40 Dcrnicc P. Bishop MiiseiDii — Bulletin 



lateral teeth, the first three similar, the fiftli smaller, the fourth the smallest, 

 very slender and crowded toward the third. Lobe on basal antennal seg- 

 ment, low, rounded. Imier sulwrbital angle obtuse. 



Dorsal aspect of cheliped pubescent and granulate. Three spines on 

 inner margin of merus. Inner spine of carpus strong, two spines on outer 

 side of anterior margin, the lower very small, one spine on outer surface. 

 Four spines on nianus, t)ne at articulation of carpus, two on the inner 

 ridge of the upper surface and one on the outer ridge, the customary 

 distal spine of this ridge being suppressed ; three ridges on outer surface, 

 the upper of which is incompleted and forms the boundary of the pubes- 

 cent area ; below it the surface is smooth ; the second ridge is in line 

 with the space between the fingers, the lowest ridge is continued to the 

 extremity of the immovable finger. 



The merus of the swimming leg is armed below with a strong subdistal 

 spine while the propodus with a row of slender spines. The sixth segment 

 of the male abdomen has arcuate lateral margins, the terminal segment 

 is equilaterally triangular. Extreme length of the carapace of type male 

 8.2mm., width of same between tips of last (or posterior) lateral teeth 

 12.2 mm. 



C. loiii^ifroiis (A. Milne Edwards)'" is the only other species of the 

 some subsection of the subgenus Charybdis, which has just five antero- 

 lateral teeth : it has however, six elongate frontal teeth of nearly equal 

 size, the wrist and the palm are each armed with five teeth, and the spine 

 at the lateral angle of the carapace is the longest of that series. The 

 species is, moreover, larger and coarser than C. cookci. 



" Goniosuma loitgifroiis A. Milne Iidw;irds. Xouv. Arch. Miis. Hist. Nat., Paris, 

 vol. S, 1869, p. ISS, pi. 7, figs. 1-5. 



