122 CRUSTACEANS OF THE 



is shallow, but the oblique lateral portions of the cervical 

 groove are wanting completely. The branchial regions 

 that are undivided, are separated by a shallow transverse 

 groove from the intestinal area, but the cardiac region 

 that is very slightly convex transversely, is confluent both 

 with the adjoining intestinal and branchial regions. The 

 two urogastric areolets are distinct, they are not contiguous 

 and slightly wrinkled. The mesogastric furrow dividing the 

 two little prominent epigastric lobes, is narrow and 

 continued neither on the front nor backwards, so that 

 the gastric region is undivided and, as has already been 

 observed, this region is also confluent with the branchial 

 lobes. The two epigastric lobes are wrinkled above, slightly 

 declivous towards the front, but confluent with the gastric 

 region as well backwards as laterally. The gastric region 

 as well as the branchial one slightly slope downwards 

 towards the orbits, but, except the epibranchial 

 lobes there is no trace of a postfrontal ridge. 

 The scarcely salient outer angles of the orbits, that pro- 

 ject somewhat less forward than the front, are almost 

 as far distant from one another as the cepha- 

 lothorax is long, the distance between them being 

 but very slightly shorter than the length of the cepbalo- 

 thorax. In a front- view of the cephalothorax (Fig. 14^), 

 the orbits show a very slight oblique direction ; they are 

 just as broad as the free border of the front and once 

 and a half as broad as high. They have an oval outline, 

 the finely crenulate lower margin is entire, without a notch 

 near the outer angle and the inner angle is triangular, 

 not at all prominent. The front is very narrow, the 

 free border measuring exactly one third the distance 

 between the extraorbital angles, and the front is about 

 half as high as the free border is broad. When the 

 carapace is looked at from above, the free border appears 

 divided by a median triangular emargination into two ar- 

 cuate lobes (Fig. 14''), but in a front-view (Fig. 14*) the 

 frontal margin appears almost straight. The front is slightly 



Notes Irotu the Leytleii ]Museuiu, "V'ol. XXI. 



