578 



THE AMERICAN NATURALIST 



[Vol. XLI 



distended and nearly fills the entire body cavity. It is probable 

 that this portion now acts merely as a reservoir and that its cells 

 have ceased secreting. 



5. The glands of Philippi are absent and it is probable that 

 the second thoracic portion performs the functions of these glands. 



6. The press is well developed. It differs from that of the 

 I.epidoptera in that the lateral pair of muscles is absent, and from 

 that of the Trichoptera in that there is^a single pair of dorsal 

 muscles rather than two distinct pairs. 



7. The product of the gland is a double thread as in the Lepidop- 

 tera and Trichoptera. 



CoRXELL University 

 Ithaca, N. Y. 



BIBLIOGRAPHY 



Berlese, Antonio. 



1907. Gli Insetti, loro orgaiiizzazione, sviluppo, abitudini e rapporti 

 coiruomo. 1907, vol. 1, pp. 521-523. 



BORDAS, L. 



1895. Appareil glandulaire drs Myineno[)teiv<. .1////. Sri. Nat. ZooL, 



1895, vol. 19, pp. r_'-2(). 

 Carriere and Bi-RGER. 



1897. Die EiitwickluMgs.uv^rhichic dcr M.-iunhi.^iH' (Chalicodoma 



muraria Fal.r.) iiii Ki. Nora Aria Anul. I.,n/,. Car., 1897, 



CHOLoDKnVSKV, X . 



1895. i:nrn,H.,t.,nnsrh.. Mis.Tll.'n, I. Vvhrv Aw Spinnariism ,ler 



1901. I'cb.T Ln Spiiniapparar drv Ly.la-Larvn. A/l>/r»,. Znl. /. 



1893. ( In Cviulouri, ;,! I )itlrirnr,.^ ii, Homologous Organs. 63rd Kept ^ 

 Ilrit. As... A'h-. .V/., lMt;5, pp. 81.3-816. 



