3706 Insects. 



Hydrophilus caraboides. 



Philhydrus melanocephalus. 



Cyclonotum orbiculare. 



Helochares lividus. Local. 



Orthoperus curvimanus, Mots. Under rubbish near the edge of the 

 former Mere ; Mr. Wollaston. 



Limnichus sericeus. Edges of Holme Lode ; Mr. Wollaston. 



Malachius sanguinolentus and fasciatus. By sweeping ; banks of 

 Holme Lode. 



Rhinonchus tibialis, crassus, bruchoides. The two first in profu- 

 sion amongst vegetation at the edges of the Lodes: the last scarcer; 

 taken by Mr. Wollaston on Polygonum Hydropiper. 



Bagoiis binodulus. Water-plants, rare. 



Notaris Scirpi. Not uncommon, at roots of herbage and in sedge. 



Lixus productus. Two specimens, by sweeping sedge. 



Apion vicinum. Rare, on banks of railroad opposite the windmill. 

 „ Ervi, vorax, Loti, Hookeri ; rare : and Viciae, by Mr. Wol- 

 laston on sides of the Lode. 



Auchenia 4-maculata. Taken by Mr. Wollaston at the side of 

 Holme Lode. 



Macrocnema erythrocephala, and var. nigricollis. In profusion 

 from colt's-grass. 



Haltica pubescens, Ent. Hefte. This hitherto almost unique insect 

 (in Britain) is not uncommon by sweeping upon the banks of Holme 

 Lode, both at the end near the village, and also opposite the large 

 willow-tree. 



Thyamis holsatica. Rare ; taken by Mr. Wollaston on tire edges 

 of Holme Lode. 



Cassida vibex. Scarce. 



Scymnus analis. By Mr. Wollaston. 



By far the best locality in the neighbourhood is the Lode itself, 

 which, commencing at the village of Holme, runs through the dis- 

 trict of the former Mere : its sides, more or less uncultivated, are 

 clothed with most luxuriant herbage, and produced everything (and 

 that in greater profusion) which we captured in more remote loca- 

 lities. Generally speaking, the actual fen-land will not repay much 

 investigation ; while the dreary tract of country formerly covered by 

 the Mere, hardly supplied us with a single insect. 



With respect to water-beetles, the best localities are the ends of 

 the stagnant ditches that supply the place of hedges among the fields 

 adjoining the fen, especially those immediately below Yaxley village. 



