464 APPENDIX. 



district as fusculus ; the former is described in Kuwert's monograph as 

 smaller than H. fusculus and always with plainer and brighter markings, 

 but the differences seem very slight, and I cannot decide, without 

 further material, whether we have both species in Britain : the 

 characters drawn from the colour of the sides of the thorax and of 

 the legs are plainly untrustworthy in these closely allied species : if 

 these two species are really distinct, I am inclined to think that all 

 the Isle of Wight specimens must be referred to pulchellus, and that 

 the single specimen above referred to from the London district may 

 prove to be fusculus ; our knowledge of the group is evidently by no 

 means exhausted, and it is very probable that several more of the 

 continental species may be eventually found in Britain. 



Cryptohypnus dermestoides, Herbst.,and C.qnadrig-uttatus, 



Lap. (tetrayrapJius, Germ.). On page 88, Vol. IV. the latter of these 

 species is regarded as a variety of the former : in a short paper, how- 

 ever, in the Entomologist's Monthly Magazine, Vol. ii. (New Series) 

 p. 72, Dr. Horn points out the specific diflerences as follows : 



First veutral segment with a small tubercle between the 

 coxa, and the anterior tibiae dilated, in the male . . C. QTJADRIGUTTATUS. 



First ventral segment convex between the coxae and 

 fimbriate posteriorly, ami the anterior tibiso dilated, in 

 the male C. DEBMESTOIDES. 



The first ventral segment of C. dermestoides (male) is somewhat 

 gibbous between the coxte and raised to a level with them, and the 

 fimbrise are directed backwards ; while in C. quadriguttatus (male) the 

 first ventral segment is rather flat between the cox3, and has a round 

 pubescent spot. 



Dr. Horn further remarks that in none of the North American 

 QryptoJiypni are the male front tibioe dilated, as they are in these two 

 European species. 



Mr. Champion adds the following note to Dr. Horn's article : 



" C. dermestoides, Herbst.,and C. quadriguttatus, Lap. (=tetragraplius, 

 Germ.), considered by most recent authors as varieties of one species, 

 thus prove to be distinct. They occur together in various northern 

 localities in Britain, as Kannoch, Braemar, Scarborough, etc. ; in 

 Scotland C. dermestoides is, perhaps, the commoner of the two, while 

 at Scarborough, C. quadriguttatus is much more abundant than C. 

 dermestoides. A large number of specimens collected by Mr. J. J. Walker 

 in Italy, at Civita Vecchia, all belong to C. quadriguttatus, none of 

 these showing the slightest variation in the elytra! spots. It may be 

 safely assumed that all British specimens with distinct spots are quadri- 

 quttatus ; while those Avhich are unspotted or merely have the 

 'shoulders and an indeterminate patch near the apex of each elytron a 

 little lighter are, with rare exceptions, dermestoides. In some examples 

 of G. quadriguttatus the basal or the apical spot is obsolete. Many of 



