162 SUMMARY OF CUERENT RESEARCHES RELATING TO 



New Anguillulid.* — J. G. de Man describes Odontopharynx longi- 

 cauda g. et sp. n., a new Anguillulid from hyacinth bulbs. It appears 

 to be related to Mononchus and Diplogaster. As in Mononchus^ the 

 month-cavitj contains a large dorsal tooth, besides which there are 

 several much smaller teeth, partly in the lateral median line and partly 

 sub-ventral. Most characteristic is the structure of the oesophagus, 

 which is divided into two distinct parts. The anterior portion is cylin- 

 drical, with a much thickened chitinous intima, which is continued 

 almost to the posterior end of this region. The wall, as in Mononchus^ 

 is very muscular. The posterior portion is anteriorly much narrower 

 than tlie former portion, but it gradually increases in width without 

 forming a bulbus. In the posterior portion the chitinous intima of the 

 lumen is not thickened, and the wall is not muscular. 



Worm-nodules in Cattle. j— J. A. Gilruth and Georgina Sweet 

 discuss the nodules of Onchocerca gihsoni^ which occur in the muscles of 

 the breast and thigh in cattle. The nodules always contained either a 

 fully developed female (and the male beside her) liberating living larvae,, 

 or degenerated parasites. In other words, no immature parasite has been 

 found in a nodule. It seems that neither direct contact nor the inter- 

 mediation of lice {Hsematopijiiis vituli or H. eurysternus or Trichodectes 

 scalaris), the suspected intermediary hosts, can act as a means of trans- 

 mission of the worm-nodule parasite. There is every probability that 

 the intermediary host is a fly. 



Minute Anatomy of Dog-filariae.J — Saisawa deals with the minute 

 structure of what was probably Dirofilaria immitis, from the dog, with 

 especial reference to the subcuticular cells, the excretory pore and 

 excretory cell, the elements which Rodenwaldt calls G-cells, the anal 

 pore, and the like. Saisawa followed the further history of the Micro- 

 filariae within the mosquito, and found, for instance, that there was no 

 reason to regard the G-cells as primordial gonad cells. 



Nematode of the Dromedary.§— E. Maupas and L. G Seurat give 

 an account of Nematodirus muritanicus sp. n., which lives along with 

 N.fiUcoUis in the small intestine of the dromedary. The two species 

 are closely related, as may be seen from the facts that the ovijector is 

 composed of the same number of cells, and that the spines are similar 

 and united by a lamella for part of their length. But the dimensions of 

 all the elements are larger in the new species, and this is especially note- 

 worthy as regards the vestibule and the spines. 



Platyhelminthes. 



New Type of Temnocephala.|l — Nelson Annandale describes Cari- 

 dinicola indica g. et. sp. n., an interesting symbiotic flatvvorm found on 

 fresh-water prawns {Garidina propinqua and C. sumatrensis) in the 



* Zool. Jahrl)., xxxiii. (1912) pp. 637-42 (1 pL). 



t Proc. R. Soc. Victoria, xxv. (1912) pp. 23-30. 



X Centralbl. Bakt. Parasitenk.,lxvii. (1912) pp. 68-75 (2 pis.). 



§ C.R. Soc. Biol. Paris, Ixxiii. (1912) pp. 628-32 (9 figs.). 



II Records Indian Museum, vii. (1912) pp. 24.3-52 (2 figs,). 



