384 PART II. SYSTEMATIC ACCOUNT 



five to sixteen pairs. The papillae bear small semilunar or oval yellowish 

 cuticular plaques with a hoop-like dark thickening along the front edge 

 (Fig. D152/ 7 ). The plaques are 23-25/* across. There are no plaques in the 

 front part of the metameric region. 



In the succeeding nonmetameric part of the metasoma there are scattered 

 papillae, also bearing plaques, which are distinguished only by a slight 

 transverse streaking of the hoops and by their slightly greater size (30/x 

 across) (Fig. D152G). 



There is a well-developed zone of thickened papillae, consisting of 9-15 

 very large conical papillae, pressed tightly together willy-nilly on the ventral 

 side of the trunk a little in front of the girdles (Fig. D152i7). Each papilla 

 bears an oval plaque on the tip with a streaky dark thickened rim in front of 

 which there is a very narrow clear border (Fig. D1527). They are 40-45ju. 

 across. 



The two contiguous girdles (Fig. ¥152 A) consist of broad protuberant 

 ridges on which the yellowish toothed platelets, 1 1-12/x long, are arranged for 

 the most part in a double row (Fig. F1522?). The front girdle has wide dorsal 

 and ventral gaps, but the posterior girdle is only broken on the ventral side. 

 There is a large conical ventral papilla with a tiny (not more than 5/u) trans- 

 parent cuticular plaque immediately behind the girdles (Fig. F152.4). The 

 toothed platelets of the girdle are much narrower at the front end. The 

 anterior part of the platelet, with small irregularly backward-pointing teeth, 

 is only half the breadth and a quarter of the length of the posterior section 

 (Fig. F152C). 



The postannular region of the trunk begins with the characteristic short 

 waist. It is very long but somewhat narrower than the rest of the trunk. On 

 its ventral side it bears metameric transverse rows of conical ventral papillae, 

 three or four in a row (Fig. F 152.4). The papillae bear plaques like oval 

 scales with a rod-like thickening (Fig. F152D). The diameter varies from 10 

 to 25/x, the larger plaques being on the median papillae of a row. 



The lengths of the various parts of the body, as measured in six individuals, 

 are as follows (mm) : 



Tentacles 10-5-17-2 



Fore-part of the body 1-3-1-8 



Metameric part of the trunk 1-6-3-0 



Entire preannular region up to 30-0 



In all the individuals examined only anterior parts of the postannular region 

 remained. The breadth of the mesosoma varied from 0-20 to 0-25 mm. 



