150 DR. J, G. DE MAN ON THE PODOPHTHALMOTIS 



side, from these triangular internal orbital angles by a small 

 emargination, and is scarcely sinuated in tbe middle. Only a 

 trace of tbe usual mesial frontal furrow is visible. 



As already observed, tbe lateral margins are scarcely arcuate. 

 The anterO-lateral margins are a little shorter than the postero- 

 lateral and armed with three acute teeth. The first tooth, or 

 external orbital angle, is rather acute and prominent, and about 

 as large as the two following teeth together ; the second tooth, 

 only half as large as the first, is acute and directed straight 

 forward, and the third is the smallest of all and also acute. The 

 ant ero -lateral teeth are separated from one another by rather 

 deep, though narrow, incisions. The external margin of the last 

 antero-lateral tooth is prolonged backward, as a minutely granu- 

 lated line defining the jDOstero-lateral margin. 



The external antennae are short, scarcely reaching to the 

 external angles of the orbits ; their peduncle occupies the 

 internal canthus of the orbits. The first or basal joint scarcely 

 reaches the internal orbital angle, the second is the longest of 

 all, and the third is again a little shorter than the second. The 

 internal suborbital lobe is small and little prominent. The 

 inferior margin of the orbits is minutely crenulate and does not 

 unite with the external orbital angle, so that the orbits are 

 not completely closed externally, as in the genera Meiaplaa;, 

 Cyclograpsus, &c. The pterygostomian regions and the inflected 

 sides of the cephalothorax are covered with some small granules 

 and are a little hairy. The epistome is short and enlarged ; the 

 minutely granulated anterior margin of the buccal cavity is 

 broader anteriorly than posteriorly, and its lateral margins 

 are arcuate, and being slightly emarginate on each side of 

 the middle, it presents three rounded lobes. The external 

 maxillipeds are a little gaping; the ischium-joint is scarcely 

 twice as long as broad, its internal margin is slightly convex, its 

 external slightly concave. The merus-joint is a little shorter 

 than the ischium-joint and strongly auriculated, the external 

 distal angle being much prolc>nged transversely outwards. The 

 palpus is inserted on the anterior margin of the merus-joint, its 

 distance from the obtuse internal angle being a little less than 

 its distance from the rounded external angle ; between the point 

 •where the palpus is inserted and the obtuse internal angle, the 

 anterior margin of the joint is slightly emarginate. The exopodite 

 (exognathe, A. M.-Edw.) is extremely enlarged, being much 



