260 Prof. J. C. Schiodte on the 



lata. Palpus labrum amplectens, triarticulatus, articulo 

 terminali inter antennas primi paris recepto, producto, 

 gracili, conico, apice spinoso. 



Maxillae prior es stiliformes, mala interiore et palpo carentes. 

 Mala exterior cum stipite concreta, in oriticiiim haustelli 

 eminens, falcata, acie bifariam dentata, dentibus produc- 

 tis, incui'vis, peracutis. 



Maxillm posteriores totffi contigute, malas maxillarum priorum 

 obvolventes, cardine stipiteque concretis, palpo nullo. 

 Malce discretee, breves, conicte, spisse verrucosa, orificium 

 haustelli supra palpos pedum maxillarium claudentes. 



Pedes maxillares prosterno maximo, fornicato, ad medium caput 

 provectij maxillas utriusque paris includentes, cardine 

 raagno, obliquo, laminato, triangulo, malis nullis. Stiin- 

 tes contigui, recti, clavati, fornicati, hjpostoma produc- 

 tum, medio carinatum utrinque explentes. Palpi biarti- 

 culati, latissimi, ^foliacei, fornicati, toti contigui, labia 

 inferiora haustelli formantes. 



Lingua laminata, nuda, biloba, lobis late rotundatis, introrsum 

 contiguis, rimam suctoriara includentibus. 



The Danish species of Anthura occurs rather near to the 

 coast in shallowish water, where usually no other fishes than 

 some species of Gohius and quite young flounders occur ; speci- 

 mens kept in captivity work about in the mud with serpentine 

 movements. It does not therefore seem probable that our 

 Anthura lives on fishes. At the same time, however, Spence 

 Bate and Westwood conclude their article on Anthura cari- 

 nata (ii. p. 162) with these words : — " The following vignette 

 represents some fishermen drawing in a seyne full of fish, on 

 most of which these Crustacea attach themselves." 



18. The study of the structure of the mouth in Amphipoda, 

 as in Crustacea generally, has hitherto been directed towards 

 the most pressingly necessary object — that is, the discovery of 

 reliable marks for the distinction of the various divisions of 

 these animals. For this purpose it has been sutficient to ex- 

 amine the outline and armature of the individual parts of the 

 mouth ; and in this direction many of the zoologists to Avhom we 

 owe our present knowledge of Amphipoda have made valuable 

 contributions, most of all Kroyer, whose diligent and consci- 

 entious investigations may be said to have opened a new era 

 in the special study of this order. But in spite of many iso- 

 lated attempts, this mode of working has not sufficed to pro- 

 cure us an insight into the true types of the structure. The 

 method applied in the present series of investigations, viz. the 

 study of the parts in their anatomical connexion and their 



