USED IN ENTOMOLOGY. 23 



Mucronate, terminated in a sharp point. See cuspidate. 



Muricate, armed with sharp rigid points. 



Mystax, in some Diptera, is a patch of bristles or hair, imme- 

 diately above the mouth, on the lower part of the hypostoma, 

 below the vibrissse. 



N. 



Naked, (pupa) not folliculated ; (surface) glabrous. 



Nasus, the anterior termination of the face, particularly in Hy- 

 menoptera, often separated from the front by a suture, and 

 often elevated, sometimes gibbous ; it is very obvious in Vespa 

 and the kindred genera ; it has no relation with the organs of 

 smelling ; it supports the labrum. 



Nail, the unguis. 



Natatory, (feet) formed for swimming. See cursory, saltatory. 



Navicular, boat-shaped ; with a concave disk and elevated mar- 

 gin; cymbiform. 



Nebulous, clouded ; marked with many scattered, abrupt/dilated 

 lines of various forms. 



Neck, a contracted posterior termination of the head in some 

 insects. 



Nervures, nerves or vein-like processes which support the mem- 

 branous part of the wings; divided into radial, cubital, 

 brachial and recurrent. 



Neuroptera, an order of insects, including such as have four 

 finely reticulated wings and no sting, as Dragon-flies, May- 

 flies, &c. 



Niger, black, a little tinged with gray. 



Nitidus, nearly synonymous with lucid, but is less brilliant, 

 and is applied to highly polished surfaces. 



Nutant, nodding; the tip bent down towards the horizon. 



Nymph, the second state of an insect, from the egg, the mem- 

 bers of which are free, or not inclosed with a common integu- 

 ment, as in Grillus. See chrysalis, aurelia, pupa. 



0. 



Ob, prefixed to a word generally signifies inversely. 



Obconic, inversely conic; conic with the vertex pointing down- 

 ward. 



Obcordate, inversely heart-shaped ; heart-shaped with the point 

 applied to the base of another object or part. 



Oblate, flattened ; this term is applied to a spheroid of which the 

 diameter is shortened at two opposite ends. 



Oblong, the transverse diameter much shorter than the longi- 

 tudinal. 



