J20 Mr. F. I'altVnu-l^i-ownc on ihe 



Ireland I Imvc tsikon it in Antrim, Down, Armagli, West- 

 nicatli, aiul AVoxford. In Scotland 1 have not taken it my- 

 self, but 1 have seen specimens iVoni iStirlinfr, Lanark, and 

 Avr, while in Eiinlnnd I have seen specimens tVoni (Chester, 

 Devon N., I. of Wi.uht, Suflolk E., Kent E. and VV., and 

 Sussex E., and have taken it in (-ambs and Norfolk E., and 

 there are also records for Hereford, Hunts, and ? Suffolk W. 

 General Summary of Characters. — 



1. General form ; elytra ilucIi as in II. icehnckei, but the insect 

 is rather long. 



2. Thorax not mure than twice as long as broad, tlie sides more 

 or less straight. 



3. Thoracic strire usually very short and incurved. 



A.^ 4. Elytra with black lines seldom spreading into patches of colour 

 and u.*ually unbroken. 



I 5. Prosternum usually channelled throughout its length, but some- 

 times the groove is so wide and shallow that the edges are 



1 scarcely recognizable, and the prosternuni at first sight 



t appears flat. 



!1. Ant. tarsal claws unequal, similar to H. wehnckei. 

 2. Apical segment of ant. tarsus distinctly short (cf. U. i-ujicdlis 

 and wehnckei). 

 ii. Basal segment of median tarsus slightly excised on posterior side. 

 Q \ 1. Elytra usually without fine puncturation, but specimens occur 

 + • I in which this exists at the apex and even more extensively. 



With regard to aideagal characters, tlie left accessory lobe 

 is different from that of all the other British Haliplids ; it is 

 bluntly pointed and has a small tuft of hairs at the apex, and 

 about halfway down the dorsal face is a stron;^ brush of 

 hairs, which Edwards describes as " a large triangular toolh." 

 Tlie a^deagus itself has a very large hood, which conceals the 

 base of the " tongue " and also the whole of the saccular 

 region, which is well developed. The tongue itself is rather 

 peculiar in form, as will be seen in the figure. 



Il.ftthicoUis, Eiichson. 



The first mention of this as a British species was by 

 Edwards, who says that all the English specimens he saw 

 Avere females. Apparently his knowledge of this species 

 depends upon specimens from Eisleben, sent to him by 

 llerr Schulz of Hamburg, and he remarks that '' the genitalia 

 of the Eisleben male are similar to those of ruJicoUisJ^ 

 Further, he mentions that in the English specimens the 

 elytra are finely punctured on the apical half only, and sug- 

 gests that this had been overlooked byGerhardt and Welmcke, 

 " who speak of the elytra as without punctulation." Now 

 it struck me as extraordinary that these authors should have 

 been able to see such scul})ture in the females of rujicollis 



