AUSTKALIAN MALACOSTEACA. 187 



348. Alpheus brevirostris. 



Palcemon brevirostris, Olivier, Encycl., t. viii., p. 664, pi. 319, 

 fig. 4. 



Asphalius brevirostris, Roux, Memoires sur les Salicoques, 

 p. 22. 



Alpheus brevirostris, Milne-Edwards, Hist. Nat. Crust., t. i., 

 p. 350. 



Rostrum short and continued behind in the form of a small 

 simple crest. Anterior border of the orbits rounded and without 

 spine. Second joint of the internal antenna? more than twice as 

 long as the first. Squamous appendage of the external antennae 

 gradually narrowing towards the end, pointed, and passing con- 

 siderably beyond the peduncle of the internal antennae. Anterior 

 legs large and compressed. Large hand -the left ornamented 

 above with two small crests ; without crests on the external 

 surface, having the inferior border nearly acute, and terminated 

 by an immobile pointed finger, at the base of which is a circular 

 cavity which receives a tubercle of the mobile finger ; this last 

 finger very much compressed and very obtuse at the end. 

 Fingers of the other hand long, narrow, punctate, a little curved, 

 ornamented with hairs on their prehensile border, and leaving 

 between them a wide space. \_M.-E.~] 



Australia (Paris Museum). 



349. Alpheus villosus. 



Palcemon villosus, Olivier, Encycl., t. viii., p. 661. 

 Alpheus villosus, Milne-Edwards, Hist. Nat. Crust., t. ii., 

 p. 351. 



Body covered with a rather close clown. A small median 

 crest, armed with a median spine at the base of the rostrum 

 which is a little inflexed. A rudimentary spine on the anterior 

 border of the orbital cavities. Second joint of the internal 

 antenna? once and a half the length of the first joint. External 

 antennae with a large spine on the basal joint. Squamous appen- 

 dage very narrow and scarcely passing beyond the peduncle of 

 these organs ; lateral spine of the basal joint very long. Large 

 hand the right granular and very hairy above, a little twisted ; 



