HAUSTORIIDAE OF NEW ENGLAND — BOUSFIELD 167 



Type genus. — Pontoporeia Ki'0yer 1842. 



Component genera. — Pontoporeia Kr0yer 1842, Amphiporeia 

 Shoemaker 1929, Bathyporeia Lindstrom 1855, Priscillina Stebbing 

 1888, Haustoriopsis Schellenberg 1938, Urothoe Dana 1852(?). 



Remarks. — A separate subfamily may be requii-ed for Urothoe, its 

 deep-sea generic complex, and Carangolia Barnard 1961. These 

 genera show many featm*es in common with the PhoxocephaUdae in- 

 cluding the strongly subchelate and similar gnathopods, large acces- 

 sory flagellum, equally biramous third uropods, dactylate peraeopods, 

 and slender female brood plates. The mouthparts, with weak man- 

 dibular palp, small maxillae, slender maxiUiped palp, and broad lower 

 hp, suggest a carnivorous or large-particulate feeding function, rather 

 than the filter-feeding mechanism of typical Haustoriidae. 



Haustoriinae, new subfamily 



Head and body segments broadly arched, tumid or cylindrical; 

 rostrum usually strong, antennal sinus deep; eyes small, weakly pig- 

 mented, or lacking. Peraeon segments produced laterally in short 

 lobes to which limbs are attached; pleon abruptly narrowing beyond 

 peraeon, posterior margui often overhanging urosome. Urosome seg- 

 ments variously reduced, segments short, narrow, dorsally smooth; 

 urosome 1 with posteroventral lappet. Antennal peduncular seg- 

 ments short, broad, margins thickly setose or plumose; antenna 1: 

 flagellum short, usually -with elongage calceolae; antennae 2: pedun- 

 cular segments 4 (occasionally 5), lobate behind, flagellum short, 

 noncalceolate in either sex. 



Mouthparts variously modified. Lower Up: inner lobes large, 

 elongate; outer lips laterally rounded. Mandibular palp and molar 

 strong, incisor and lacinia weak, occasionally lacking. Alaxilla 1 

 typically with lateral coxal baler lobe. Maxilla 2: outer plate often 

 large, broad, strongly plumose. Maxilliped palp broad, 3-segmented. 

 Gnathopod 1 simple. Gnathopod 2 minutely chelate, otherwise 

 similar to gnathopod 1. Coxal plates 1-4 deep, posterior angle acute. 

 Peraeopods without dactyls. Peraeopods 1 and 2 powerfully fossorial, 

 usually similar. Peraeopods 3-5: segments 4 and 5 broadly expanded, 

 margins richly spinose and/or plumose. Pleopods strong, peduncles 

 short and broad, outer ramus longer. Uropod 1 strong, spinose, usu- 

 ally unequally biramous, occasionally uniramous. Uropod 2 much 

 smaller and unlike uropod 1, thickly setose, occasionally uniramous. 

 Uropod 3 short, rami subequal, setose at apices. Telson entire, var- 

 iously cleft, or bilobed. Sexes similar, male smaller. Female brood 

 plates small or vestigial on peraeon 3. 



