30 
described. The latter consist of a large 
stomach with a variable number of coeca, 
—5 in Nesaea, 11 in Hydrachna, 34 in 
Eylais. All these coeca communicate with 
each other, and are clothed with large, 
brown cells, numbers of which also occur 
in the stomach, and represent the liver. 
The excretory organs are reduced in Hy- 
drachna to a single median sac, wider an- 
In WNesaea it divides into four 
short branches, but it is more complex in 
Eylais. The terminal portion in all tends 
downward and runs direct to the 
teriorly. 
anus. 
There is no rectum, the stomach ending 
A sort 
of fat body is found about the digestive 
organs. There are three sets of oral glands 
in Lylais which open by a common duct 
into the mouth. 
A paper! by the late Dr. Hermann Le- 
bert, Die Spinuen der Schweiz, Bau und 
Leben, &c., I have not been able to see. 
Dr. Batelli”” has studied the anatomy of 
the larva of Hristalis tenax. The exter- 
nal tube of the long tail is regarded as a 
modified segment, which is shown by the 
presence of the lateral papillae, each with 
its long hair, as occurs in the other body 
segments. The retraction of the internal 
tube is by two muscles inserted at its supe- 
riore xtre nity, 
blindly, according to Croneberg. 
where there are some gi- 
gantic cells with large nuclei, having in 
the interior, as a product of elaboration, a 
long twisted filament. Connected with the 
two tracheae are two air sacs almost the 
Neu Denkschr. d. allg. Schweiz. Ges. f. Na- 
turw., v. 28. 
Sohn. 
12 Soc. Toscan. di Sci. Nat., Proc. Verb., Nov. 
1878. Shortened from notice in Ann. Mag. 
Nat. Hist., 5, v. 3, p. 94. 
Also separate, by Friedlander und 
PSYCHE. 
length of the body. The digestive appara- 
tus has in its vestibule two chitinous plates. 
In the pharynx, besides the two jaws, are 
eight peculiar beards, consisting of two se- 
ries of divaricated barbules. The salivary 
ducts are lined with a spiral thread, as is 
often the case. The chylific stomach is 
preceded by four ventricular glands, and 
there are four Malpighian tubes. The anal 
glands contain a great quantity of urates, 
and are composed of a straight part and 
another folded back. Besides the supra- 
and sub- oesophageal ganglia are two inter - 
mediate ones connected by means of a pe- 
duncle to the lateral commisure. The fol- 
lowing ganglia are united. 
Mr. Carl Gissler’® has described the 
anatomy of the once rare Amblychilacyl- 
indriformis, and figures parts of the ner- 
vous, digestive, and reproductive systems. 
No new results are to be noted. 
Turning now to special papers on the 
anatomy of particular organs or systems, 
we may first notice several on the dermal 
skeleton and its appendages. 
Led by Darwin’s difficulty in reconciling 
the great difference between the worker 
ants and the sexual individuals, Dr. H. 
Dewitz has studied the development of 
the legs, and especially of the wings in 
Formica rufa. His results, together with 
some additional observations on the devel- 
opment of the wings in lepidoptera, are 
best summed up by using nearly his own 
language: ‘‘ The ant-workers, like the 
13 Psyche, v. 2, p. 259. 
14 Zeitschr. wiss. Zool. v. 80, Suppl., p. 78; sup- 
plementary note, ‘bid, v. 31, p. 25; also Sitzungsb. 
Ges. Nat., Berlin, 1878, 122. 
