400 TESPID^. 



good distance from their nests. Their stings are always painful, 

 and very often dangerous. 



Ken ^^ ^^''^ Species. 



A. 5 over 30 mm. ; ^ over 22 mm. in length. 



a. Abdomen entirely dark brown, with narrow 



transverse apical yellow bands on lst-5th 



segments ; 6th segment entirely yellow . . V. magnifica, p. 401. 



b. Abdomen with the basal two segments 



ochreous yellow V. ducalis, p. 401. 



B. 2 not over 25 mm. ; g not over 22 mm. in 



length. 



a. Head, thorax, and abdomen pale honey- 



yellow V. dorylloides, p. 400. 



b. Head, thorax, and abdomen some shade of 



black, brown, reddish-brown, or sulphur- 

 yellow, variegated with ferruginous or 

 bright yellow. 

 a'. Second abdominal segment, sometimes the 



1st segment also, bright or orange-yellow. V. cincta, p. 402. 

 b' . Second abdominal segment entirely light 



chestnut-red V. orientalis, p. 403. 



c. Second abdominal segment entirely brown 



or black V. basalis, p. 403. 



d'. Second abdominal segment with a broad 

 transverse apical band yellow. 

 a^. Median segment yellow, with a Y-shaped 



black mark V. bicolor, p. 404. 



b"^. Median segment black. 



a^. Head narrower than the thorax .... V. structor, p. 404. 



h^. Head as wide as the thorax V. velutina, p. 405. 



C-. Median segment dull yellow, the middle 



sut?used -with black V. analis, p. 405. 



e' . Second abdominal segment with a narrow 

 transverse apical band yellow. 

 a^. Mesonotum black, unmarked. 



«». 5. Length 11-12 mm.; ^. Length 



9-10 mm V.fiavic.eps, p. 406. 



b^. 2 unknown ; ^ . Length 18-20 mm. V. vivax, p. 406. 

 6'-. Mesonotum black, marked by a U-shaped 



yellow mark. ^ . Length 15-17 mm. V. auraria, p. 407. 



695. Vespa dorylloides. (P). Ill, fig. 5.) 



Vespa anomala, Sauss. Mon. Guep. Soc. p. 112, pi. xiv, fig. 2. 

 Vespa dorylloides, Sauss. Mon. Guep. Soc. {Errata), p. 256 ; Smith, 

 Cat. V, p. 120. 



5 ^. Head, thorax, and abdomen impunctate, silky, somewhat 

 densely villose ; head as broad as the thorax, short, the cheeks not 

 much developed, the vertex narrowed, the eyes very nearly reach- 

 ing the base of the mandibles below, the clypeus large, square, 

 anteriorly bilobed ; antennae stout, long, filiform ; ocelli large and 

 very prominent ; thorax and abdomen depressed, the latter very 

 long and narrow. Pale honey-yellow, the antennae, the emar- 



