158 NEW YORK STATE MUSEUM 



the preceding, with basal joint large and produced behind into a 

 ciliated lobe. 



A burrowing family, only a single species of which has been 

 taken, though others probably occur. 



Ampelisca macrocephala Lillg. 



A m p e 1 i s c a macrocephala Lillgeborg. Ofvers. af Kongl. Vet. 

 Akad. Forh. 1852. p.;. Sars. /. c. 1895. p. 172, pl.6o, fig.i. 



Head as long as the first three thoracic segments. Eyes four, 

 small, red and at anterior end of head. Lower posterior angle of 

 the third abdominal segment produced. Basal segment of third 

 pereiopoda nearly transverse below, the carpus not produced 

 anteriorly. 



Fig. 26 Ampelisca macrocephala 



It is a burrowing form, living in smoothly lined tubes, which it 

 constructs in the mud, and in the bottom of which it may generally 

 be found. Length 10-15 mm. Color hyaline white. 



Found in the sandy mud flats of Jamaica bay. 



Calliopius laeviusculus (Kr.) 



Amphithoe laeviusculus Kr^yer. Gr<mlands Amphipoder. Danske 

 Vid-Selsk. Afhandl. 7:281, pl.3, fig. 13. 



Calliopius laeviusculus Verrill. /. c. 1874. p. 557. Sars. /. c. 

 1895. p.449, pl.158. 



Antennulae and antennae subequal, the former without an acces- 

 sory flagellum but with last peduncular segment produced into a 

 lappet with caceolae. Flagellum of both pairs with many well 

 marked articulations, which give it a serrate appearance. Gnatho- 



