174 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Chelura terebrans Philippi. 



1839. Chelura terebrans, Philippi, Arch. f. Naturgeschichte, 

 vol. 5, p. 120, pi. 3, fig. 5. 



1879. Chelura terebrans, S. I. Smith, Proc. U. S. Nat. Mus., 

 vol. 2, p. 232. 



1894. Chelura terebrans, G. O. Sars, Crust. Norway, vol. i, 

 p. 627, pi. 225. 



This species of wood-boring Amphipod is not widely dis- 

 tributed on the Atlantic coast of North America, having been 

 reported only from Woods Hole and Provincetown, Massachu- 

 setts. It occurs along the coast of Europe from Norway to the 

 Mediterranean and also at Bermuda. 



It is readily distinguished from all other crustaceans by the 

 structure of the uropods ; the first pair lie under the abdomen 

 and have a long peduncle and two short rarni.^ The second pair 

 have the dorsal edge of the peduncle expanded into a thin, broad, 

 oval plate projecting beyond the two small rami which are 

 attached in an emargination of the lower margin. The last pair 

 have very stout but short peduncles to each of which is attached 

 a single very long, strong ramus which is much longer in the 

 males than females. 



Length 6 mm. 



CAPRELLIDEA. 



Head fused with first thoracic segment, first gnathopods situ- 

 ated close to mouth parts; body slender and filiform; maxillipeds 

 with well developed palp, one to four-jointed; coxal plates want- 

 ing ; gills present usually only on two segments ; anterior pereio- 

 pods rudimentary or wanting; abdominal appendages lacking or 

 rudimentary. Hepato-pancreatic tubes, two ; rectal gland lacking ; 

 heart with three pairs of ostia. 



-ZEginella Boeck. 



Body slender, sometimes smooth, sometimes coarsely spinous. 



Antennae slender and elongated ; second antennae with short, 

 biarticulate flagellum. 



Mandibles with molar tubercles well marked and palps moder- 

 ately .developed and triarticulate. Maxillipeds with outer plates 

 strongly spinous on inner margin. 



