1920] Chamlerlin: New Myriopods Collected in India 395 



7. Prionopeltis atopus, sp. nov. 



Description. — A lighter, more brownish species than the preceding 

 one, with keels entirely fulvous, the light color extending along both 

 anterior and caudal borders instead of being confined to the caudo- 

 lateral region of keel. 



The sculpturing of dorsum the same in general excepting at caudal 

 end. Here, in the type, the nineteenth and anal segments are partially 

 retracted within the eighteenth ; but as only one specimen has been 

 observed, this feature may be an artifact or an abnormality. The anal 

 scutum is more distinctly granular. Cauda more rounded at caudal 

 end, not gently decurved as in kelaarti but straight or rather slightly 

 upraised at end. Anal valves granular, and each of its setigerous 

 tubercles bearing three setae instead of two. Keels elevated as in indus. 



Fifth sternite in male with the usual process ; its anterior tubercles 

 more prominent. Third joints of legs of fifth and sixth segments with 

 rounded proximal tubercles or processes. 



Differing in having no pleural keels on fourth and fifth segments. 

 The usual pegs at bases of legs. 



The mesal hook of male gonopods broader, distally more clavate, 

 with its distocaudal angle finely acutely produced, the end in outline 

 from ventral view not unlike a bird's head. Style crossing spinous 

 process, not running nearly parallel with it. Gonopods obviously 

 larger than in indus (pi. 28, fig. 27). A more robust species than 

 indus. 



Measurements. — Length, 53 mm.; width, 5 mm. 



Locality. — India : Coonoor. One male. 



SPIROBOLOIDEA 

 Titsonobolus, gen. nov. 



Description. — Resembles Trachelomegalus in the large size of the 

 collum which similarly extends forward over the base of the head, 

 reaching or a little overlapping the posterior borders of eyes. Collum 

 laterally narrowed, extending low down free from the head and over 

 the antennae. Unlike Trachelomegalus, having the second tergite also 

 produced ventrad, in the genotype below level of the collum and below 

 level of sternum. Eyes widely separated, twice their longer diameter 

 or more apart. Cauda much exceeding the anal valves, strongly 

 curved downward. Spiracles in front of sutures. 



Characters of male not known. 



Genotype. — T. uncopygus, sp. nov. 



