THE CRUSTACEA OF NiEW JERSEY. 275 



nient minute. First antennae reach to end of fourth segment of 

 second antennae. Latter with first segment large, second seg- 

 ment not long as first, third and fourth subequal segments each 

 about long as first, and fifth segment about long as fourth. 

 Flagellum formed of two or three indistinctly defined segments. 

 Maxillipeds with palp of five segments. Mandible palp of three 

 segments. First thoracic segment longer than any following by 

 almost twice their length, and latter subequal. Except first, 

 epimera distinctly separated on all segments. Abdomen formed 

 of six distinct segments, of which first five short and subequal, 

 and sixth or terminal segment with hind edge widely rounded. 

 Uropoda situated laterally, outer branch small and rudimentary 

 and inner branch reaches end of abdomen. All legs ambulatory. 

 Color light gray. Length 4.5 mm. 



Remarks. — This species is well known on account of its de- 

 structiveness to submerged timber. It has a wide distribution 

 from Florida to Nova Scotia, Europe, and in the Pacific Ocean. 

 Harger says much has been written upon its destructive habits 

 and the means of preventing its attacks on woodwork, for which 

 the reader may consult especially the publications of Leach, 

 Coldstream, Hope, Thompson, Moore, Gould, Bate and West- 

 wood, Verrill, and Andrews, who has observed it attacking the 

 gutta percha of submarine telegraph cables. It lives above low- 

 water mark, though usually not far below, having been taken in 

 at least ten fathoms. In New Jersey it is recorded from Great 

 Egg Harbor and Absecon. 



Family CYMOTHOID^. 



Antennae greatly reduced, without clear distinction between 

 peduncle and flagellum. Mandibles with palps. Maxillipeds 

 with palp formed of two joints, and terminal joint with hooks. 

 First maxillae with masticatory lobe formed of single tapering 

 joint, provided with four spines at tip. Second maxillae bilobed 

 at tips, and furnished with numerous spines. Epimera distinct 

 on all segments, except first. All seven pairs of legs prehensile, 

 ending in strong hooked fingers. Pleopods not ciliated. Ter- 



