152 Records of the Indian Museum. [Voi,. XVI, 



ences in the dentition and the colour of the nacre is totally 

 different. The outline is broader than that of L. consohrina (Lea), 

 the shell much thinner, the epidermis paler, the pseudo-cardinal 

 teeth smaller and less prominent and the laterals straighter. 

 The measurements of four shells are as follows: — 



" Not uncommon in shallow muddy bays,many specimens found 

 in damp mud (after a night's light rain) in a drying creek. Some 

 of these were a considerable distance from water, but they were in 

 an active condition. These individuals were observed lying hori- 

 zontally dorsal side uppermost in shallow and narrow grooves in 

 the mud some four or five inches long and not quite deep enough 

 to contain their shells. Probably they had been buried deeper in 

 the mud and had come to the surface owing to the rain. When 

 placed in a jar of mud they sank to the bottom and there lay 

 horizontally " [field notes). 



VII. Aquatic and semi-aquatic Rhy^chota from the 

 Satara and Poona Districts. 



By C. A. Paiva, Assistant, Zoological Survey of India. 



Specimens of the following species were collected by Dr. N. 

 Annandale in the course of his tour : — 



F"am. Hebridae. Fam. Nepidae. 



Hehriis bombayensis, sp. nov. Laccotvephes ruber (Linn.j. 



Fam. Hydrometridae. Laccotiephes griseus, Guer. 



Hydrometra viftata, Stal Fam. Naucoridae. 



Rhagovelia nigricans (Burm.). Heleocoris elongatus, Montand. 



Onychotrechus rhexenor, Kirk. Heleocoris obliqiiatus (Spin.). 



Ptilomera laticattdata (Hardw.). Naucoris sordidus, Dist. 



Metrocoris stali (Dohrn.). 

 Fam. Reduviidae. 



Fam. Notonectidae. 



^ Enithares templetoni (Kirby). 



Pirates arciiattis {StaV). • Enithares lactea, sp. nov. 



Fam. Pelogonidae. Fam. Corixidae. 



Pelogomis marginatiis (Latr.). Corixa Jiieroglyplitca, Duf 



Family Hebridae. 



Hebrus bombayensis, sp. nov. 



(Plate III, fig. 6). 



One specimen from surface of a small pool at the edge of the 

 river at Medha, ca. 2,200 feet, Yenna Valley, Satara district, 27-ii- 

 4-iii-i9i8 and five specimens found running and flying on vertical 



