FLABELLIFERA • SEROLIDAE 201 



dian tubercles supported by strong carinae on the pleotelson; Forma B, hav- 

 ing a triangular depressed area dorsally on pleonite 5 and an obscurely cari- 

 nate pair of tubercles on the pleotelson. Given that at least two of these forms 

 have been recorded occurring together, it would seem that this is merely a 

 highly variable species. 



Phycolimnoria Menzies, 1957 



DIAGNOSIS Mandibular incisor lacking rasp and file. Uropodal rami une- 

 qual, exopod longer than endopod, latter usually with clawlike apex. 



REMARKS Most species oi Phycolimnoria are algal borers, frequently encoun- 

 tered in the holdfasts of brown algae such as Macrocystis, Laminaria, and 

 Sargassum. The one species recorded from the Caribbean, P. clarkae, however, 

 has only been taken from decaying wood. 



Phycolimnoria clarkae Kensley and Schotte, 1987 

 Figure 88E,F 



DIAGNOSIS S 4.3 mm, ovigerous 9 3.3-4.4 mm. Uropodal exopod less 

 than half length of endopod, straight, tipped with short squat claw. Pleonite 

 5 with broad raised middorsal region having irregular bumps. Pleotelson 

 wider than long, with two rounded submedian ridges basally, becoming ob- 

 solete posteriorly. 



RECORDS Bahamas; Twin Cays, Belize. 

 Aldabra Atoll, Indian Ocean. 



Family Serolidae Dana, 1852 



DIAGNOSIS Body dorsoventrally depressed. Eyes present or absent. 

 Cephalon fused with pereonite 1 dorsally. Mandible bearing palp. Maxillipe- 

 dal palp of one to four articles. Pereonites 2-4 with coxae demarked; per- 

 eonites 5 and 6 with coxae not demarked; pereonite 7 narrow, lacking free 

 lateral margins. Pereopod 1 in S and 9 subchelate, pereopod 2 subchelate or 

 ambulatory in 6, ambulatory in 9. Pleonites 1 and 2 free, articulated, re- 

 mainder of pleonites fused with telson. Pleopods 1-3 small, natatory; 

 pleopods 4 and 5 large, operculate. Uropods lateral, biramous. 



REMARKS The serolids reach their greatest diversity (and their greatest size 

 of up to 80 mm in length) in the southern oceans, with few species extending 



