new BrachynroHS Crustacean. 537 



lateral mavf^in at tlje distal extrenilfcj of the eplbraiicliial 

 lobe, and a bluntly louudeJ tooth lies immediately below the 

 lateral furrow. 



Surface generally somewhat flattened, and covered, espe- 

 cially near the latenil and anterior margins, by very fine 

 flattened granules. Tiie most [)ro;ninent of the seveial areas 

 tire the rather swollen and rounded protogastric lobes, which 

 slope towards the front from a slight but definite ridge — the 

 epigastric line, — which extends transversely across their 

 middle. A similar ridge is seen in the Portunid genera 

 Scylla and Septimus. Behind the ])rotogastric lobes is the 

 inesogastric lobe, somewhat globular in shape below, and 

 rather indistinctly produced in front into a narrow bottle- 

 neck extension characteristic of this lobe; immediately 

 behind it is the small, rounded, and somewhat crescentic 

 urogastric lobe. Well-defined brancliio-cardiac furrows 

 bound the sides of the urogastric lobe and extend below it. 



The cervical furrow is well marked, and can be traced 

 between the mesogastric and urogastric lobes ; it then extends 

 upwards round the protogastric lobes, and outwards and up- 

 wards to the lateral margin near the outer orbital tooth or 

 spine. Immediately below the cervical furrow on the margin 

 is a small triangular lobe — the epibranchial, — followed above 

 by the rather prominent and subtriangular hepatic lobes. 

 Below the cervical furrow on each side are the oblonji- and 

 rounded mesobranchial lobes, bounded below by the lateral 

 furrow. 



Specimen In. 20781, viewed anteriorly, shows the front 

 produced downwards towards the epistome into a bluntly 

 rounded prominence. Below, the epistome is preserved only 

 on the right side, and in its posterior or lower part, which 

 is a narrow spine-like body with a broadly expanded outer 

 extremity ; the pointed inner extremity ends just below the 

 front, and appears to have been discontinuous with the lett 

 lialf. Below the front is a short, thick, subtriangular plate 

 (a), which no doubt is the basal joint of the anteiinule ; next 

 to it is a soin(3what rounded plate (a'), which is apparently 

 the basal joint of the antenna. The eye-socket is rather wide, 

 deeply excavated, and sunk well below the base of the outer 

 orbital spine. The pterygostomian plate is somewhat 

 displaced, but its inner margin is raised and narrowly 

 hovelled, the basal margin somewhat excavated ami with a 

 raised luirrow rim, and transversely across the lower part of 

 the plate extends a flatly rounded ridge. All that remains 

 of the third maxilliped is a displaced ischium (i), and this is 



