448 HYMENOPIERA. 



transverse keel where it bends downwards, and above this keel some longitudinal ones. 

 Abdomen shining, the base laterally obscure brownish. The hind coxae are, for the 

 greater part, black above ; the middle femora are brownish beneath ; the tips of the 

 tarsi are blackish. The wings are whitish-hyaline ; the small fascia at the transverse 

 basal nervure is irregular, that at the stigma is broad, extends right across, and is of 

 equal breadth ; the radial nervure does not extend much beyond the stigma. 



Subfam. BETHYLINJE. 



This subfamily approaches very closely to the " aculeate " section of the Hymenoptera, 

 and has been by some authors (e. g. Haliday) placed among them. The trochanters 

 have only one joint. 



SCLERODERMA. 



Sclerodermus, Latreille, Gen. Crust, et Ins. iv. p. 119 (1809). 



Scleroderma (Klug), Westwood, Trans. Ent. Soc. Lond. ii. p. 164 (1839), and 1881, p. 117; S. 



Saunders, Trans. Ent. Soc. Lond. 1881, p. 109. 

 Sclerochroa, Forster, Hymen. Stud. ii. p. 95 (1856). 



The name Sclerochroa was substituted by Forster on account of Scleroderma being 

 preoccupied for a genus of fungi. I do not, however, accept the rule that the same 

 name cannot be used in Botany and Zoology. 



Scleroderma has a wide range over the globe. 



l. Scleroderma soror. 



Scleroderma soror, Westw. Trans. Ent. Soc. Lond. 1881, p. 123, t. 5. fig. 5 \ 

 Eab. Mexico (Coffin 1 ). 



APENESIA. 



Apenesia, Westwood, Thes. Ent. Oxon. p. 170 (1874) ,- Trans. Ent. Soc. Lond. 1881, p. 130. 



Agenesia appears to differ chiefly from Scleroderma in having the tibiae and tarsi 

 thickly spinose, these parts in Scleroderma being bare or but slightly pilose. 



Four species have been described : two from the Malay region, one from the Amazons, 

 and another from Nicaragua. 



l. Apenesia chontalica. 



Apenesia chontalica, Westw. Trans. Ent. Soc. Lond, 1881, p. 131, t< 7. ff< 3, 3 a-d \ 



Hab. Nicaragua, Chontales l (Belt). 



