262 Mr. E. Sa>nnders' further notes on the 



produced at the apex, 8th produced into an elongate 

 process ; armature with the stipites stout ; lacinise long 

 and very narrow ; sagittse produced beyond the apex of 

 the lacinise ; spatha long, extending to about the apex of 

 the lacinise. 



Of the several other curious genera that are placed 

 here I have been unable to procure specimens for dis- 

 section. 



Melecta. — 7th segment consisting of two elongate con- 

 vergent rather narrow plates, which are united near the 

 apex by only a thin membrane, so that in dissecting they 

 often become separated ; 8th subtriangular, pointed at 

 the apex ; armature large and massive ; lacinise pro- 

 duced into a narrow pilose process (see PL VIII., 

 figs. 1,2). 



Crocisa. — Almost as Melecta, but the lacinise of 

 the armature are broader and set with strong bristly 

 hairs. 



Ccelioxys. — The terminal segments and armature in 

 this genus resemble very closely those of Megachile and 

 the other Dasygastrce, the 6th dorsal segment terminates 

 the abdomen, and the anal opening is inferior, the 7th 

 dorsal being only visible beneath ; only five ventral seg- 

 ments are exposed ; the 7th is a mere membranous band, 

 slightly thickened at each side, and almost certain to 

 get broken in dissecting ; the 8th is short and tongue- 

 like, lying close under the armature ; the armature itself 

 has the stipites without lacinise, and their apices hairy, 

 the sagittse covered with a membrane to their apex (see 

 PI. VIII., figs. 3—7). 



Dioxys. — Similar to Ccelioxys in the 7th and 8th 

 segments, but armature clear testaceous-brown, highly 

 polished and glabrous ; stipites simple and narrow, 

 slightly curved ; sagittse widely separated, flat, and paler 

 than the stipites, hamate externally at the apex ; be- 

 tween the sagittse is stretched a membrane, which is 

 clear at the sides and thicker in the centre (see PI. XIII., 

 fig. 16). 



Clmlicocloma. — Only four ventral segments clearly 

 exposed ; 5th with a squarish central scale-like spot 

 at the apex ; 6th narrow and submembranous, bear- 

 ing a dense tract of hairs across its middle, each 

 terminating in several finer hairs in C. 2)yrenaica. In 

 vmraria this segment has most remarkable characters ; 



