276 HYMENOPTERA. 



posterior margin a deep depression. Abdomen curved, and 

 having a scattered griseous pubescence, the apex rounded. 



The male resembles the female, but has the apical segment 

 of the abdomen tridentate. 

 Hob. East Indies ; N. Bengal ; Ceylon. 



Genus 31. CROCISA. 



Nomada, pt., Fabr. Ent. Syst. ii. 345 (1793). 

 Melecta, pt., Fabr. Syst. Piez. p. 385 (1804). 

 Crocisa, Jurine, Hym. p. 239 (1807). 



The mentum and labrum of about equal length ; the labial 

 palpi five-jointed; the basal joint elongate, full half the length 

 of the mentum, the second not half the length of the basal joint, 

 the third about half the length of the second ; the two apical 

 joints minute, placed near the apex of the third ; the paraglossae 

 elongate, slender, rather longer than the basal joint of the labial 

 palpi. Maxillary palpi two-jointed. The superior wings having 

 one marginal and three submarginal cells, the second restricted 

 towards the marginal, receiving the first recurrent nervure a 

 little beyond the middle, the third receiving the second recurrent 

 nervure at its apex. 



Type. Crocisa histrio. 



1. CROCISA HISTRIO. B.M. 

 Nomada histrio, Fabr. Ent. Syst. ii. 345. 1. 



Melecta histrio, Latr. Hist. Nat. Ins. iii. 



Fabr. Syst. Piez. p. 385. 1. 



Spin. Ins. Lia. fasc. 1. p. 153. 1. 

 Crocisa histrio, Latr. Gen. Cr. Ins. iv. 1 72. 



St. Farg. Hym. ii. 454. 1. 



Lucas, Hist. Nat. des Ins. iii. 411. 



Eversm. Butt. Mosc. xxv. 104. 1. 

 Hob. India ; France ; Russia ; Algeria. 



2. CROCISA SCUTELLARIS. B.M. 

 Nomada scutellaris, Fabr. Ent. Syst. ii. 346. 2. 



Panz. Faun. Germ. 32. 7- 

 Melecta scutellaris, Fabr. Syst. Piez. p. 387. 4. 



Spin. Ins. Lig. fasc. 1. p. 153. 2. 

 Melecta histrionica, Illig. Mag. ? 

 Crocisa histrionica, Latr. Gen. Crust. Ins. iv. 172. 

 Crocisa scutellaris, St. Farg. Hym. ii. 453. 7- 

 Hob. France ; Germany ; Italy ; Spain ; Albania ; Siberia ; 

 Turkey; Ceylon; Africa. 



