352 ME. J. R. HENDERSON — A CONTRIBUTION 



Genus Parattmoltjs, Miers. 



36. Pakatymoltjs sexspinosus, Miers. 



P. sexspinosus, Miers, ' Alert' Crust, p. 261, pi. xxvii. fig. B (1884). 



Tuticorin, a male specimen ( Thurston). 



Three spines are present on each antero-lateral margin of the carapace, the first 

 (preocular) and second obtuse, the third at the antero-lateral angle subacute and directed 

 forwards. The terminal joint of the antennal peduncle is greatly flattened and its margin 

 ciliated. Tlie carapace is finely pubescent. Length of carapace 8 mm., breadth 7 mm. 



Distribution. Torres Strait [Miers). 



Group Cyclometopa. 



Genus Atekgatis, De Haan. 



37. Atergatis integerrimus (Lamarck). ^ 



A. integermuns (Lam.), A. Milne-Edwards, Nouv. Arch. Mus. Hist. Nat. t. i. p. 235 (1865). 



(= A. subdivisus, Adams & White). 



Tuticorin, a series (Thurston) ; Ceylon [Haly, Nevill) ; Rameswaram, not uncommon 

 at low water under blocks of dead coral [J. R. S.). 



The carapace of a Tuticorin specimen measures 68 mm. in length and 104 mm. in 

 breadth. 



Uistriljntion. Eroni E. Africa to China and Japan. 



38. Atergatis eloridijs (Rumph.). 



A.floridus (Ruraph.), A. Milne-Edwards, Nouv. Arch. Mus. Hist. Nat. t. i. p. 243 (1865). 



E-ameswaram and Tuticorin (Thurston); Ceylon (Haly, Nevill); Rameswaram, 

 common on the reef and at low water (J. R. //.). 



The carapace of a specimen from Rameswaram measures il mm. in length and 58 mm. 

 in breadth. 



List rib ution. From the Red Sea and E. Africa to Japan, N. Australia, New Caledonia, 

 and Tahiti. 



39. Atergatis l^vigatus, A. Milne-Edw. 



A. Imvigatns, A. Milne-Edwards, Nouv. Arch. Mus. Hist. Nat. t. i. p. 24, pi. xv. fig. 4 (1865). 



Tuticorin, an adult female (Thurston). 



In this species the carapace is very convex both from side to side and from before 

 backwards. The antero-lateral margin terminates simply at its posterior end and is not 

 continued into a transverse ridge ; four closed and indistinct marginal fissures can be 

 made out, three of them situated rather close together on the posterior half of the margin. 

 The band is not carinated superiorly and the finger-tips are excavated ; the ambulatory 

 legs arc strongly carinated. It is regarded by Kossmann as a variety of A. roseus 

 ^ Riippell), but in the latter species, as described by A. Milne-Edwards, and in specimens 



