1922.] 17 



grev-haired hind trochanters are said to distinguish the female from that 

 of derhamellus, but the latter appears to me to vary somewhat in both 

 these characters in my specimens, so that the separation of this sex is 

 likely to be difficult.— R. C. L. P.] 



THEEE HERMAPHEODITE BEES. 

 BY R. C. L. PERKINS, M.A., D.SC, F.R.S. 



Hylaeus confustis Nyl. 

 A bilaterally asymmetric example. 



Left side. Eight side. 



Mandible, antenna and face coloured Head as in $ black with only a 



as in normal S ■ triangular yellow spot along the 



eye-margin. 

 Antenna 1.3-jointed, normal in Antenna and mandible of normal 



structure for J . $ structure. 



Yellow prothoracic mark smaller. Yellow mark on the collar larger. 



flind leg with yellow metatarsus. The metatarsus black. 



The thorax and its appendages, except for the two points mentioned, 

 appear to be 5 • The claw-joint of the left bind leg is missing, but one would 

 expect the claws to have been S ii^ structure. Those of tlie other legs are 

 clearly $ . Abdomen apparently wholly male, the apex blunt, the ventral 

 tubercles distinct. The more terminal segments are lavgely withdrawn and 

 are difficult to see. The sculpture of the dorsal surface, however, is much less 

 distinct than in most <S c5',and the segments are even less punctured and more 

 shining than in most females. The yellow of the face on the c5' side has its 

 inner margin nearly straight along the middle line. 



This specimen was caj^tured in June 1915 by Mr. P. Harwood, when 

 he was in camp near Salisbury. 



Salictus pauxillus v. immargiiiahis Sch. 



This specimen is bilaterally symmetrical. 



The head is like that of the S , the clothing of the face as in that sex, the 

 apex of clypeus and labrum being yellow-spotted. Antennae quite abnormal, 

 but alike, 13-jointed, much shorter than in a normal male, and as if inter- 

 mediate in character between c? and 5- Third and fourtli joints very short — 

 the 4th in normal c5' is strongly elongate — the 5th nearly square in outline? 

 longer and larger than the preceding transverse one, not at all like the trans- 

 verse 5 5th joint, nor the elongate one of the c? in normal examples ; the 

 following joints are male-like, slightly elongate, but much less so th^n in 

 normal cJ, but still quite unlike the §. Thorax in appearance, punctura- 

 tion, etc., J, but all the legs are $. Abdomen entirely male outwardly, the 

 genitalia not examined. 



Taken at Isle Brewers, near Taunton. A very remarkable speci- 

 men on account of its short, but, on the whole, male-like antennae. 



c 



