a Family of the Hymenoptera Heterogyna. 327 



latter their terminal joint obtuse, and these with eleven conspicuous 

 joints. 



Thorax scarcely more punctured than the head, the suture which separates 

 pro- and mesothorax curved forwards. 



Abdomen having the peduncle subglobose, the segments slightly constricted 

 at their base, slightly retuse at its extreme apex, where it has three mi- 

 nute teeth. 



In the collection of Mr. Thwaites. 



This species I have much pleasure in dedicating to my friend 

 G. H. K. Thwaites, Esq., an ardent lover and careful student of the 

 Hymenoptera; it is amply distinguished from the Typh. Kirbii by 

 the proportions and size of the terminal joint of the antennae, as also 

 by the different sulcation of the face. The species proves that these 

 insects, of which I had not before seen more than single specimens 

 of any, vary occasionally considerably in size. 



16. Lab. (5. Typhlopone) Spinolse, Shuck. Length If line. 



Pallide-testaceus, nitidus, mandibulis acutissimis, carinis faciei convergen- 

 tibus, angulalis. 



Entirely of a pale testaceous : head smooth : antennae having apparently 

 twelve joints arising from the large terminal joint being divided in its 

 middle by a slender dark ring : the carinse, behind which the antennae 

 are inserted, immediately converging, forming an elevated angle, the 

 apex of which is continued a short distance up the face, and at its ter- 

 mination there is a slightly indicated fossulet : mandibles having all 

 their teeth very acute. 



Thorax slightly punctured, the suture separating the pro- and mesothorax 

 nearly straight. 



Abdomen having the peduncle subglobose, and the base of the segments 



slightly constricted, its extreme apex slightly subretuse, and with 



three minute teeth. 



In the collection of Mr. Thwaites. 



This, which is the smallest of all the species, is distinguished from 

 all the rest by the carinse of the face and the peculiarity of its an- 

 tennae : I have seen but one specimen of it. 



These two species were accompanied with the following observa- 

 tions by Mr. Thwaites : " Of the Typhlopone a great number were 

 given to Mr. Raddon by a gentleman in the sugar trade, and from 

 these I picked out the series inclosed ; amongst the multitudes of 

 them I had in my possession I could not discover any but similar 

 ones to those sent, and I concluded from their abundance that they 

 must be a common insect. The gentleman who found them informs 

 me that sometimes upon opening a hogshead of sugar from the West 



