THE CRUSTACEA OF NEW JERSEY. 227 



ment twice length of fourth. Flagelkim of two subequal seg- 

 ments. Second antennae reach to hind edge of first thoracic 

 segment. Maxillipeds with a palp formed of three segments. 

 No palp to mandibles. Thoracic segments subequal, and no 

 epimera separated off on any of segments. Abdomen broad 

 as thorax, first two segments covered laterally by seventh thoracic 

 segment, and sixth or terminal segment broader than long, 

 tapering to truncate end. Uropoda not longer than terminal body 

 segment,' peduncle not visible as viewed dorsally, and broad 

 outer branch fills space between sixth abdominal segment and 

 lateral part of fifth segment, truncate at its posterior end. Inner 

 branch of uropoda narrow, elongate, not extending beyond end 

 of abdomen. Legs all ambulatory. Color varies from gray to 

 almost black. In some specimens back varied with pale blotches, 

 often arranged as three longitudinal series. Often between these 

 rows of pale spots group of pale streaks. Length 16 mm. 



Remarks. — The "pill bug" is of world-wide distribution, liv- 

 ing mostly in moist places, as under stones or logs, in crevices 

 or under rocks, about greenhouses, cellars, under boards, etc. 

 It has also been found on floating sea-weed. It is unfortunately 

 classed as injurious to the garden, destroying vegetables grown 

 in greenhouses. It is also said to injure various plants, and be 

 one of the most destructive pests with which the mushroom 

 grower is forced to contend. My examples from South Dennis 

 and Dias Creek, in Cape May county. In Pennsylvania I have 

 found it about Philadelphia, as at Holmesburg, Bustleton, Tor- 

 resdale and Bristol. Mr. W. T. Davis found it at Lakehurst and 

 Staten Island. 



Family ONISCID/E. 



The Wood Lice. 



Body oval or oblong, with lateral parts of seginents more or 

 less expanded. Metasome with two anterior segments rather 

 small, and with epimeral plates concealed. Last segment much 

 narrower than preceding ones, conically produced at end. Eyes 

 compound, generally well developed. Antennul?e very small, 



