14 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 124 



stalk width 1.1; rostral plate length 1.4, width 0.9; fifth abdominal 

 somite width 7.3; telson length 3.9, width 5.3. 



Discussion.- — Cloridamiersi closely resembles C. verrucosa (Hansen) 

 in most features but shows several important differences, as follows: 

 (a) the eyes are of different shape, the stalk is not as long and is less 

 expanded laterally, and the broader cornea is set transversely on the 

 stalk; (b) there are no submedian carinae on the first five abdominal 

 somites, but they are present on the fourth and fifth somites in C. 

 verrucosa; (c) fewer abdominal carinae are armed (in C. verrucosa the 

 abdominal carinae of the fourth, fifth, and sixth somites are all pro- 

 vided with spines) ; and (d) the anterior lobe of the lateral process of 

 the fifth thoracic somite is spiniform in C. verrucosa, rounded in C. 

 miersi. 



The large eyes and elongate rostral plate will immediately dis- 

 tinguish this species from the others known from the western Indian 

 Ocean, C. clorida (Brooks), C. fallax (Bouvier), C. latreillei Eydoux 

 and Souleyet, and C. microphthalma (H. Milne-Edwards). 



Etymology. — The species is named for E. J. Miers, the British 

 carcinologist who made valuable early contributions to our knowledge 

 of the stomatopods. 



Distribution. — Known only from the type-locality, off the west 

 coast of Madagascar. 



Harpiosquilla Ilolthuis, 1964 



Four species, all from the Indo-West Pacific region, have been 

 assigned to this genus; all four occur in the western Indian Ocean. 

 Balss (1910) reported H. raphidea from off East Africa and Chopra 

 (1939) recorded H. annandalei from the Gulf of Oman. Two species, 

 H. harpax and one described as new, are reported herein. The following 

 key will serve to distinguish all of the species. 



Key to Species of Harpiosquilla 



1. Fifth thoracic somite with a lateral spine 2 



Fifth thoracic somite rounded laterally 3 



2. Submedian carinae of fifth abdominal somite armed posteriorly ; distal segment 



of uropodal exopod black with a white midrib . H. annandalei (Kemp, 1911) 

 Submedian carinae of fifth abdominal somite unarmed; distal segment of 

 uropodal exopod with inner half only dark, not black. 



H. raphidea (Fabricius, 1798) 



3. Carapace with median carina; first 5 abdominal somites with submedian 



carinae H. harpax (de Haan, 1844) 



Carapace lacking median carina; first 5 abdominal somites lacking submedian 

 carinae H. melanoura, new species 



