igii.] T. R. R. Stebbing : Indian I sopods. i8l 



1879. Alitropus typus, Schiodte and Meinert, Naturhist. Tidsskr., 

 ser. 3, vol. xii, p. 404, pi. xiii, figs. 10-12. 



1892. Rocinela typus, Max Weber, Zool. Ergebn. einer Reise in 

 Niederl. Ost-Ind., vol. ii, p. 553. 



Of the two specimens which I refer to this species one mea- 

 sured about 14 X 6'5 mm., the other was only 6 mm. long, the front 

 part much narrower than the remainder, and the fifth peraeopod 

 shorter than the fourth. 



lyocality — The label states that they were obtained by Dr. 

 Annandale, 7-xi-o8, from Shasthancottah Lake, 12 miles N. N. E. 

 of Ouilon, Travancore. 



Family SPHAEROMIDAB. 



1910. S pha er omidae, Stehhing, " Sonth. African Crustacea," Part 

 5, in Annals of the S. A. Mus., vol. vi, p. 426. 



Under the above reference the history of this long-standing 

 and much discussed family and its leading genus Sphaeroma can 

 be traced. 



Gen. Sphaeroma, Bosc. 

 1802. Sphaeroma, Bosc, Hist. Nat. Crust., vol. ii, p. 49. 



Sphaeroma annandalei , sp. nov. 

 (Plate X.) 



Superficially this species bears so great a resemblance to 

 Sphaeroma walkeri, Stebbing, that I was at first tempted to regard 

 it as at most an interesting variety. Such differences as might 

 be detected by minute comparison of the respective antennae, 

 limbs, pleopods and uropods, could not easily be insisted on as of 

 specific importance. Even the tuber culation of the dorsal surface, 

 though distinctive, might be regarded as a very variable feature. 

 In various points it also agrees with Sphaeroma terebrans, Bate. 

 But a thorough examination has shown that the three forms cannot 

 possibly be confounded together. 



In the new species distinct tuberculation begins on the 

 seventh segment of the peraeon. On the composite anterior por- 

 tion of the pleon there are two strongly marked submedian tuber- 

 cles, and on the telsonic portion there are two submedian pairs 

 in succession followed by a single median tubercle and flanked 

 on either side by a longitudinal row of three tubercles, besides 

 some others more laterall}^ placed. The telsonic apex is obtusely 

 narrowed, not quite so much as in 5. terebrans, but far more 

 than can be truthfully shown in a dorsal view of the undissected 

 specimen. In 5. walkeri the apical margin is broadly rounded. 



The first antennae have an elongate slender third joint, to 

 which succeed eight to ten ioints of which the first is the longest. 



