BEMBEX.— STIZTTS. 101 



shining, minutely punctured ; a broad line on either side of the basal segment, a much 

 broader one, with an elongate broad black mark in the centre, on the second segment, 

 a curved line on the third, fourth, and fifth segments, and a U-shaped line on the last 

 segment, clear yellow ; ventral segments broadly yellow at the sides and narrowly so 

 at their junction ; last dorsal segment bearing large, separated punctures, except in the 

 centre, the sides covered with hairs and bristles, the apex broadly rounded, slightly 

 incised in the centre ; beneath shining and bearing scattered punctures laterally. 

 Legs clear yellow, the coxse and trochanters for the greater part black, the femora 

 lined above with black. 



2. Bembex pallidipicta. 



Bembex pallidipicta, Smith, Ann. & Mag. Nat. Hist. 4th ser. xii. p. 300 \ 



Hab. Mexico 1 . 



y, 



3. Bembex mima. 



Bembex mima, Handl. in litt. 



Hab. Mexico, Tierra Colorada, Tepetlapa and Venta de Zopilote, all in Guerrero 

 (H. H Smith). 



V 4. Bembex monodonta. (Tab. VI. figg. 20, e ; 20 a, male organ.) 

 Bembex monodonta, Say, in Long's Second Exped. p. 335 * ; Complete Writings, i. p. 226. 

 Microbembex monodonta, Patton, Bull. U.S. Geol. & Greogr. Surv. v. p. 362. 

 Bembex ciliata, Smith, Cat. Hymen. Ins. iv. p. 329 2 . 



Hab. Noeth Ameeica \ Kansas. — Mexico, Presidio near Mazatlan, Tres Marias Is. 

 (Forrer), San Bias in Jalisco (/Schumann), Atoyac in Vera Cruz (H. H Smith) ; Guate- 

 mala, Champerico, Pantaleon 1700 feet (Champion). — South Ameeica, Amazons 2 . 



It is doubtful if this is the Bembex ciliata, Fabr. (Syst. Piez. p. 226), nor is it clear 

 that it is the B. ciliata of Lep. de St.-Fargeau and Serv. (Hist. Nat. Ins., Hymen, iii. 

 p. 279) ; I should say, however, that it is the B. ciliata of Dahlbom (Hym. Eur. i. p. 488). 

 Smith's B. ciliata is certainly conspecific with our insect : I have examined his types. 



The species appears to be quite common in Central America. 



v 5. Bembex nubilipennis. (Tab. VI. fig. 19, ? .) 



Bembex nubilipennis, Cresson, Trans. Am. Ent. Soc. iv. p. 218 \ 

 Hab. Noeth Ameeica, Texas 1 . — Mexico, Jaral in Guanajuato (Schumann). 



STIZUS. 



Stizus, Latreille, Gen. Crust, et Ins. iv. p. 100 (1804). 



Larra, Smith, Cat. Hymen. Ins. iv. p. 337 (1856). 



Bembecinus, Costa, Fauna del Eegn. Napoli, Imen. Acul. pt. iii. p. 4 (1859). 



Stizomorphus, Costa, loc. cit. p. 7. 



