AMERICAN ENTOMOLOGY. 159 



Undulated, waved obtusely, without any right lines, but in seg- 

 ments of circles. See Jiexuous. 



Unguiculate, armed with a hook or nail. 



Unguis, nail or claw, two incurved hooks which terminate the 

 tarsus. See pulviUus. 



Ungulate, hoof-shaped ; like a horse's hoof. 



Urceolate, pitcher-shaped ; swelling in the middle like a pitcher. 

 See infundibuZiform, cyaihiform. 



Utriculus, a little bag, or hollow vesicle. 



V. 



Vagina, every part, the office of which is to cover, defend, or 

 support the tongue — it is divided into tubus, valvse, palpi, lora, 

 and annulus, (Kirby) ; the bivalve coriaceous sheath or cover 

 of the spicula. 



Vagi nate, (aculeus) inclosed in a bivalve sheath. 



Valvse, or valmdee, in the Hymenoptera, are two coriaceous laminae 

 or sheaths which surround and inclose the vagina, and which 

 support the exterior palpi ; small concave membranes inclosing 

 the proboscis ; the maxilla . 



Variety, a peculiarity of color or form in an individual, not 

 proper to the species ; this difference is sometimes inherited 

 by several successive generations. 



Variolous, with large, unequal, impressed points. 



Veins, (Venae). See nervures. 



Velum, membranaceous appendages attached to the spinvda at 

 the apex of the anterior tibiae. 



Venter, the inferior portion of the abdomen, separated from the 

 tergum by lateral sutures, and divided into segments. 



Vcntricose, distended ; bellying ; inflated. 



Vernantia, vernatio; moulting, the shedding of the skin or 

 exuvia. 



Verrucose, having little hard lumps or wart-like elevation- upon 

 the .surface. See papillous, apiculate. 



Versatile, vane-like ; turning about like a vane. 



Vertebral, of or belonging to the vertebra; generally used to 

 indicate spots, lines or a different shading of color, &c, im- 

 mediately over the part corresponding with the vertebral column 

 in a vertebrate animal. 



