COBB: A KEY TO THE GENERA OF FREE-LIVING NEMAS 453 



GLOSSARY 



adhesion tubes, hollow tube-like setae by means of which some nemas "walk" along a surface 



ambulatory setae, setae, sometimes hollow and tube-like, by means of which some nemas "walk" along a surface 



amphid, a paired lateral sense organ the opening of which is often conspicuous, near the anterior end 



amphidial opening, the pore (or larger aperture) through the cuticle at which amphid opens exteriorly 



amphidial pocket, a chamber, outline often cup-shaped, sometimes present just behind external amphid 



ampulla, widening in canal, forming a reservoir 



annulated, haying annules 



annules, definite transverse rings of the cuticle 



apophysate, having an apophysis 



appendicule, a large single ventral pre-anal supplementary organ which is extensible 



bursa, flap-like extensions of the lateral cuticle of the tail end of the male 



calvarium, subcuticular cephalic framework 



cardiac bulb, swelling of oesophageal wall, glandular or muscular, just anterior to beginning of intestine 



cardiac valve, thickening or complication of oesophageal lining in cardiac bulb, functioning as a valve 



caudal glands, 3 cells in or near tail, emptying by separate ducts into a common ampulla at spinneret 



cephalated, having the head or anterior end set off in some way 



cephalic setae, setae of the second or "outer" circlet around the mouth 



cephaloboid, resembling (that of) the genus Cephalobus 



cervical, on the neck 



chromadoroid, resembling (that of) the genus Chromadora 



cirri, elaborate cephalic appendages in front of the cephalic setae 



cuirasse, a helmet-like appearance of cuticle of bead 



cyatholaimoid, resembling (that of) the genus Cyatholaimus 



demanian system, gonenteric system of vessels connecting intestine and uteri with each other, and posteriorly 



with the exterior 

 dentate, bearing teeth 



denticles, minute teeth or "prickles," usually numerous 

 denticulate, bearing denticles 



diplogastroid, resembling (that of) the genus Diplogaster 

 dorylaimoid, resembling (that of) the genus Dorylaimus 



enchelid, male form such as has been classified in the genus Enchelidium, male of Symplocostoma group 

 eurystomoid, resembling (that of) the genus Eurystomina 

 excretory duct, canal leading from renette to ampulla near excretory pore 



excretory pore, opening through cuticle (usually cervical or cephalic), at which the renette empties 

 external amphid, the cuticular manifestation of the amphid 

 glottoid apparatus, valvular structure at base of pharynx 



gubernaculum, grooved cuticularized piece, sometimes paired, through which the spicula slide 

 head, portion of nema anterior to base of mouth cavity 



jaws, cuticular framework around the mouth, for grasping and holding; fundamentally 3-parted 

 labial setae, setae of the ' 'inner' ' circlet, on the lips or close to the mouth 



male supplements, male organs, usually pre- or post-anal, usually a single ventral row, or paired, subventral 

 mandibles, hard, strong, biting or grasping organs around the mouth 

 mandibular, of the mandibles, resembling mandibles 



median bulb, swelling of the oesophageal wall at or near the middle of its^length 

 monospiral, spiral of one wind or not much more 

 monospire, spiral, or a spiral, of one wind or not much more 

 mucron, a knob-like ending, shaped like that on the end of a lemon 

 multispiral, spiral of two or more winds 

 multispire, spiral, or a spiral, of two or more winds 

 neck, portion of nema anterior to base of oesophagus 

 odontium (odontia), labial tooth (teeth) 



oesophagus, portion of alimentary tract between pharynx and intestine, sometimes surrounding pharynx 

 onchium (onchia), pharyngeal tooth (teeth) 



"palps," special labial appendages, apparently for touching, grasping, or getting material to mouth 

 percent, percent of body length, or distant from anterior end measured in percent of body length 

 pharyngeal bulb, muscular swelling of the oesophageal wall around the pharynx 

 pharynx, the mouth cavity and its walls 

 phasmids, a pair of cuticular pores on the tail 

 plectoid, resembling (that of) the genus Plectus 

 posterior bulb, cardiac bulb, q.v. 



probolae, prominent and elaborate specialized appendages encircling the mouth 

 pseudonchs, structures in pharynx which from some points of view resemble onchia 

 renette, a cell or group of cells emptying through the excretory duct(s) 

 rhabditoid, resembling (that of) the genus Rhabditis 



sensory papilla, a structure in the amphidial area in which apparently nerves terminate 

 setae, hair-like structures on the cuticle 



sole, the region of attachment of the special ambulatory setae or adhesion tubes 

 somatic setae, setae general on the surface of the body (opposed to cephalic, caudal, etc. setae) 

 spear, a long, rather slender oncbium, in adult usually axial 



spicula, male intromittent organs, often paired each an elongate cuticularized framework, extrusible through anus 

 spinneret, outlet, usually terminal, of the caudal glands, enabling nema to attach itself 

 striae, fine transverse lines in the cuticle 

 striate(d), showing striae 

 stylet, a long slender spear 



subcephalic setae, setae on the head but behind the cephalic circlet 

 supplementary organs, see male supplements 



tooth, element of buccal armature, onchium, odontium, spear etc. 

 tylenchoid, resembling (that of) the genus Tylenchus 



uvette, rosette or group of cells between uterine afferent duct and efferent duct of demanian system 

 vestibule, entrance to the mouth cavity, sometimes a distinct chamber 

 wings, longitudinal structures in cuticle, or projecting from it, usually lateral, but sometimes numerous and 



evenly spaced around the nema 



