CLASS V. INSrCTA. 283 



SriRPS \.— Hinder tarsi v:\th the first joint nearly equally broad, or 

 gradually narrowing from the base to the apex, the second joint ori- 

 giiiatlng from the middle of its apex. 



A . Palpi alike. 

 Genus 172. PANURGUS. Pauz., Spimhi, T^Ur., Leach. Apis. 

 Scopoli. DASYi'onA. llLig., Fubr. Apis. * a. Kirby. Eniops. 

 Klug. 

 Mandibles not dentatcd : anlennte straight in both sexes, and subcla- 

 vate : superior vings with two submarginal cells : ocelli disposed in a 

 triangle. 

 Sp. 1. Pun. Banksianus. 

 Apis Banksiana. Kirby. 

 Inhabits . 



B. Palpi unequal ; the labial palpi set i form. 



a. Lahrum nearhj quadrate, transverse, or not much longer than 

 broad. Mandibles tridcntutc at their points. {Superior wings with, 

 three submarginal cells.) 



Genus 473. CERATINA. Utr., Jurinc, Spinola, Leach. Apis. 



Villers, Rossi, Kirb,/ ( *« d. 2 a). Megilla. Fabr., Illig. 



Prosopis. Fabr. Pitiiitis. King. Clavicera. Wulckcnaer. 



Labrum almost quadrate, perpendicular, entire: anlenme gradually 



thickening towards tlieir extremities; the scapus not large. 

 Sp. 1. Cer. c(crulea. 



A\ns CcTrulca. Vill. Apis cyanea. Kirby. 

 Inhabits tlie flowers of the llagwort. 



b. Labrum longer than broad, inclined perpendicularly ; porrect be- 

 fteath the mandibles; elongate, quadrate. Mandibles strong, por- 

 rccted, with the apex bidentate in some ; trigonatc and often midt'ulen- 

 tale in others. 



* Labixil palpi zvifh the three first joints contiguous; the fourth in- 

 serted under the external apex of the third. 



Genus 474. CIIELOSTOMA. Latr., Leach. Apis. Linne, Vill., 

 Kirby {** c. 2 y). IUi^jevs. Fabr. Anthrophoka. //%., 

 Fabr. Antiiidium. Panz. Tr.Vchusa. Jurine. 

 Mandibles (of the females) arcuated; their apex bidentate or furcate, 

 porrect, internally hairy: maxillary palpi three-jointed. 



The bodies of the insects composing this genus are very long, 

 slender, and cylindric. The belly of the^male, near the anus," is con- 

 cave, and covered with down, and at its ba'-e is a horn or protube- 

 rance. When asleep they roll themselves up like an armadillo, the 

 horn or protuberance fitting into the anal cavity. They nidificate in 

 posts and rails. The males usually repose in the centre of a flower. 



