1885. ] Entomology. hs te 1003 
ing down of vertebrate tissue in the morbid process known as 
Mt + 
inflammation. 
larva contains within its body certain small white bodies disposed 
In pairs, and destined to form the head and thorax. The anterior 
Each muscular fiber or bundle of fibrils is derived from numer- 
ous embryonic cells plunged in a homogeneous intercellular sub- 
Stance. The cells become the muscular nuclei, while the inter- 
cellular tissue becomes fibrillose and contractile. 
The work ends in a detailed account of the development of the 
eyes. The eye of an insect consists of three regions : ; 
compound external facetted eye; (2) the ganglionic disc which 
forms a sort of screen between brain and eye; and (3) the optic 
ganglion which is the most external enlargement of the cerebral 
ganglion. M. Viallanes has traced the conducting nerve from an 
elementary eye or facet of the external eye, through the succes- 
sive ganglia to the interior of the brain itself ; and he shows that 
the germs of all the parts which enter into the visual apparatus exist 
in the young larva, enclosed within the brain, which they after- 
wards leave to take on their definitive form and occupy their des- 
tined position. 
Horn on THE AnisoTomint.—Dr. Horn remarks (Entomologica 
Americana, Vol. 1, No. 3, 1885): In the genus Scotocryptus the 
tarsi on all the feet are three-jointed. To this character Dr. 
Sharp attributes considerable value, and makes it the sole ground- 
work for the separation of a tribe which he places between the 
Anisotomini and Cholevini. From my own studies this numeri- 
cal reduction of the several joints is only another step in the 
direction so plainly indicated in the genera already known. In 
Order that the idea may be more readily grasped, the genera may 
