Mr. L. A. Bonadaile — Notes on Carides. 205 



XIV. — JVotes on Carides. By L. A. BORRADAILE, M.A., 



Lecturer on Zoology in the University of Cambridge ; 

 Fellow, Dean, and Lecturer of Sel wyn College. 



During the investigation of certain collections of prawns 

 from the Indo-Pacitic region I have arrived at the following 

 conclusions, which appear to be worth putting on record in a 

 preliminary statement. 



I. The Crangonoida. 



The bounds of this superfamily must be eidarged to admit 

 the genera Anchistioides, Paulson, 1875, Ampftvpahemon, 

 Nobili. 1901, and Hijmenocera, Latr. This addition involves 

 two concessions in the definition of the group : (1) if Anchi- 

 sfioides and Anqyhipakenxon are to be admitted, it can no 

 longer be stated that the mandible is always without incisor- 

 process ; (2) the inclusion of Ilymenocera makes it necessary 

 to allow the persistence of a small representative of the outer 

 lacinia of the maxilla. 



Ancliistioides and Amphipalcemon constitute a new family, 

 the AnchistioididfB, intermediate between tlie Crangonoida 

 and thf^ Pakemonoida. The princij^al characteristics of this 

 family are : (1) a well-developed, compressed, toothed ros- 

 trum ; (2) a short, thick, accessory fJagellum on the an- 

 tennule ; (3) a deeply cleft mandible without })alp ; (4) the 

 absence of " laciniie" from the maxilla ; (5) the absence of the 

 exopodite from the third maxilliped; (6) a,n ap2)e7idix interna 

 on the first abdominal limb ; (7) considerable variability in 

 the armature of the telson ; (8) a gill-formula consisting of 

 pleurobranchs for the legs, an arthrobranch for the third 

 maxilliped, and cpipodites (mastigobranchs) on the maxil- 

 lipeds. 



Hijmenocera is shown by its mouth-parts to belong to the 

 Gnatliophy llidae. The species described by Balss as H. cerat- 

 opldhahna deserves to become the type of a new genus. 1 

 have called this genus Pliyllognathia, and placed it also in 

 the Gnathophyllidse. The principal characteristics of that 

 family are now as follows : — (1) a compressed dentate ros- 

 trum ; (2) the outer flagellum of the antennule thick at the 

 base and cleft for a very short distance; (3) the mandible 

 simple, slender, curved, palpless ; (4) the inner " lacinia''^ of 

 the maxilla lost, the outer either lost or very small but still 

 cleft ; (5) the third maxilliped with exopodite, simple mastigo- 

 })ranch, and endopodite of four joints, some or all of which 



