430 ME. E. SAUiS'DEES ON THE TONGUES OF THE 



Lingua very elongate. Mentum elongate : labial palpi with the 

 first two joints sheath-like, the 2rid nearly as long as the 1st, 3rd 

 and 4th very short, divergent ; submentum very long, and the 

 arms of the lora likewise. 



PsiTHTiius, Lep. Ann. Soc. Ent. Fr. ii. (PI. X. figs. 1-3.) 



Labrum transverse, widely rounded in front, the centre of the 

 front margin slightly produced; epipharynx triangular; scales 

 of the maxillse small, but bearing several long bristles. Maxillary 

 palpi 2-jointed ; blades of the maxillae elongate, their apices 

 slightly incurved and hook-like, their inner margins widely mem- 

 branous, showing the hairs which fringe the thicker part of the 

 blade beneath very clearly. Paraglossse with their dorsal plates 

 pointed at the apex, the base bearing a few lateral hairs ; lateral 

 portions sheath-like, rounded at the apex. Lingua very long. 

 Mentum beneath parallel-sided, truncate at the apex ; 1st and 

 2nd joints of the labial palpi very wide and sheath-like, with wide 

 membranous inner margins, 2nd about one fourth as long as the 

 1st, 3rd and 4th very short, cylindrical and divergent. Sub- 

 mentum shortly pyriforra. Sclerites of the hypopharynx joining 

 the mentum at some distance from the base ; lora with short 

 curved arms ; cardines nearly straight. 



BoMBUS, Latr. Hist. Nat. Ins. xiv. p. 63. (PI. X. figs. 4-6.) 



So like Psithyrus in all its details that there really is no object 

 in giving a special description of them ; for particulars, there- 

 fore, see that genus. 



Apis, Linn. Syst. Nat. ed. x. 1. p. 574. (Pi. X. figs 7, 8.) 



Labrum widely transverse, rounded in front ; epipharynx 

 pointed ; scales at the base of the maxillse not represented as far 

 as I can see. Maxillary palpi 1-jointed ; blades of the maxillse 

 very widely membranous inwardly, their apices with a few short 

 bristly hairs. Paraglossse ensheathiag the lingua at its base, 

 produced at their apices into two rounded, hyaline lobes ; lingua 

 elongate. Mentum heneath short, twice and a quarter as long as 

 wide, its npex truncate. Labial palpi with the 1st joint widely 

 membranous on its external margin, fringed with long hairs on 

 its internal margin, and set with long stiff bristles on its dark 



