116 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.10 



Color (preserved) is pale, translucent. Branchiae are usually present 

 from the third (though sometimes not until the seventh) setiger, and are 

 continued nearly to the end. The number of branchial filaments increases 

 to about 10 or 11 between the twelfth and twentieth segments, decreases 

 to 2 filaments at about the thirtieth, but in the posterior fourth of the 

 body the number of branches again increases. 



The prostomium is clearly bifid anteriorly, has 2 large, dark eyes ; its 

 antennae are distinctly moniliform, the articles short, number approxi- 

 mately (from left to right) 7- 15- 17- 15- 7; the basal article is more 

 or less cylindrical, the others subspherical. Peristomial cirri are short, 

 cirriform. Dorsal cirri are smooth or only vaguely articulate. 



The maxillary formula is about as follows: maxilla I (forceps) has 

 a single tooth on either side, maxilla II has 5 and 7 teeth, maxilla III 

 has 6 teeth left, none right, maxilla IV has 8 and 10 teeth; there is, how- 

 ever, some variation in maxillae III and IV, even among individuals 

 from the same collection. Acicula are pale, distally usually expanded, 

 hammer shaped (pi. 7, fig. 154) ; subacicular hooks are also pale, distally 

 clearly tridentate (pi. 7, fig. 155) ; composite hooks are distally biden- 

 tate (pi. 7, fig. 156). 



Color in life was noted on individuals from Chacahua Lagoon, Mexi- 

 co (coll. 928-39), and Coche Island, Venezuela. In the first the pro- 

 stomial antennae are lime green, the prostomium dull, the ring between 

 prostomium and peristomium scarlet. Peristomial cirri are white. The 

 dorsum of anterior segments is marked with a dark lavender triangular 

 spot at the median line; dorsal cirri are white, branchiae are vermilion. 

 The dorsum is neutral red, becomes gradually pale farther back, and al- 

 most fades out at the tail end. The ventrum has a ground color similar 

 to that of the dorsum, dull bluish iridescent. Another specimen, from 

 Coche Island, Venezuela (A 32-30), has a different pattern; it is a 

 gravid female. In this the prostomial antennae are cream color ; branchiae 

 are scarlet. The dorsum is red orange, gradually becomes dark gray with 

 a purple hue about halfway to the end. The ventrum is purplish lilac 

 and iridescent. (Noted by Mr. Anker Petersen.) 



Leodice enteles Chamberlin (1918, p. 175) from Pacific Grove, Cali- 

 fornia, is believed to be the same. It was recorded as 110 mm long for 

 127-140 segments; branchiae first present from the sixth (or seventh) 

 setiger, with a maximum of 4 or 5 filaments, decrease to 2 filaments by 

 the thirty-second segment, but are continued posteriorly nearly to the 

 end. The setal and acicular structures were not described. The pro- 

 stomial antennae were said to be strongly moniliform. 



