174 



DR. A. D. IMMS ON 



is a single pad, as is usual among Embiidae (text-fig. 3). The arolia on both joints of 

 the tarsi are completely glabrous. The tarsal claws (PI. 38. fig. 13) of each pair of legs 

 do not differ from one another in any essential points. Each claw is broad at tbe base, 

 but narrows and becomes acuminate at its distal half. It carries a stiff obliquely- 

 directed seta, which arises from the basal portion of the claw. 



Text-fig. 3. 



The right hind leg of the male, viewed i'rom the outer aspect, tr. 1 and tr. 2, arolia or ventral pads of the first 

 tarsal joint (" metatarsus ") ; tr, 3, arolium of the second tarsal joint, x circa 22. (From a preparation 

 mounted in Canada balsam.) (Westwood Bequest.) 



The Abdomen consists of ten terga, of which the first eight are almost glabrous. The 

 pleura and the 9th and 10th terga are provided with brownish hairs. The first seven terga 

 are subequal, the eighth is shorter than those of any of the preceding segments, and the 

 ninth is asymmetrical and the smallest of all : it appears as if compressed between the 

 8th and 10th segments, and partly distorted in consequence, so that the right portion 

 appears somewhat larger than the left (PL 37. fig. 3, tg. 9 ). The tenth tergum is 

 completely divided into right and left plates, the right being larger than the left. The 

 left plate is produced posteriorly into a stout curved process (pr.tg. 10 in text-fig. 4) ; 

 the process of the right plate is only represented by a minute papilla (r.p.). The left- 

 hand portion of the right plate (m.p. in text-fig. 1) is marked off by means of a suture 

 from the rest of the plate. Yentrally, the abdomen consists of nine evident sterna. The 

 first sternum is extremely small and firmly soldered to the posterior margin of the meta- 

 thorax. The 2nd-8th sterna differ but little among themselves, the 2nd, 3rd, and 4th 

 being somewhat longer than the succeeding sterna. The ninth sternum is the largest of 

 all ; it is asymmetrical, and forms the subgenital plate ; it appears to be formed by the 

 fusion together of the ninth sternum and the right plate of the tenth sternum. Whether 



