122 Psyche [Decembe'' 



m. t. = Median tooth. 



o. b. 1. = Outer barbated lobes. 



r. m. = Relaxing muscle. 

 Plate VI. Photomicrographs of the contents of the digestive 



canal of cricket. Figs. 1, 2, 3 crop, proventriculus and 



mesenteron of cricket fed on miscellaneous food. Fig. 4, 



crop of cricket fed on dead insects. 

 Plate VII. Fig. 1 mesenteron of cricket fed on dead insects. 



Figs. 2, 3, 4 crop, proventriculus and mesenteron of 



cricket fed on wheat grains. 



NEW POLYDESMOID DIPLOPODS FROM TENNESSEE 

 AND MISSISSIPPI. 



By Ralph V. Chamberlin, 

 Museum of Comparative Zoology. 



Of the following underscribed species of millipedes one was 

 collected in Mississippi at Agricultural College by Mr. J. W. Bailey, 

 while the other four, three of them pertaining to a new genus, were 

 taken by Professor R. Thaxter at Burbank in eastern Tennessee. 

 The new genus is segregated from Fontaria sens. lat. 



Fontaria pela sp. nov. 



This species when in full color is above deep shining black with 

 the caudal corners of the carinse and the tip of the last tergite in 

 life apparently bright red, fading in alcohol to brown or orange. 

 There may or may not be a narrow stripe of the same bright color 

 across the anterior border of the first tergite. The lateral region 

 of each somite is in the main reddish or orange brown with a black 

 stripe down the caudal portion from carina to legs, and a less dis- 

 tinct dark stripe in some along the anterior border as well. The 

 antennae are somewhat chestnut and the legs are brown. 



The body is proportionately rather slender. It is parallel-sided 

 excepting at the ends which aie narrowed. The lateral carinse are 

 moderate in size; the caudal margins of the anterior ones are bent 

 forward, those of the middle region less so, and those of the posterior 

 ones first straight and then bent caudad, the posterior angles of the 



