122 PSYCHE [June 



(descent) from the paraffine-removing xylol down to the stain, and the other for the 

 passage (ascent) from stain to the final xylol for clearing and preparing for the 

 balsam mounting. 



A host of changes can be rung on this simple, general procedure of clearing, 

 staining, and mounting ; but the beginner had better close his ears to these tunes 

 and his eyes to the fascinating pages of Lee's Vade-mecum and similar guides 

 wherein a dozen score of rainbow stains are described, and such refinements of 

 manipulation set forth as would take a decade to learn and would make not a nat 

 uralist, but a microscopist. We need to know the technic of histology only in so 

 far as it is necessary to know it, only in so far as we can use it, and only as a 

 means to an end : the end being the study of insect tissue, not that of the behavior 

 of triple stains. 



THE HEMIPTERA DESCRIBED BY PHILIP REESE UHLER. HI. 



BY SAMUEL HENSHAW, CAMBRIDGE, MASS. 



REDUIVIDAE. 



ACANTHODESMA, 47-2 7 I 



perarmata, 47-271 Japan, 



Apiomerus 



repletus, 16-329 Cal. 



CONORHINUS 



maximus, 44-286 L. Cal. 



protractus, 44-284 Cal.: San Diego ; L. Cal. : Santa Cruz?. 



rubidus, 44-285 L. Cal. : Cape San Lucas. 

 Harpactor 



ornatus, 47-269 Japan. 

 Oncerotrachelus 



conformis, 43-2 1 1 Grenada. 

 Orthometrops, 52-508 



decorata, 52-509 Md. : near Bladensburg ; Pa.; N. J.: near Madison. 



PiNDUS 



socius, 13-420 Id.: Snake river ; Kans. ; Dak.; Ariz. 



Prionidus, 21-23 == Arilus Hahn (1831). 



