206 



Gen. 4. Andania, Boeck, 1870. 



Body short and pulpy, with broadly vaulted back, and less firm 

 integuments than in the preceding genera. Cephalon without any distinct 

 rostral projection, lateral corners somewhat projecting. Anterior pairs of 

 coxal plates less deep than in the other Stegocephalidee, and rapidly increasing 

 in size posteriorly, 4th pair much the largest, though not fully encompassing 

 the succeeding pair inferiorly. Eyes distinct, but without any trace of visual 

 elements. Antennae subequal in length, flagellum of the superior ones rather 

 slender. Epistome rounded in front. Anterior lip small and but sligthly 

 sinuated at the tip; posterior lip with the lateral lobes narrowly rounded, 

 with only a very small dentiform projection on the distal edge. Mandibles 

 extremely short and stout, cutting edge straight and simple, without any 

 trace of teeth. First pair of maxillae with the basal lobe rather broad, and 

 densely setous at the edge, masticatory lobe rounded at the tip, and armed 

 with strong denticulated spines, palp well-developed, distinctly biarticulate, 

 with the terminal joint rather large, slightly dilated distally, and armed 

 at the tip with short spines. Second pair of maxillae much smaller than 

 the 1st pair, inner lobe short and broad, strongly incurved, and having a 

 double series of ciliated setae on the edge, outer lobe comparatively small, 

 sublinear, apical spines simple, setiform. Maxillipeds rather strong, basal 

 lobe obliquely truncated at the tip, masticatory lobe not very large, rounded, 

 with a series of curved spinules on the inner edge, palp robust, rapidly 

 tapering distally. Gnathopoda rather dissimilar, the anterior ones being 

 much stronger than the posterior,, which are very slender. Penultimate pair 

 of pereiopoda with the basal joint laminarly expanded. Last pair of pereiopoda 

 somewhat shorter than the preceding pair, basal joint very large and laminar, 

 meral joint comparatively small. Last pair of uropoda with the rami narrow 

 mucronate and unarmed, outer ramus distinctly biarticulate. Telson very 

 small, triangular, entire. 



Remarks. In the restriction in which the genus is here taken, it is 

 chiefly distinguished by the structure of the mandibles, the cutting edge 

 of which is quite unarmed, by the well-developed palp of the 1st pair of 

 maxillae, and by the basal joint of the penultimate pair of pereiopoda being 

 laminarly expanded. It contains as yet but one species to be described in the 

 sequel; for none of the other forms referred to this genus by Boeck and other 

 authors, agrees with the type species in the features mentioned above. 



