94 Mr. F. E. Beddavd on Earthworms from 



vast number of oesophageal glands in segments 6 and 7 evi- 

 dently metamorphosed nephridia. 



The above facts are sufficient to show that I am right in 

 identifying this species with Perichceta ijostlnima or at least 

 with P. affinis. The point that I wish to call attention to, 

 however, is the variability in number and in position of the 

 copulatory pouches, and this is a matter of some little import- 

 ance from the point of view of the determination of species. 



In the majority of specimens there were four pairs of 

 copulatory pouches with the distribution already recorded. 

 Another specimen fully mature had only three pairs, while in 

 a second equally mature there were four pairs, but the left- 

 hand pouch of the seventh segment was extremely small and 

 rudimentary. A third example, with well-developed clitellura 

 and testes, had no trace whatever (visible to the naked eye) of 

 copulatory pouches. These facts show that the copulatory 

 pouches are not necessarily developed pari passu with the 

 testes and clitellum ; the absence of these structures in Titanus 

 is possibly therefore only apparent. 



The most remarkable variation in the copulatory pouches 

 that I have observed in this species is illustrated in fig. 7 ; in 

 this example there were three copulatory pouches present, 

 situated in a row on the right hand side of the nerve- cord in 

 the eighth segment. 



Moniligaster Barwelli^ n. sp. (PL II. figs. 4-6.) 



I owe to the kindness of my friend Mr. H. E. Barwell, 

 who is at present resident in Manila, a number of examples of 

 a small earthworm from the neighbourhood of that town 

 which appear to belong to Perrier's genus Moniligaster. 



Moniligaster is at present only known by one species {M, 

 Deshayesi*)^ a native of Ceylon, which is characterized by 

 the apparent absence of a clitellum and by the very remark- 

 able disposition of the ossopliagus ; instead of being furnished 

 with but a single gizzard, as in the majority of earthworms, 

 or with two, as in Digaster, the ocsopliagus of Moniligaster 

 has five distinct gizzards, one situated in the sixth ring of the 

 body and separated by an interval from four other separate 

 gizzards, which are in close connexion with each other and 

 pass immediately into the intestine. 



Moniligaster Barwelli is a small earthworm not more than 

 1^ incli in length, judging at least from some twenty examples 

 which I have had the opportunity of examining ; the other 



* Nouv. Arch. d. Mus. t. viii. p. loO. 



