CRUSTACEA ClASPIA. 28'.) 



Tho lateral lobes considerably project between the bases of the 2 pairs of 

 antenna', and ave (juite evenl_y rounded at the tip. Tlie postantenual corners 

 are produced to an acuminate, anteriorly curving jirocess. 



The anterior pairs of coxal plates are considerably deeper tlian the cor- 

 responding segments, and are, excepting the 1st pair, but very sparingly 

 setoiis at the distal edge. The 1st pair (see fig. 12) are much smaller than 

 the others and somewhat tapered distally, with the tip obliquely rounded 

 and fringed with a number of rather elongated setie. The 2 succeeding pairs 

 (see figs. 13, 14) are comparatively broad, and subrhomboidal in shape, with 

 the terminal edge obtusely rounded. The 4tli pair (see rig. 16) are still some- 

 what broader and but very slightly emarginated i)Osteriorly, with the pos- 

 terior expansion not, as usual, truncated, but terminating in a single angular 

 corner. 



The 3 posterior pairs of coxal plates successively decrease in size, the 

 antepenultimate pair (see fig. 17) being considerably larger than the otlier 

 2, though not nearly so deep as the anterior pairs 



The epimeral plates of the metasome are of moderate size and perfectly 

 smooth. The 1st pair, as usual, exhibit a rounded form, whereas the 2 suc- 

 ceeding pairs are almost rectangular. 



The urosome is comparatively short and stout, with a few small hairs 

 and spinules dorsally. 



The eyes (see fig. 2) have a somewhat unusual position, being placed 

 close to the edges of the lateral lobes of the cephalon, and also by this 

 character the present form acquires some habitual resemblance to the species 

 of the genus Podocerns. They are of moderate size and oval in form, with 

 the visual elements well developed and the pigment of a dark hue. 



The superior antenna^ (rig. 3) are rather slender, but not very much 

 elongated, scarcely exceeding twice the length of the cephalon. The 1st joint 

 of the peduncle is much the largest, being fully as long as the other 2 com- 

 bined, and, like the latter, is provided at the end with slender bristles. The 

 3rd joint is rather small, about half the length of the 2nd. The flagellum is 

 nearly as long as the peduncle, and composed of 7 articulations. The acces- 

 sory appendage is rather small, being about ^3 as long as the flagellum, and 

 4-articulate. 



The inferior antennae (fig. 4) are about the length of the superior, and 

 of quite normal structure, being, as the latter, clothed with scattered fascicles 

 of slender bristles. The 2 outer joints of the peduncle are simple c> lindric, 

 and successively diminish both in length and breadth. The flagellum dues 

 not attain the length of those joints combined, and is composed of 5 rather 

 slender articulations. 



'fus.-MaT. CTp. 197. IS 



