238 A 3Ionogra2jh of Scytonotus. 



Scytoiiotus digitatus Porat. 

 Nya Bidrag till Skand. Halfoas Myriap. (1889) i^ 24. 



This species was described from a conservatory in Sweden and 

 is, no doubt, exotic and probabl>^ tropical. Its characters are 

 certainly verj^ remarkably different from those of Scytonotus, and 

 from any other described genus. We suggest that it be considered 

 the type of a new genus, under the name Poratia. The digitatel}' 

 lobed carina are a character sufflcientl}' bizarre, but equally im- 

 portant as a means of distinguishing it from Scytonotus is the 

 fact that the 5th antennal joint is longest and thickest, followed 

 in leugth by the 6th, 2d, 4th, 3d, and 7th, aud that the 2d joint of 

 the legs is nearly as long as the 6th. 



Scytouotws grauulatii*>$ (Say) Bollman. 



Polydesmus gramilatus Say. 



Scytonotus scabricollis C. L. Koch, — System der Myriapoden, p. 130. — 

 Die Myriapoden II, p. 41, fig. 1G4. 



Scytonotus Icevicollis C. L. Koch, — System der ]Myriapoden, p. 131. — Die 

 Myriapoden II, p. 43, fig. 1G5. 



Scytonotus granulatus Bollman, — Entomologica Americana III, ]). 46. 



There can be little doubt that Polydesmus granulatus Say is 

 the animal described b3" C. L. Koch as Scytonotus scahricoUis. 

 Say's description includes several statements which could not 

 apply to an}^ other known North American diplopod : 



" Body with short hair, pale tinged with red beneath, and feet 

 paler; head dusky with short dense hairs; labrum whitish; seg- 

 ments somewhat convex, granulated, granules rounded, or longi- 

 tudinally oblong-oval, elevated, obtuse, approximate and arranged 

 trans versel}'^ in about four nearlv regular series, anterior segment 

 transversel}' oval, narrower than the head or second segment; 

 stigmata elevated. 



" Found in Penns3dvania." 



Especially diagnostic are the number and arrangement of the 

 granules and the location of the repugnatorial pores. Like most 

 of the old descriptions, the above is very meagre and a more de- 

 tailed one will be in place. 



Body 5-6 times as long as broad (fig. 65), subfusiform, narrowed very 

 gradually cephalad, very abruptly caudad, sub-depressed, above moder- 

 ately convex. 



