544 Records of the Indian Museum. [Vol. VIII, 



differs from all of these in the form of the cephalon, maxillipedes, 

 and uropoda. The undersides of the inner margins of the ist and 

 2nd segments of the mesosome are devoid of teeth or grooves, a 

 character present in many genera the species of which are capable 

 of rolling themselves up into a ball. 



Rotungus pictus, n. sp. 



(PL xHx, figs, r — lo). 



Body oblong oval, strongly convex, smooth. Cephalon (figs. 

 I and 2) small, convex, partly surrounded by ist mesosomatic 

 segment, lateral and median lobes well developed; epistoma with 

 median vertical ridge. Eyes large, situated dorsally. Antennae 

 (fig. 3) slender, 4th and 5th joints elongated, setae short and 

 thick ; flagellum 2-jointed, ist joint short, expanded distally, 2nd 

 nearly three times as long, terminating in a style. First maxillae 

 (fig. 4) with outer lobe terminating in four strong curved spines, 

 and five smaller ones, inner lobe narrow, flat, with two setaceous 

 spines on the inner border. Segments of the mesosome strongly'' 

 convex, ist broadly expanded laterally and partly surrounding the 

 cephalon (fig. 5), lateral plates of 2nd to 5th segments excavate, 6th 

 and 7th almost truncate, posterior angles produced backwards. 

 Maxillipedes (fig. 6) with small lobes, outer lobe terminates 

 in a multispinous process and five fine curved spines, the inner 

 lobe has two very small spines at each side and two larger ones on 

 the ventral surface. Uropoda (fig. 9) extending beyond the telson, 

 basal plate convex dorsally and flattened ventrally, broader an- 

 teriorly than posteriorly ; exopodite cuniform, sparsely setaceous, 

 articulating at the posterior margin of the basal plate, endopodite 

 larger than exopodite, rudder-shaped, setae long and prominent. 

 Telson (fig. 10) elongated, roughly triangular, posterior margin 

 truncate, anteriorly broader than the length. Length 5*5 mm. 

 Colour (in alcohol) horny yellow anteriorly, mottled brown pos- 

 teriorly. 



Habitat. — Kobo, Abor country, 400 ft., 30-xi — S-xii-igii. 

 Under bark. No. 8084/10 (5. W. Kemp). 



Type. — In the collection of the Indian Museum. 



At present this interesting species stands out alone, sepa- 

 rated from any known Indian genus by many striking characters. 

 In the form of the cephalon and mesosomatic segments there is a 

 slight resemblance to certain species of Mesarmadillo, Dollf. In 

 only one specimen was there an antennule, which unfortunately 

 was lost, the proximal joint of which was very broad. The flagel- 

 lum of the antenna is very distinct in form. Apart from the small 

 lobes of the maxillipedes the mouth-parts present no points of 

 special interest. The thoracic appendages are stoutly built and 

 setaceous ; the setae on the 2nd appendage are of four kinds, viz. 

 short stout spines (fig. 8a), longer curved spines (6), still longer 

 curved spines with a spinous collar about two-thirds from the 

 base, and then a plain curved spine terminally (c), and much 



