1922.] S. Kemp; Notes on Crustacea Decapoda. 2.6y 



any rate P. beaufortensis is in my opinion more suitably accom- 

 modated in Pontonides than in any other genus. 



P. maldivensis is not known to live in any particular associa- 

 tion ; P. beaufortensis was found on Gorgonians. 



Genus Balssia, nov. 



The remarkable species described by Balss under the name of 

 Amphipalaemon gasti possesses three pairs of terminal spines on 

 the telson and evidently does not belong to Amphipalaemon or to 

 the family Anchistioididae in which, according to Borradaile, 1 

 that genus is included. 



The species is no doubt an aberrant member of the subfamily 

 Pontoniinae and, in the rudimentary character of the exopods of 

 the maxillipeds, resembles Pontonides. It differs from this genus, 

 however, in many respects. Both carapace and abdomen are 

 sculptured ; the rostral crest extends to the posterior end of the 

 carapace and is armed with large teeth; on either side of the 

 carapace there is a supra-orbital ridge armed with three teeth and 

 further back there are two conspicuous tubercles placed one above 

 the other ; mid-dorsally on the first abdominal somite there is a 

 sharp forwardly directed tooth. There is a tubercle on the eye- 

 stalk and a lateral spine on the fifth abdominal somite. 



In the sculptured carapace and abdomen Balssia bears some 

 resemblance to Dasycaris, but it differs in the other points noted 

 above as well as in the rudimentary exopods of the maxillipeds. 



Balssia gasti (Balss). 



1921. Amphipalaemon gasti, Balss, Mitt. zool. Stat. Neapel XXII, p. 

 523, text-figs. 1-8. 



Balssia gasti is known from a single specimen only, obtained 

 in the Gulf of Naples on Cor allium rubrum. 



Genus Coutierea Nobili. 



1901. Coutierea, Nobili, Boll. Mus. Torino XVI, no. 415, |>. 4. 



This genus was established by Nobili for Coutiere's Corallio- 

 caris agassizi? a species based on a single specimen dredged in 94 

 fathoms in the vicinity of Barbadoes. The genus is readih 7 dis- 

 tinguished from all other Pontoniinae by the remarkable form of 

 the supra-orbital spines, which are broad and connate with the ros- 

 trum, concealing the eyes in dorsal view, by the huge antennal 

 spines and b>' the presence of a pterygostomian spine. In the 

 areolation of the carapace and abdomen Coutierea resembles Dasy- 

 caris and Balssia. The two latter genera, however, do not possess 

 the basal protuberance on the dactylus of the last three legs, which 

 is well marked in Coutierea, and they differ also in many other 

 respects. 



; Borradaile, Trans. Linn. Soc. (2) Zool. XVII, p 405 (1917). 

 * Coutiere, Bull. Mus. Paris VII, p. 115, text-fips. (k.joi). 



