78 the entomologist's record. 



gebogen " is probably happier than Dr. Sharp's " crassiore et 

 breviore." 



After careful examination of a number of examples under high 

 power (about x 400 magnification) it appears to me that the inner 

 claw referred to differs even more in the two species, since, in all the 

 examples of J palustris which I have examined, I find that this claw 

 is not only very much thickened and strongly curved, but that its 

 underside is grooved or hollowed out. This character is not always to 

 be seen at the first glance, and its visibility depends upon the position 

 of the claw, but I have not failed to find it in any of the thirty odd 

 specimens I have examined, specimens from several parts of England 

 and Scotland. 



In $ incognitas, on the other hand, there is no such hollowing out. 

 The inner claw is slightly thicker and heavier than its neighbour, and 

 it is apparently rather less curved than in palustris, but it is essentially 

 a simple claw. 



In the females of both species, the claws of the anterior tarsi are 

 similar, and apparently equal in length, but those of palustris are, I 

 think, slightly heavier than those of ineognitus. 



The anterior tarsi of the S are different in both species from those 

 of the ? . In the 3 the middle joint is transverse, whereas in the $ 

 it is about as long as it is broad. 



Dr. Sharp mentions, in describing ineognitus {Dytiscidae, p. 475), 

 that the tarsi are slender, but he does not compare them with those of 

 palustris. Ganglbauer, on the other hand, mentions that, in this species, 

 the tarsi are narrower (schlankere) than those of palustris. 



The accompanying drawings done with camera lucida, will show 

 the differences in both sexes between what appear to me to be two 

 good species. 



Explanation of Plate IV. 



A. 1-6. — Hydroporus palustris, L. — Various views of anterior tarsal claws of 



3 s x 200. 

 1-2. — The same pair of claws from opposite sides. 

 3-4. — Another pair of claws from opposite sides. 

 5-6. — Another pair of claws from opposite sides. 



B. 1. — Anterior tarsal claws of Hydroporus palustris x 200. 

 2. — Anterior tarsal claws of Hydroporus ineognitus x 200. 



C. 1. — Anterior tarsus of Hydroporus palustris <?x50. 

 2. — Anterior tarsus of Hydroporus palustris ? x 50. 

 3. — Anterior tarsus of Hydroporus ineognitus 3 x 50. 

 4. — Anterior tarsus of Hydroporus ineognitus ? x 50. 



5-6. — Ventral view of right foreleg and claws of Hydroporus ineognitus 

 (fig. 5x50; fig. 6x200). 



D. 1-6. — Hydroporus incognitos, Sharp. — Various views of anterior tarsal 



claws of c? s x 200. 

 3-4. — The same claws. 

 5-6. — Fig. 5, dorsal view, fig. 6, lateral view of the same pair of 



claws x 200. 



Hellinsia (Leioptilus) carphodactyla reinstated in the British list. 



By W. PURDEY. 



Among the " plume " ova first supplied to you were some which, 



at the time, I thought were those of Hellinsia osteodactylus. Upon 



examination at the end of the season, however, I found that the imagines 



taken were not that species, but in markings very much like Adaina 



