SO By a ago Ae A mh aid eK Pn td EAN aie AS E G + $ > Mirae. v Ne n A OT a ONE ae ad 
toh PE Bae ; i ; “i 5 f C ARNEE 
5 ; ak ‘ j F j ý ba F, į F X j “ ‘ 4 K at > 
f k j $ i ~ { ; * ee 
348 Track of a Cyclone which passed over [April, 
have the antenne alike in both sexes, but in Philopteridz the 
third segment of the antennz of the male has a lateral process, 
sometimes so large as to make the antenna resemble a lobster’s 
claw. Nitsch states that it is for holding the female. 
Eyes—These lie on the margin of the under surface of the 
head behind the antenne. Authors have hitherto ascribed a sin- 
' gle pair ot eyes to all Mallophaga. But in all Philopterid genera 
examined (Goniodes, Docophorus, Lipeu- 
rus, Nirmus) the author found a single 
pair, and in all Liotheid genera (Tetroph- 
\\ thalmus, Lamobothrium, Menopon, 
WA Trinotum and Colpocephalum) he found 
Ii] two pairs of stemmata. If this charac- 
~ ter holds good for the remaining genera 
Fic. 10,—Eye of Lemoboth- it will still further separate the two chief 
pa seen on cross-section of divisions of the Mallophaga. 
The eyes of Mallophaga are simple, 
provided with a lens-shaped thickening of the cuticle. In young 
~ specimens the eye has no pigment, but in older specimens it has 
| pigmented retinal cells. The eye of Lemobothrium, examined 
by means of sections, has, under the chitin-thickening (Fig. 10 D), 
twenty-four pigmented retinal-cells (7), clavate and nucleated with 
nucleoli, merging gradually into the pigmented optic nerve (on). 
Each eye is directly innervated from the precesophageal ganglion. 
The hypodermal cells are interposed between the lens and the 
retinal-cells, as cubic ‚cells in old specimens, but as a hyaline 
-= body consisting of cylindrical cells in young or recently molted 
-. specimens. There are no rhabdites in the eyes. The eyes of 
= Mallophaga resembles those of Phryganea grandis, as described 
3 . by Grenacher. . : 
10; 
_ TRACK OF A CYCLONE WHICH PASSED OVER 
=~ ` WESTERN INDIANA MORE THAN THREE 
HUNDRED YEARS AGO. 
* 
<8 : BY JNO. T. CAMPBELL. 
: F April (1885) I was surveying in the west-central part of -o 
_ M Parke county, Indiana. On the south side of Section 16, A 
Township 15 north, of Range 8 west, I noticed that the tree 
graves were very numerous, there being one to every square rod 
