Contents of Volume XLVIII 



No. i. JANUARY, 1925. 



Bom \ i . J< -i i-ii II., AND ORR, PAI i. R. Respiratory Me- 



latmlitm I 



M'KV, I.. Y Occurrence of Rickettsia-like Micro- 



organisms in Adult "Locusts" (7V/'/ .vm/rc/;;/ Linn} 15 



( nil i), (\ M. ; ial Gradients in Ilydrozoa, VI 19 



SIMM K. I . I'. M) HUESTIS, R. K. Studies of Coat-Color 

 an. I in"! I' i ('mentation in Subspecijic Hybrids of r>ro- 



m . it us ;; 



. NI LY, < . J. Adaptive Changes i>: \>r . . . 56 



No. 2. Fi-:nRi\K\ , IMJ.S. 



Hoi>i\i , Jn-i IMI II. Physiology of the Orthoptcra 79 



Hi DINGTON, l\"i:l KT A. .-1 Suggestion as to I 



Thyroid (Hand Substances on Protoplasm in Cicncral . . . . 

 \i i -\, I'm KI M\V C. On the Occurrence and Food Habits of 



in Xew Jersey Inland Coastal ]\'dtcrs 92 



KI i"', 1\. Stud Microsporidia Parasitic in Mosquitos, 



V [12 



TURNER, C. L. .1 Mutation in the Moth-like Fly (Psychoda 



alternatin > <ind the Method of its Transmission 128 



1 1 \KKI^, KI .iN M n ( '.. Reversal of Function in a Species of 



139 



No. 3. MAK ii, 1925. 



HUMHIKI-.Y, K. K. .1 Mi ion of the I'^odele Testis Re- 

 sulting from Germ-cell Degeneration . . 145 



MKI 1 1 1 \i;i in K, J. K. An Apterous Mutation in Bruchus. 166 



FISHKR, \\". K. A->\ual Reproduction in the Starfish, Scle- 



raslcrias l~l 



C/iin !>. C. M. The Axial (.innHe/ils in Ilydrozoa, VII 176 



iii 



