THE CANADIAN ENTOMOLOGIST. 



35' 



liave an anang.nnent that will do little violence to the affinities of these 

 four families, as far as our present knowledge of the larval and adult 

 structures allows us to judge. 



3 



Ki(.. .0. • 



In order tiiat the characters alluded to may be more readily appreci- 

 ated, I have prepared sketches (Fig. 10), .allowing the structure of the 

 under side of the prothorax in the Melandryida-, Pyrochroidw, Pythidie, 

 .Egialitida' and I'enebrionidfe. i represents Melandrya striata ; 2, 

 Pyrochroa flabeUaia ; 3, Pytho Americana ; 4, Lecontia discicollis ; 5, 

 ALgiaiites Californicus ; and 6, Nyctobates Pennsylvanica. All are 

 lettered alike,/ indicating the prosternum, cc the coxal cavities, and es the 

 thoracic side pieces, the Sutures between the episterna and epimera being 

 obliterated or indistinct. 



THE BEE-GENUS APISTA, ETC. 



When writing (p. iio) on the genus A'pista, F. Smith, i86i, I 

 unfiirtunateiy overlooked the flict that tiie generic name is long preoccupied 

 {Apista, HiJbn, 1S16, and the similar Apistus, Cuvier, 1829). The 

 bee genus from Brazil may therefore be known as Egapista, n. n., type 

 Egapista opahna {Apista opaPina, Smith). 



I find that the name of the African bee-genus Serapis, F. Smith, 1854, 

 is also preoccupied {Serapis, Link, 1830); it may be changed to Serapista; 

 type Serapista dniticulata {Serapis denticu/atus, Smith). 



The name Eumorpha proposed by Friese for a group of bees, is also 



preoccupied. The group R/iodoce/itris, Friese, includes the type of the 

 prior Heteroceutris, Ckll.; so the latter name must be used for the grou[). 

 unless (as seems jir^ibable) it can be divided. T. D. A. Cockerell. 



