THE CRUSTACEA OF NEW JERSEY. 145 



positions on pedicels of third, fourth and fifth cirri. These three 

 latter filaments shorter and smaller than first three. At base of 

 second cirrus, which has no proper filament, a swelling. Mandi- 

 bles with basal edges of five teeth pectinated by minute short, 

 strong spines in one side, lower angle extremely short. Some- 

 times minute pectinated tooth between first and second, again 

 second tooth bifid on summit, or still others with fourth rudi- 

 mentary. Maxillae with five steps, sometimes each step begins 

 with spine rather larger than others, and at upper angle two 

 large unequal non-pectinated spines, with longer thinner third 

 placed a little below. Outer maxillae simple. Cirri with twice 

 as many segments in sixth cirrus as in first. Spines in first and 

 second cirri doubly serrated. 



Color of capitulum and peduncle gray, tinged blue, and six 

 black bands, tinged purplish-brown. Two bands near carina be- 

 come confluent on peduncles and sometimes disappear. Carina 

 edged, and interspace between two scuta, colored same dark tint. 

 Whole body and pedicels of cirri dark lead-color, with segments 

 of cirri almost black. Ova white, turning pinkish and then yellow 

 in spirits. Dark bands on capitulum and peduncle become purple 

 or fade, when gray tint disappears. Length of capitulum one 

 inch, and width three-fourths. (Darwin.) 



Re'niarks. — World-wide in the sea. and very common on the 

 bottoms of ships. It is found atteached to sea weeds, large sea 

 turtles, large fishes and parasitic copepods on the same, besides 

 other objects. Besides occurring alone, it is often found asso- 

 ciated, according to Darwin, with Conchoderma aurita, Lepas 

 anatifera, Lcpas Jiillii and Lcpas aiiscrifcra. 



Known from New Jersey by Leidy's record. He secured a 

 bunch of seven from a sing-le lernean (Pemiclla filosa) found on 

 a large sunfish (Mola niola) at Beach Haven. His examples 

 were mostly two inches long. Pilsbry records an example from 

 between Nantucket and Cape Charles on Ncptunus sayi. I have 

 already noted an example on PcnncUa filosa, itself taken on Mola 

 mola (see p. 90). Specimens are in the Academy, labeled New 

 York Harbor. 



10 MU 



