lighthouse, 49-51 fathoms, dark-green mud; 4475, 

 same locality, 85-142 fathoms, soft green mud; 4524, same locality, 

 213-228 fathoms, soft gray mud. 



Travisia granulata sp. nov. 



Five specimens vary in length from 30-52 mm. and in diameter 

 from 3 to 7 mm. Diameter very uniform throughout most of 

 length, tapering at ends only. Segments 32 to nearly 50. 



Prostomium and rather prominent blunt cone clearly distin- 

 guished from the uniannular peristomium which is marked by a 

 deep groove at the parapodial level on each side, ventral to which 

 it is continued as a narrow, grooved, median area, which cuts through 

 somite II to the mouth. Somite II is setigerous and conspicuously 

 divided into two rings and by several longitudinal grooves into 

 smaller areas especially conspicuous at the sides. Somites III to 

 XX are triannulate, the middle or setigerous annulus being dis- 

 tinctly larger than the 1st and 3rd. The more anterior segments 

 are divided into areas by several longitudinal furrows. At XXI, 

 the first ring disappears and the anterior is three or four times as 

 long as the posterior. Caudally, these biannulate somites gradually 

 change to the simple uniannulate somites, the number of which 

 varies in different specimens and which gradually diminish in 

 size to the pygidium. 



Pygidium a small cylindrical ring, divided into thirteen rather 

 irregular, marginal ])a])ilhe, usually alternatelj^ larger and smaller. 



A conspicuous characteristic of this species is the large size and 

 abundance of tlie surface pustules which are so crowded over most 

 parts of the body as to give an aspect of close granulation. They 

 are largest on the anterior segments and elsewhere in the neigh- 

 })orhood of the parapodia and along the caudal border of each 

 annulus which forms a faintly lobulated fold embracing the suc- 

 ceeding ring. The lateral sense organs, which are so cons]iicuous 



