USED IN ENTOMOLOGY. 89 



Nopalry: a plantation of cacti for raising cochineal insects. 



Normal: of the usual form or type; not out of the ordinary. 



Notate: marked by spots: with a series of depressed marks as a sculpture. 



Notched: indented, cut or nicked; usually a margin. 



Notocephalon: in some aquatic Hcmiftcra, that part of the head which is 



apparent from a dorsal aspect. 

 Notodont: with toothed backs: applied to a series of moths whose larvae are 



more or less conspicuously humped on dorsal surface. 

 Notopleural suture: = dorsopleural suture; q. v. 

 Nototheca: that part of the pupa covering upper surface of abdomen. 

 Notum: the dorsal or upper part of a' segment: = tergum. 

 Nucha: the upper surface of the neck connecting head and thorax. 

 Nucleate: with, or having a nucleus. 

 Nucleolus: the small portion of matter in the nucleus most readily affected 



by staining fluids. 

 Nucleus: a well-defined, differentiated, round or oval body imbedded in the 



cell contents. 



Nude -us: naked: a surface devoid of hair, scales or other vestiture. 

 Nuditas: = nudity. 



Nudity: the state of being naked or bare of vestiture. 

 Nurses: worker ants or worker bees which care for the eggs, larvse and 



pupae, but do not forage, the latter function being taken up later, when 



nursing is given up. 



Nutant: nodding; the tip bent toward the horizon. 

 Nutritive chamber: an enlarged section of ovarian tube, filled with granular 



nutritive material used in developing the egg cells. 

 Nymph: the larval stage of insects with incomplete metamorphosis: applies 



also to their pupal stage, and sometimes used as = pupa. 

 Nympha inclusa: =. coarctate pupa; q. v. 

 Nymphipara: applied to insects that bear living young in an advanced stage 



of development : see also pupipara. 



Ob-: as a prefix, means inversely. 



Obconic: conic, with the apex pointing downward. 



Obcordate: inversely heart-shaped, with the point applied to the base of 



another object or part. 



Obese -us: unnaturally distended: usually applied to the abdomen. 

 Oblate: flattened; applied to a spheroid of which the diameter is shortened 



at two opposite ends. 



Oblique: any direction between perpendicular and horizontal. 

 Oblique vein: in Odonata; an apparent cross-vein situated between M2 and 



Rs, distad to the level of the nodus and inclined obliquely, from its front 



end, backward and outward ; in reality the basal part of Rs. 

 Obliterate: nearly washed out; indistinct. 

 Oblong: longer than broad. 

 Obovate : inversely egg-shaped ; the narrow end downward. 



