BY WILLI A.M A. IIASWELL, M.A,, B.SC. 107 



Crustacea." It is a member of the family Corophiidce, distin- 

 guished from Amphithoe, Suuamphithoe and JVcenia, among other 

 points, by tlie presence of an appendage on the superior antennae, 

 from Cerapus by the biramoas character of the posterior pleopoda, 

 and from Podowrus by the multi-articnlate flagella of both pairs of 

 antennae. The genus may be defined as follows : — Coxge not so 

 deep as the corresponding segments ; antennae both with multi- 

 articulate flagella, the superior pair with an appendage. Mandibles 

 palpigeroi:;s. Maxillipedes unguiculate, sub-pediform, with a squam- 

 iform process on the basos only. Gnaihopods sub-chelate, unequal, 

 posterior pair very large. Posterior pleopods biramous, the outer 

 ramus with slightly hooked spines and sti-aight hairs, the inner 

 with straight hairs only. Telson single, long, pointed. 



Harmonia crassipes has been found by Mr. Chilton in New 

 Zealand. 



XYIII. Cyrtophium. 



Of the Australian species which I have referred provisionally to 

 this genus, only one — viz., C minutum — really belongs to Dana's 

 genus Cyrtophium as defined by Spence Bate (Cat. Amphip., p. 

 273); G. dentatum, together with two species to be. described below, 

 differs from it in the superior antenna) having a short, multi- 

 articulate flagellum and a well-developed secondary appendage. C. 

 hystrix differs from the type species of Cyrtophium in the presence 

 of only five segments in the pleon. I gather from a remark made by 

 Spence Bate, (British Sessile-eyed Crustacea, p. 483) that the genus 

 Lcematophilus of Bruzelius is distinguished from Cyrtophium by 

 the absence of the second last pair of pleopods, and have pro- 

 visionally removed C. hystrix to that genus. For the species with 

 multi-articulate flagella and appendages to the superior antennae I 

 propose the name of Dexiocerella. Connecting them with the 

 typical species is C. parasiticum, which has the flagellum of the 

 lower antennae well developed and indistinctly multi-articulate, 

 but has no appendage to the superior antennae. 



