102 Lis. 
COLEOPTERA. 
plants, a habit believed to be not shared by any Curculio, beetle, or 
(indeed) insect. The author repeats his arguments in favour of separat- 
ing Platypus as another equivalent group, and assigns the name 
Coleoptera pcedognathica (Imhoff) to the three divisions collectively, 
on account of the similarity of the cibarian organs in the larva and 
imago. 
After a general description of the structure of the Tomicides, the 
author endorses the opinions of Chapuis, Perris, and Thomson, as 
opposed to Ratzeburg, in his definition of the sexes. The male is 
smaller, with no teeth (or lesser armature) at the declivous apex of the 
elytra, longer pubescence, and impressed forehead (a confusion being 
suggested in this respect as regards Lindemann’s observations). The 
great rarity of the male in some species is explained by the fact of most 
of them copulating in the furrows in which they are developed, before 
taking to the wing — the male never leaving the burrow, but dying in 
it. The different kinds of galleries are specified. In discussing the 
question as to the beetles attacking sound or diseased trees, it is pointed 
out that the juice is more essential to them than the wood; and that pre- 
liminary tappings (as it were) are very frequently made by them with the 
view of testing the existence of the sap in sound trees, which thus become 
to a certain extent diseased, and are then finally attacked. 
Dichotomous tables of genera and species are given. Aphanarthrum 
pusillum, Woll., referred to CrypturguSy is renamed wollastoni (nec 
pusilluSy Gyll.) ; Cryphalus picece var. n. numidicuSy p. 124, Attica ; C. 
tilice, Thoms., = al>ietis, Ratz. ; Hypothenemus eruditus, Westw., and 
Bostrychus boildieui, Perroud, ? = Stephanoderes areccce, Horn [if so, 
eruditus stands, being eight years older than areccce] ; Bostrychus tachy- 
graphus, Sahib., and ratzehurgi, Kol., = Xyleborus dispaVy F., X. 
carinipennis. Eich., = oblique-cauday Mots., ex. typ. ; X. affiniSy Eich., is 
of very wide distribution ; X. hraatziy Eich., var. n. philippinensis, p. 374, 
Philippine Islands. The plates contain figures of the mouth organs, 
antennae, and legs of various species. 
BlastophaguSy Eich., is wrongly suppressed as a synonym of Hylurgus 
by Weise, having a different mentum and prosternum ; the name being 
preoccupied in the Chalcididccy is altered to Myelophilus ; Eichhoff, S. E. Z. 
xxxix. pp. 399 & 400. 
Xyleborus plagiatas and sparsusy Lee., referred to Pityophihorus ; X. 
hamatuSy Lee., = carinulatus, Lee., $ ; Bostrychus concinnuSy Mann., is a 
Xylocleptes ; Scolytus rugulosus in New York. Le Conte, P. Am. Phil. Soc. 
xvii. pp. 623-626. 
Xyleborus dispar and saxeseni. G. Schoch, MT. schw. ent. Ges. v. 
p. 367, remarks upon the biological relations of these two species, which 
according to him are always associated, the latter being also the only 
known Scolytid found both in deciduous and coniferous trees. [In 
England, at all events, X. saxeseni is found by itself, X. dispar being of 
the greatest rarity.] 
Dryoccetes villosus, F. ; the $ attributed to this species by Ratzeburg, 
