ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 543 



and bearing- a very minute supplementary branch in the male ; there is 

 a pair of lenticular eyes. The form may turn out to be only a stage, 

 but several precisely similar specimens were obtained. Descriptions are 

 given of new speciesof Acartia, Gentropages, Temora, Galanoides, Corgcseus, 

 and Evadne. 



Annulata. 



Enigrnatical Eunicid.* — P. Fauvel describes a small Polychaete, 

 Iphitime cuenoti sp. n., found by Cuenot on a hydroid fixed to the back 

 of a young Maia squinado at Arcachon. It was 12 mm. in length by 

 3 mm. in breadth (including the parapodia) and had when living a 

 curious resemblance to a JSTudibranch. It has the head and appendages 

 of Ophyotrocha, the setae of Staurocephalus, the parapodia and cirri of 

 Holla, the unbranched branchiae of Eunice, and a quite special maxillary 

 apparatus. It is to be placed in beside Iphitime doderleinii Marenzeller, 

 a parasite of the branchial region of the giant Macrocheira Tcsemferi of 

 Japan. There is a rounded prostomium with two rudimentary processes ; 

 the parapoda are uniramose ; there are large foliaceous dorsal cirri ; the 

 branchiae are simple and restricted to a few segments ; there are two 

 kinds of cirri ; there is a rounded pygidium with two short urites ; and 

 there is a unique jaw apparatus. 



Neurofibrils of Leech. f — G. Ascoli describes networks of fibrils 

 within the giant-fibres of Hirudinea. The networks coalesce to form 

 several strand-like fibrils. According to Cajal's school there are bundles 

 of parallel fibrils. Another point emphasized by Ascoli is, that in the 

 course of the cell-processes there is a neurofibrillar lattice-work inde- 

 pendent of the cellular reticulum. Separable neurofibrillar apparatus 

 may be distinguished in the coalescence of the latticed processes from 

 several cells. 



Nematoh.elminth.es. 



New Human Parasite. $ — Kotaro Jimbo describes Trichostrongylus 

 orientalis sp. n., a minute Nematode from the duodenum of Japanese. 

 In some cases it was found in Ithe jejunum and stomach. The male 

 varies from 3 ■ 8-4 ■ 8 mm., the females from 4 ■ 9-6 ■ 7 ; the colour varies 

 from greyish-white to nil. The distinctiveness of the species rests 

 mainly on the characters of the spines, the gubernaculum, and the 

 bursal ribs in the male, and of the post-anal portion of the body and 

 the ovijector in the female. The parasites do not seem to do any harm. 



Occurrence of Oxyuris vermiformis in the Human Vermiform 

 Appendix.§— J. A. Innes and A. E. Campbell publish the results of an 

 examination of 100 unselected appendices. The object of the investiga- 

 tion was to determine as accurately as possible the number which con- 

 tained intestinal parasites. They found that the percentage infected 



* Arch. Zool. Exper., liii. (1913) Notes et Revue, No. 2 pp. 34-7 (1 fig.). 

 t Arch. Mikr. Anat., lxxxii. (1913) pp. 414-25 (10 figs.). 

 J Annot. Zool. Japon., viii. (1914) pp. 459-65 (1 pi.). 

 § Parasitology, vii. (]914) pp. 189-200. 



