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 fuseulus; 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.quadriguttatus, 
Lap. (tetragraphus, 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 differences as follows :— 
First ventral segment with a small tubercle between the 
coxa, and the anterior tibize dilated, in the male . . C, QUADRIGUTYATUS, 
First ventral segment convex between the coxa and 
fimbriate posteriorly, and the anterior tibize dilated, in 
Tinley Yoho ooo 6 G WS) 6 ae 
The first ventral segment of C. dermestoides (male) is somewhat 
cibbous between the cox and raised to a level with them, and the 
fimbrie are directed backwards ; while in C. guadriguttatus (male) the 
first ventral segment is rather flat between the coxe, and has a round 
pubescent spot. 
Dr. Horn further remarks that in none of the North American 
Cryptohypni are the male front tibie dilated, as they are in these two 
European species. 
Mr. Champion adds the following note to Dr, Horn’s article :— 
“ O, dermestoides, Herbst.,and C. guadriqguttatus, Lap. (=tetragraphus, 
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 Rannoch, Braemar, Scarborough, etc.; in 
Seotland C. dermestoides is, perhaps, the commoner of the two, while 
at Scarborough, C. quadriguttatus is much more abundant than C. 
dermestvides, 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 elytral spots. It may be 
safely assumed that all British specimens with distinct spots are guadri- 
guttatus ; while those which 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 C. quadriguttatus the basal or the apical spot is obsolete. Many of 
C. DERMESTOIDES. 
