ZOOLOGICAL AND BOTANICAL ASSOCIATION. 1 93 



Rpecies hero given is Henrich Schaeffer's continuation of Koch's " Fauna 

 Germanica,"* and is here quoted : — 



Itea crassicornis, 



" T. alba, dorso subflavescens, antennis pedibusq ; crassis, Koch 

 Dtschl. Crust. Myr. u. Arachn. h. 36. n. 5. 



"Nearly the shape and size of Itea rosea (Philougria rosea), but tho 

 last ring of the tail (telson) short, and the tail appendages (schwanz- 

 gabel) shorter and thicker. The surface of the body-rings dull, and 

 very finely rippled, that of the last ring (schwanzringe) somewhat 

 glossy ; the three front (anterior?) (vordern) joints of the antennae short 

 and narrow at the base; tlie fourth, thick, somewhat long, enlarged into a 

 belly behind (das vierte dick, ziemlich lang, hinten bauchig erweitert). 

 The filament (Endglied) somewhat shorter than the fourth articulation; 

 conical, passing into a point, small, bristle-like, and point much drawn 

 out. 



" The head and antennae, body, tail, and legs, white, streaked on the 

 back with yellowish ; the track of the intestine brown. 



" Found in the neighbourhood of small water-cisterns, and other wet 

 places, — the borders of castle ponds, where it is somewhat common." 



The figure which accompanies this description is characteristic, 

 and, as has been before observed in treating of the genus Philougria, f 

 differs altogether from the other forms associated as Itea. The descrip- 

 tion of the antennae is very characteristic, bearing in mind that Koch 

 ha3 overlooked the existence of the first joint of the peduncle of the ex- 

 ternal antennae ; so that the joint described by him as the fourth is really 

 the fifth, or that on the form of which Brandt has founded the genus. 

 The habitat assigned to this species alone makes me hesitate, though 

 perchance it will be found that this discrepancy is more apparent than 

 reaL 



Itea crassicornis, or, at least, a species under this name, is also de- 

 scribed by A. M. Stein in his " Catalogue of the Crustacea and Myria- 

 poda of the Grisons," published in the " Annual Report of the Natural 

 History Society of the Grisons," 1855. I have not seen this notice, and 



• " Deutschlands Crustacoen, Myriapoden u: Arachnidenherausg: von Herr-Schaffer, 

 186,6." 



f " 1'roc Nat. Hist. Soc. Dublin," vol. ii., p. 112. 



