ANNELIDS. I. 



45 



mal part, a fact winch gives them a certain rigidity, in the Indian form they arc capillary from tin- 

 very beginning. 



I suggest that the form described by v. Marenzeller under the name of Nectochata Grimaldi 



must belong to the genus Drieschia. 



hike the form described 1>\ Moore the species in 

 mention has a slender shape and the segments are 

 relatively longer than is usually the case in the 

 Polynoids. The largest individual measures 12 mm. 

 111 length, and the body has a width of c. 2 mm., 

 parapods not included. Parapods and bristles included 



the width makes more than t; mm. The body consists 

 fig. 20. 



of 30 segments, save the cephalic lobe and the anal 

 segment. In the middle of the body the length of the segments is about one millimeter, but the sub- 

 division of these which is described and figured by Moore in relation to the form from Woods Hole 

 is not seen in any of the individuals at my disposal. 



The cephalic lobe (PI. Ill, fig. 2) behaves as in the genus of Lepidonotus; the length and 

 breath is about the same; at the base it is somewhat constricted. The eyes are of medium size, 

 not verv prominent. The unpaired antenna is long, rather thick at the base, and tapers gradually 

 towards the tip. The paired antennae are but half the length of the former and somewhat more 

 slender. The palps are thick and rather long, of usual form; near the apex they taper quickly, 

 and end with a short terminal filament. The tentacular cirri are long, nearly of 

 the same length as the unpaired antenna. 



The parapod (fig. 20) is long and rather low; and the notopodial branch is 

 rudimental; the latter is provided with an acicle, but this is feeble and much more 

 slender than the corresponding one in the netiropodial branch, and quite short. Some 

 peculiar bodies are found imbedded in the cutis of the distal half of the foot; they 

 are rounded, hut not very regular of shape, some of them are oval or ovoid, some 1 1' 

 reniform and somewhat varying in size. They prove to be chromophil in a high 

 degree when stained with Safrauine; while the remaining tissue of the parapod 

 assumes the well known wine-red colour the bodies in mention show strongly 

 yellow-red. Probablv it is a question of a sort of sense-organs attendant on the 

 pelagic behaviour of the animal. 



About the scales nothing can be said; they are all lost. The dorsal cirri 

 are long, rather thick, and taper gradually towards the tip; the longest among 

 them measures c. 4 mm. 



The setae are present essentially in two different forms, one relatively short 

 and thick and the other thin and capillary. They are arranged flabellately in the 

 foot, and the short and thick are most ventrally situated. These, relatively strong, are provided with 

 a short end-blade (fig. 21 <i). This end-blade is broadest at the base and tapers graduallv towards the 



fig. 21. 



