116 HYMEXOPTERA. 



Megachile maritima. Very abundant on Corton Heath, 

 north of Lowestoft, and also Ccelioxys quadridentata, C. 

 rufeseens, C. umbrina and C. simplex. 



Ceratina ccerulea. Taken at Folkestone, on the Echium 

 vulgare, by Mr. S. Stevens, in June. 



Bombus Smithianus. Taken by Mr. Henry Squire, in 

 Shetland. 



Bombus nivalis. From the same locality, by Mr. Squire. 



The occurrence of hermaphrodites amongst the Aculeate 

 Hymenoptera is of such rare occurrence, or has been so 

 seldom observed, that the capture of a third example, and 

 that in a genus in which it has not, to my knowledge, been 

 previously observed, is worthy of a special notice. Mr. James 

 Stokes captured an hermaphrodite of Andrena nitida, and I 

 am indebted to him for the liberal presentation of the spe- 

 cimen to my collection. The right side is male, the man- 

 dible being slender and arcuate, the antenna thirteen-jointed, 

 and the side of the face with long white pubescence; the 

 thorax exhibits scarcely any perceptible difference on the 

 upper side, but beneath the difference is very striking, the 

 female side being much swollen, whilst the male side is very 

 much less convex ; it is in the legs that the most marked 

 difference is seen, the basal joint of the tarsi of the anterior 

 and intermediate pair are stout, and densely pubescent be- 

 neath on the female side, whilst on the male side they are 

 slender, and have only scattered hairs ; the posterior legs 

 are, however, the most anomalous : on the female side the 

 trochanter has a long floccus of white hair, the femur has 

 a fringe of a similar colour, and the tibia is densely clothed 

 with short hair, which is dark brown above and silvery be- 

 neath ; the male leg has none of these appliances, but is very 

 slender, elongate and slightly pubescent ; the abdomen has 



