BRITISH HYDRACHNID^. 25 



Genus VIII. — Teutonia (Koenike). 

 1890. — F. Koenike, Archiv.f. Naturgesch., p. 75. 



The characteristics of this genus are : — Body soft skinned ; 

 legs well supplied with swimming hairs ; fourth pairs of feet without 

 claws. Three genital suckers on the inner edge of the genital 

 plates on either side of the genital fissure ; epimera in four groups; 

 palpi not chelate ; mandibles in two portions ; eyes wide apart. 



This genus, as has been already remarked, is very closely 

 allied to the Limfiesia—io much so, indeed, that it can easily be 

 mistaken for it; but it will be noticed in Figs. 7 — 8 that the 

 genital suckers are on the inner side of the plate, and not on the 

 plate itself, as is the case in Figs. 3 — 4 of Linmesia. The poste- 

 rior pair of epimera are also more square, as shown in Fig. 6. 

 The rostrum is also projected a little more forward, and the palpi 

 are attached to that part, much in the same manner as we shall 

 find in Sperchon (Kramer). In Limnesia will be noticed on the 

 fourth pair of feet, or rather the tarsi, a long spine projecting 

 outwards, which I have never seen in Teutonia. 



Teutonia prii?iaria (Koenike). 

 1890, — F. Koenike, Archiv.f. Naturgesch.^ pp. 76 — 80, PI. V. 

 This is, I believe, the only species known of this genus up to 

 the present time. It is pale yellow in colour, with brown mark- 

 ings. I first took it in 1893 at Bealings, Suffolk; but not having 

 at that time seen Koenike's paper, referred to above, I believed it 

 to be a strange species of Lim?iesia. In June, 1895, I took two 

 more specimens at the same place, and this year in North Wales 

 I took several more, so in all probabiUty it is fairly common ; but 

 I have never taken it in any of the usual collecting grounds round 

 London. It measures about i/25th of an inch in length. The 

 palpus has the same peg-like process which is always found on 

 Limnesia (see Fig. 9). 



EXPLANATION OF PLATE III. 



Limnesia longipalpis (Koch). 

 Fig. 1. — Dorsal surface. 

 ,, 2. — Ventral surface. 



