GULF OF MEXICO 



317 



56. Desmoscolex nudus Chit wood, 1051 (fig. 04, D). Lo- 



cality: Rockport, Tex. 



57. Eudesinoscolej luteocola Cliitwood, 1951. Locality: 



Rockport, Tex. 



58. Tricoma major Cobb, 1912. Locality: Jamaica. 



59. Tricoma spinosoides C\\\i\\'ood, 1951. Locality: -Aran- 



sas Bay, Tex. 

 (iO. Tricoma fiiipjevi Chitwood, 1951. Locality: Araiusas 

 Bay, Tex. 



61. Tricoma spinosa Chitwood, 1936. Locality: Aransas 



Bay, Tex. Reported by: Chitwood, 1951. Other 

 localities: Bogue Sound, N. C. 



Family GREEFFIELLIDAE (Fillpjev 1929) 



Cuticle not coarsely annulate, usually hirsute. 



62. Greeffiella dasyura Cobb, 1922. Locality: Biscayne 



Bay, Fla. 



Suborder Monhysterina 



Esophago-intestinal valve dorsoventrally flattened, 

 never vertically flattened, usually elongate; stoma, if 

 well-developed, unarmed or without prominent teeth, 

 surrounded or not by esophageal tissue; stomatal rugae 

 absent; papilloid or tuboid supplements, may be minute 

 depressions; outstretched or reflexed ovaries. Marine or 

 fresh water. 



Superfamily PLECTOIDEA Chitwood, 1937 



Amphids 1-2 spiral or almost circular; punctation, if 

 present, weak; ends of esophageal radii tuboid; reflexed 

 ovaries. 



Family LEPTOLAIMIDAE Oerley, 1880 



Esophageal bulbar region muscular but without valve; 

 stoma narrow, cylindrical, or presumably absent; cuticle 

 somewhat coarsely striated. Mostly marine. 



63. Leptolaiinus plectoides Chitwood, 1951. Locality: 



Aransas Bay, Tex. 



Subfamily Rhabdolaiminae Chitwood, 1951 



Ampids pore-like, minute; stoma cylindrical, very 

 narrow. Marine or fresh water. 



64. Syringolaimus smarigdus Cobb, 1928 (fig. 65, A). 



Locality: Rockport, Tex. Reported by: Chitwood, 

 1951. Other localities: Woods Hole, Mass. 



Family CAMACOLAIMIDAE Stekhoven and de 

 Coninck, 1933 



Amphids basically unispiral; terminal excretory duct 

 never sclerotized; stoma tiny or absent, often armed with 

 dorsal tooth; four cephalic setae; posterior region of 

 esophagus glandular. 



Subfamily Camacolaiminae Micoletzky, 1924 



Amphids anterior to cephalic setae. Marine. 



65. Neurella simplex Cobb, 1920. Locality: Kev West, 



Fla. 



66. Onchium ocellatum Cobb, 1920. Localities: Mass. 



and Key West, Fla. 



67. Onchulella ocellata Cobb, 1920. Locality: Biscayne 



Bay, Fla. 



68. Ne.mella ocellata Cobb, 1920. Locality: Biscayne 



Bay, Fla. 



69. CamacolaimuH tardus de Man, 1889. Locality: 



Aransas Bay, Tex. Reported by: Chitwood, 1951. 

 Other localities: Coasts of Holland. 



70. Digiionc.hus cylindricaudalus Chitwood, 1951. Lo- 



cality: Rockport, Tex. 



Subfamily Aphanolaiminae Chitwood, 1935 



Amphids posterior to cephalic setae. Fresh water or 

 marine. 



71. Alaimella cincta Cobb, 1920 (tig. 65, B). Localities: 



Biscayne Bay, Fla., and Aransas Bay, Tex. 



Superfamily AXONOLAIMOIDEA Chitwood, 1937 



Amphids spiral or variants, rarely circular; cuticle not 

 punctate; stoma, if well-developed, cylindroid to conoid; 

 teeth, if present, as three or six eversible prorhabdions ; 

 esophagus three part without valve to clavate; ends of 

 esophageal radii tuboid; outstretched ovaries (reflexed 

 in a few comesomes). Mostly marine. 



Family AXONOLAIMIDAE Stekhoven and de 

 Coninck, 1933 



Amphids unispiral to shepherd's crook, seldom a broken 

 circle; cuticle usually smooth, punctation absent or minute; 

 supplements papilloid or absent; gubernaculum usually 

 with posterior apophyses; outstretched ovaries. 



Subfamily Axonolaiminae Micoletzky, 1924 



Amphids unispiral, circular to shepherd's crook; stoma 

 conoid with well-developed rhabdions. Marine. 



72. Odontophora angustilaimoides Chitwood, 1951 (flg. 65, 



E, F). Locality: Aransas Bay, Tex. 



Subfamily Diplopeltinae Rauther, 1930 



Amphids unispiral, on a sclerotized plaque; stoma 

 weak, walls not sclerotized. 



73. Didelta maculata Cobb, 1920. Locality: Key West, 



Fla. 



74. Araeolaimus punctalus (Cobb, 1920) Chitwood, 1951. 



Localities: Key West and Biscayne Bay, Fla. 

 Reported by: Cobb, 1920. 



75. Araeolaimus texianus Chitwood, 1951 (fig. 65, M). 



Locality: Rockport Harbor, Tex. 



76. Pseudaraeolaimus perpleius Chitwood, 1951 (fig. 65, LI. 



Locality: Aransas Bay, Tex. 



Family COMESOMATIDAE Stekhoven and de 

 Coninck, 1933 



Amphids multispiral; cuticle often puctate; stoma 

 cylindroid with three sclerotized points at anterior or 

 reduced; supplements papilloid or absent; gubernaculum 

 with or without posterior apophyses; ovaries usually 

 outstretched. Marine. 



77. Mesonchium poriferum Cobb, 1920. Locality: Key 



West, Fla. 



78. Pepsonema pellucidiim Cobb, 1920. Locality: Kings- 



ton Harbor, Jamaica. 



79. Laimella longicauda Cobb, \920. Localities: Biscayne 



Bay and Key West, Fla. 



80. Cj/njtm unt/ormis Cobb, 1920. Locality: Miami, Fla. 



