Anaccena.] nYDKoniiLiD.E. 227 



liead dark with a large testaceous mark on each side in front of eyes ; 

 thorax testaceous witli the disc more or less broadly dark ; elytra tes- 

 taceous with indistinct dark markings ; legs testaceous ; in form it is 

 more widely oval than A. luiibata. . L. l|-2i mm. 



Pniub and ditches ; local, and as a rule not common ; London district, rather fre- 

 quent, Lee, Wimbledon, Woking, &c. ; Stonj- Stratford ; Southsea ; Deal ; not re- 

 corded from the north of Eut^laud or from Scotland. 



HHIiOCXXARES, :\rulsant. 



This genus comprises a moderate number of species, two or three 

 of which arc found in Europe ; they are distinguished by the fact that 

 the elytra have no trace of a sutural stria, and that the last joint of the 

 anteunai is plainly shorter than the penultimate. 



The larva of H. lividus is fully described and figured by Cussac (Ann. Fr. 1852, 

 J). 62J-, PI. 13): it very closely resembles that of Philhydrus ; the female beetle, un- 

 like those belonging to the allied genera, carries her eggs iu a little bag attached to 

 tiie abdomen ; according to IMulsant she becomes more unwilling to abandon her eggs, 

 if disturbed, as the time of hatcliing approaches, althougli at first slu' will let them 

 go at tlie approach of danger; the insect appears either to attach the egg-bag to 

 an aquatic phint shortly bef'on' hatcliing, or, if there is none at baud, to turn itself 

 on its back at the surface of the water, and there remain until the young larvffi have 

 emerged. 



Two species are found in Britain, the second of which is considered 

 by many authors to be only a race or variety. 



1. Punctuation fine ; last joint of maxillary palpi uni- 



colorous or slightly dusky at extreme apex oidy .... II. lividus, Forst. 



2. Punctuation coarser ; last joint of maxillary palpi dis- 

 tinctly and rather broadly black at ape.ic II. rC^■C^ATCS, Sharp. 



H. lividus, Forst. Oblong-oval, rather elongate, not very convex ; 

 upper surface entirely testaceous, finely punctured ; maxillary palpi very 

 long ; thorax with anterior margin almost truncate, base not margined ; 

 elytra rather wider behind, without sutural stria, with traces of rows of 

 larger punctures ; underside pitchy, legs testaceous, femora darker and 

 strongly pubescent ; claws toothed at ba.se. L. 5-6 mm. 



Ponds, ditches, &c., both inland and near the coast ; local, but rather common and 

 widely distributed as far north as Askham Bog, and Preston JIarslies, Lancashire ; 

 it docs not, however, occur in the extreme north of England or in Scotland, as far as is 

 at present known. 



K. punctatus, Sliarp. Very like the preceding but more strongly 

 ])Uiiclun.'d, with llic apex of the last joint of maxillary palpi rather l)roadly 

 bhick, and with stronger traces of larger punctures on the elytra ; the 

 general colour is darker, and the liead is often almost black; the legs 

 also are much redder. L. 5-G mm. 



Ponds, ditches, &c. ; local ; common in the London distiict generally, and also in 

 the New Forest; Kcpton, Burton-on-Trcnt ; Lancaster; in all j>robabiiity wiilely distri- 

 buted throughout the midland and southern districts: iu Scotland it is very local, 



Q 2 



