326 T. D. A. COCKERELL. 



stigma; hind tarsal.joint very broad. T. diversipes Klug, T. ampli- 

 pennis Sm., T. basalts Sm., T. maura Cress, and T. lugubris Cress, 

 are coal-black. 



EXONALOPSIS Spiuola. 



Exomalopsis rufitarsis Sm. (T.), 9 • Abdomen very shining 

 black ; basal nervure passing basad of t. m ; stigma dark brown. 



E. fulvescens Sm. (T.), $. With much fulvous hair; tegulae 

 ferruginous ; stigma pale honey color ; b. n. passing far basad of 

 t. m. 



TETKALONIA Spinola. 

 Tetralonia fervens Sm. %. 



Compared with Melissodes luteicornis Ckll., $ , this is not so simi- 

 lar as I thought from the description. T. fervens is rather smaller 

 than M. luteicornis; it has the flagellum strongly crenulate; it 

 seems not unlikely that the flagellum was originally yellow, as it 

 has a rather pinkish appearance. 



Tel t-u Ionia fulviventris Sm. J. 



Abdomen beyond first segment with short fulvo ferruginous pile ; 

 hair of hind tibia? and tarsi long and bright red ; third antennal 

 joint about as long as 4 -j- 5. In some respects similar to the much 

 larger T. gabbi Cresson. 



Tetralonia flagellicornis Sm. % (T.). 



Looks like a Melissodes; the maxillary palpi are 6-jointed, 

 though the sixth joint is very small. Clypeus yellow, with hind 

 margin black; yellow spot on mandibles; antennae extremely long, 

 entirely black, flagellum crenulate; abdominal segments 2-5 with 

 entire apical bands of white pubescence, having a slightly greyish 

 tint. I think this should be known as Synhalonia flagellicornis. 

 Some of its characters remind one of S. crenulaticornis. 



Tetralonia. decorata Sm. is a remarkable species, with the tegu- 

 ment of the abdomen entirely fulvous. 



T. chinensis Sm. (N. China) has in theS extremely long, entirely 

 black antennae, as in flagellicornis. The labrum is yellow, but the 

 mandibles have no yellow spot. 



T. fasciata Sm. (N. China), % , has the antennae of about ordinary 

 length for the group, the flagellum ferruginous beneath. 



T. mirabilis Sm. is elsewhere referred to a new genus, Tricho- 

 cerapis. 



