432 RECORD OF CURRENT RESEARCHES RELATING TO 



With regard to the anatomy of the Ostracoda, it may be pointed 

 out that the large organ described by Zenker as a " mncus gland " in 

 the male, is really a remarkable ejaculatory organ ; it lies in tho 

 channel of the vas deferens, and tho seminal duct leads into its 

 proximal end by a very narrow orifice. It consists chiefly of muscles 

 delicately striated ; they act by contracting the tube longitudinally, 

 and lie thickly one upon another, binding the chitinous rings of the 

 tube together. 



Vermes. 



Worm-fauna of Madeira.* — Dr. Langerhans continues his report 

 on this subject.f He now deals with the families of the Typhloscole- 

 cidse : — Ariciea : one new species, Aricia acustica ; Spiodea : of these, 

 Spio atlanticus, Polydora hamata, and P. armata are new ; Chaetoptera : 

 the only representative is a new species, SpiochcBtopterus madeirensis ; 

 Cirratulea, with Cirratulus viridis and Chcetozone macrophthalma for 

 new forms ; Capitellacea : Notomastus roseus, n. sp. ; Opheliacea and 

 Chlorhaemina, with a single known species respectively; Maldaniaa : 

 Axioihea cirrifera, n. sp. ; Ammocharidea ; Ampharetea, with a new 

 species, Ampharete minuta. In the Terebellacea, we have as new, 

 LecBna oculata, Polycirrus triglcmdula, and P. tenuisetis. The Serpu- 

 lacea are divided into two tribes, one {Sahellidce) without, and one 

 [Serpididce) with a thoracic membrane ; Sabella (Potamilla) rubra, 

 n. sp. Jasmineria is a new genus, allied to Diali/chone, but distin- 

 guished from it by the form of its abdominal uncini. J. caudata, 

 Chone arenicola, C. collaris, Oria Eimeri, Fabricia nigra are new species 

 of the Sabellid tribe ; Serpula concharum, n. sp. There is a key given 

 for the genera of the Sabellidse. Polygordius Sclmeideri, n. sp., is 

 described in an appendix to the paper, and in a review of his results 

 the author points out that he has found 153 Chaetopoda at Madeira, 

 of which 57, or about one-third, are new to science. Almost one-half 

 of the Madeiran Chaetopod fauna has been found in the Mediterranean, 

 and about a half of these, or 33, have been found on the oceanic coasts 

 of Europe ; of the 24 forms already known to science, and not 

 found in the Mediterranean, three are especially interesting as being 

 as yet only found in the West Indies ; three others have only been 

 found in more or less northern latitudes. On the whole, the wide 

 area over which it is possible for forms to range is now seen to be more 

 common than could before be supposed, and their modification at 

 different localities is extremely slight. 



Passing to the Chsetognatha, the author distinguishes two new 

 genera, so that we have (1) forms with a delicate body, two pairs of 

 accessory jaws, and two pairs of free lateral fins — Sagitta, with the 

 new species S. magna (4 cm. long) ; (2) forms with a delicate body, 

 one pair of accessory jaws, and one pair of free lateral fins — Krohnia 

 (non Krohnia Quatrefages), the species hamata of Mobius belongs 

 to this genus ; and (3) Spadella, with the body compressed, the sub- 

 cutaneous tissue greatly developed, a single lateral fin, and two pairs 



* 'Zeitschr. wiss. Zoo!.,' xxxiv. (1880) p. 87. 

 t See this Journal, iii. (I8S0) p. 84. 



