424 ME. E. SAUNDERS ON THE TONGUES OF THE 



Melecta, Latr. Sist. Nat. xiv. p. 48. (PI. VIII. figs. 3, 4.) 



Labrum almost as long as wide, slightly narrowed, aud trun- 

 cately rounded in front, densely clothed with long, shortly 

 branched hairs. Epipharynx very long, narrow, and pointed ; at 

 the side of each sclerite of the hypopharynx near the base, the 

 investing membrane is chitinized into a dark plate, a character I 

 have only seen in this genus. At the base of the maxillse, lying 

 on the membrane, are two long dark chitinous plates which I 

 believe represent tlie basal scales. Maxillse nearly black on the 

 basal portion outwardly, membranous inwardly, bearing the 

 sclerites mentioned above ; palpi rather short, 4-jointed ; blades 

 forming two very concave sheaths, the superior portion narrow, 

 with only a very narrow membranous edge towards the apex of 

 their inner margins ; apices with a few very short hairs. Para- 

 glossae very long, narrow and pointed, extending almost to the 

 apex of the maxillse. Lingua very long, narrow, slightly con- 

 stricted at the extreme base. Beneath, with the mentum very 

 long ; labial palpi 4-jointed ; 1st joint more than three times as 

 long as the 2nd ; 3rd and 4th subequal, together not quite half 

 so long as the 2nd; 1st and 2nd joints flat, and somewhat 

 sheath-like ; 3rd and 4th cylindrical. Submentum elongate and 

 parallel-sided, except at the extreme apex ; lora and cardines 

 very long. 



CffiLioxTS, Latr. Gen. Crust, et Ins. iv. p. 166. 

 (PL VI. figs. 4-6.) 



Labrum longer than wide, parallel-sided ; its apex abruptly 

 truncate. Epipharynx hidden beneath the labrum. Scales at 

 the base of the maxillse strongly developed, elongate oval, 

 fringed with long hairs, their bases hidden in the specimen 

 before me by the labrum ; sclerites of the hypopharynx strongly 

 developed. Maxillary palpi two-jointed ; apical joint very small 

 and narrow ; blades of the maxillse pointed, submembranous, 

 with a strong thick midrib from which a series of beautifully fine 

 parallel strise extend on to the membrane at each side, those on 

 the inner side extend about halfway across the membrane, those 

 on the outer side, which is convex, appear to extend to the 

 exterior margin, and on the reverse or concave underside of the 

 blade appear as ridges, which under a |-inch objective may be 



