NO. 5 HARTMAN : POLYCHAETOUS ANNELIDS 505 



nae and tentacular cirri. It resembles A. rigida Fauvel but differs from 

 the latter in that the posterior yellow acicular spines are distally curved 

 instead of nearly straight and the anal processes consist of a pair of long, 

 slender structures. 



Another collection, containing a single posterior fragment, originates 

 off Lower California, Latitude 26° 14'N, Longitude 113° 13'W, in 48 

 fms and was collected by the U.S.S. Albatross on May 3, 1888. This 

 belongs to the group in which prostomial and peristomial structures are 

 long and tentacular. 



Both of these collections are too meager to permit specific identifica- 

 tion. They are here mentioned since they represent interesting records 

 from parts of the world in which the genus has remained unknown. 



Genus LOANDALIA Monro, 1936, emended 

 Type L. aberrans Monro 



The body is cylindrical to somewhat depressed ; the anterior region 

 through the first few segments is somewhat inflated. Its surface through 

 the inflated region is somewhat areolated but farther back it is smooth. 

 The prostomium is small and inconspicuous; it is provided with a pair 

 of reduced, biarticulated palpi in which the palpophore greatly exceeds 

 the small, papillar palpostyle. The peristomium is a simple, achaetous 

 and apodous ring lacking appendages. The proboscis is cylindrical when 

 everted ; its walls are muscular ; its distal end terminates in a slit that is 

 vertical and a few terminal papillae which are disposed in an inner and 

 an outer row, at least in one species. The proximal surface of the pro- 

 boscis is smooth. 



Parapodia through the first one to 5 segments are uniramous, repre- 

 sented only by a neuropodium which may resemble a more posterior noto- 

 podium; farther back the parapodia are biramous. Dorsal cirri are 

 absent throughout. Ventral cirri are present only as a small prolonga- 

 tion of the distal end of the neuropodium along its ventral edge (pi. 63, 

 fig. 3). Notopodial structures include a long, projecting aciculum in 

 each ramus and a few slender, hairlike setae. Neuropodial structures 

 include a similar though stronger aciculum and transverse rows of simple, 

 geniculate, distally pointed setae that are provided with transverse rows 

 of teeth. The posterior end terminates in an anal plaque, ventral to the 

 anal aperture. 



