494 EEPOET OFTIOMMISSIONER OF FISH AXD FISHERIES. 



transverse dorsal baud of red or orauge on each segment, and similar 

 ones on the epimera, and were minutely specked with dark brown ; the 

 antenuPB and legs were annulated with white and light red or orange. 

 Another species of Podocerus was'still more abundant among the red 

 algoe ; in this the males and females differ greatly iu size, form, and color. 

 The females are much smaller and stouter than the males ; their colors 

 were generally red and white, in strong contrast,though some were pur- 

 plish and more like the males iu color ; most of the females have the 

 head and few anterior segments dark red ; then a band of white ; then 

 three or four bands of dark red, on the middle of the body, which are 

 often confluent into a large dorsal spot of red or brown ; these are fol- 

 lowed by a broad white band or spot ; the abdominal rings are alternately 

 banded with red and white; part of the epimera are red. The antenmie 

 and legs are more or less annulated and spotted with red. The eyes are 

 black. In the male the color is generally reddish or purplish brown, 

 but irregularly specked with darker brown, and with the intervals 

 between the segments pale red. 



Species of Caprella occur in considerable numbers, clinging, in gro- 

 tesque attitudes, upon the delicate algJE and hydroids. The Idotea 

 irroraia, (p. 316, Plate V, fig. 23,) is also very common, living among the 

 algie, aud JErichsonia filiformis (p. 310, Plate VI, fig. 2G,) is often associ- 

 ated with it. 



The Annelids living upon such bottoms are difficult to obtain, since 

 they mostly burrow beneath the stones or live in tubes attached to the 

 rocks. The few species obtained are, with few exceptions, not different 

 from those found iu the sounds, on similar bottoms. The Autolytns cor- 

 nuhis, (p. 397, Plate XIII, figs^G5, 60,) and another species of the same 

 genus were found in abundance, living iu tubes attached to the fronds 

 of Laminar ia among hydroids, {Obelia geniculata.) On the same fronds 

 were long, crooked tubes, formed of grains of sand and small bits of 

 shells, belonging to Nicolea simplex, (p. 397.) 



Burrowing in the corals of Astrangia Dance we found, on the reef off 

 Watch Hill, the singular Annelid named Xaraganseta coralii by Dr. Leidy, 

 who obtained his specimens at Point Judith. The specimens found by 

 us were mostly very dark greenish brown or black, but some had dark, 

 orange-colored brauchiaj. The Lcpidonotus angustus, Phyllodoce grdcilis, 

 P. caiemda, and Eumidla Americana are new and interesting species. 

 Isfereis fucata occurs rarely. 



Of Gastropods many species already enumerated as iuhabitauts of 

 the rocky shores occur also on the rocky bottoms in abundance, but there 

 are a number of additional species. One of the largest is the "whelk," 

 Buccinwn nndatian, (Plate XXI, fig. 121.) This is a decidedly northern 

 and arctic shell, found also on all the northern coasts of Europe, though 

 several authors believe that the American aud European shells are dis- 

 tinct species. 



One of the most interesting of the northern shells that occur here is 



