Vei 240 



Vein. — A tubular vessel which receives the blood 

 or vital fluid and conveys it to the heart and 

 circulating centres. (L. vena, a blood vessel.) 



Vena. — A vein. (L.) 



Vense longitudinales. — The longitudinal veins of 

 the wing, which are connected to each other by 

 the transverse veins. (L.) 



Venose, Venous. — Painted with lines that branch 

 like veins. (L. vena.) 



Vent. — The anus. — (fent, from O.Fr. fente, a slit.) 



Venter. — The belly, the lower or prone part of the 

 abdomen. (L.) 



Ventrad. — An abbreviated form of ventrally, or 

 ventral. 



Ventral nerve trunk. — A small inconspicuous nerve 

 trunk originating from the ventral side of the 

 third abdominal ganglion, extending latero- 

 ventrally, and sending ofi branches which 

 innervate the ventral muscles. 



Ventral segments. — The transverse segments of 

 the belly. They include the elastes, when they 

 are present. (L. ventralis, from venter, the 

 belly.) 



Ventral sympathetic system. — [See Superadded 

 nervous system.] 



Ventral tube, or sucker. — A more or less simple 

 tubercle, divided into two halves by a septum, 

 and situated under the anterior abdominal 

 segment of the Collembola. The tube varies 

 in construction in the different genera. 



