108 



The Natuealist. 



Pelobius. 



p. Hermanni, F. Plentiful in some old ponds at Eufford, C. S. G. 

 Hyphidetjs. 



H. ovatus, L. Deysbrook, Gill Moss, Eainford, C. S. G., behind 

 Wavertree Park, common, J. W. E. 

 Hydroporus, 



H. reticulatus, F, Ditches near Altcar rifle ground, Sept., F. A. 

 H. inaequalis, F. Clay pits, Birkenhead, C. S. G., Wallasey and 



Crosby sand hills, abundant in the " flashes " of water, J. W. E. 

 H. decoratus. Gyll. Patrick Wood, C. S. G. 

 H, pictus, F. banks of Birket, near the Upton Road, C. S. G. 

 H. lepidus, 01. Altcar rifle ground; Crosby; New Brighton, F. A., 



J. W. E. 



H. rivalis, Gyll. Crosby, C. S. G., behind Wavertree Park, common, 

 J. W. E. 



H. septentrionalis, Gyll. " Bromborough Pool, and ditches, summer" 

 C. S. G. 



H. Davisi, Curt. Bidstone marsh, freely, spring," C. S. G. 



H. duodecimpnstulatus, 01. Ditches at Hayton, Knowsley, and 

 Bebington, summer, C. S. G. 



H. depressus, F. (elegans. 111.) with septentrionalis," C. S. G., 

 behind Wavertree Park, common, J. W. E. 



H. assimilis, Pk. " This species, first identified here by Dr. Schome, 

 from specimens taken by the late Mr. Johnson and myself in 1840, 

 in Moss-lake fields, has not been taken since this ground was built 

 upon ; it probably still exists in Parliament fields, C. S. G.'' 

 I took a single specimen behind Wavertree Park in 1875, J. W. E. 



H. dorsalis, F. " Bidston marsh, and Frankby," C. S. G. 



H. memnonius, Nic. Pond in the quarry, Rocky lane. West Derby, 

 J. W. E. 



H. erythrocephalus, L. Bidston marsh and Frankby," C. S. G. 



Crosby, F. A. River Birket, J. W. E. 

 H. planus, F. Abundant in all pits. 



melanocephalus, Steph. (pubescens, Gyll,) Crosby and Hightown, 



F. A. 



H. tristis, Pk. River Birket, J. W. E. 



H. obscurus, Sturm. With the preceding, J. W. E, * 

 H. palustris, L. Abundant in all pits and ditches. The commonest 



of the genus with us. 

 H. scalesianus, Steph. '* Ponds which empty themselves into 



Wallasey Pool," C. S. G. 

 H. lineatus, F. River Birket, near the Upton Road, C. S, G. 



