584. 

 ALYSON KENNEDII. 



Order Hymenoptera. Fam. Crabronidae. 



Type of the Genus, Alyson bimaculatus Panz. 

 Alyson Jur.,Panz.,Lat., V. Lind., Curt. — Pompilus Fab. 



Antennce remote at their insertion, which is a little below the 

 middle of the face, at the base of the clypeus, longer than the 

 head, filiform and 13-jointed in the male, basal joint longer, 

 short and stout, 2nd subglobose, 3rd scarcely longer, 4th ob- 

 long, the remainder nearly of equal length, apical joint subconic 

 (1 (J); more curved, slender, a little clavate and 12 -jointed in 

 the female, basal joint long and stout, 2nd obovate, nearly as 

 long as the 1st, the latter shorter, the remainder subturbinate, 

 gradually increasing in diameter and decreasing in length, apical 

 joint elongate ovate (1 ? ). 



Lahrum inserted under the clypeus, transverse, pocket-shaped, 

 anterior margin bisinuated, forming 3 lobes, sparingly ciliated 

 with spines (2), 



Mandibles crossing, long and narrow, curved and concave, biden- 



tate at the apex and ciliated with bristles on both margins (3). 



Maxillce ovate, terminated by 2 incurved lobes, the inner one 



ovate and transparent, the outer one larger concave horny and 



hairy outside. Palpi long, pubescent and 6-jointed, basal joint 



small, chalice-shaped, 2 following elongated, of equal length, 



slightly clavate, 4th the longest, 5th nearly as long, both linear, 



6th as long as the 3rd elongate-ovate (4). 



Mentum oblong, rounded at the base, deeply emarginate on 



each side, before forming a lobe in the centre to receive the Palpi 



which are long, rough with hairs and 4-jointed, basal joint a 



little the longest and clavate, 2nd short obtrigonate, 3rd and 4th 



nearly as long as the 1st, the former subelliptic, the latter 



drooping and elongate -ovate (5). 



Males much smaller than the females. Head short and broad ; face 



orbicular ; clypeus tridentate : eyes entire and ovate : ocelli 3 in 



triangle. Thorax oblong ; collar narrow and rather elongated in the 



female, in lohich sex the postscutel has the angles acuminated ; loith 



an elongate-trigonate space on the back, furrowed obliquely on each 



side. Abdomen elongate-ovate, attenuated in the male and bispinose 



at the apex. Wings with 1 marginal, 3 complete submarginal (the 



2nd petiolated) and 3 discoidal cells (9). Legs not long but slender: 



thighs, posterior with a strong sharp tooth beneath at the apex (Sf) •• 



tibiae short, especially the anterior, and spurred at the apex : tarsi 



very slender, long and 5 -jointed, basal joint long, the 3 following 



obtrigonate in the anterior with the terminal joint stout and ovate, 



4th not much shorter than the 5th, in the others : claws a«c?pulvilli 



distinct. 



Kennedii Curt. Guide, Gen. 688. 1. 



In the Author's Cabinet. 



The oeconomy of this genus is, I believe, unknown ; the males 

 bear a little resemblance, I think, to the Mutillidse, and the I'e- 



