6 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 27 



ASELLOTA 



PARASELLOIDEA 



MUNNIDAE 



Acanthomunna Beddard 

 Acanthomunna tannerensis, n. sp. 



(Plate 1) 

 Diagnosis: Body (except cephalon) covered with large spines which 

 appear to be jointed but are not. Body without pigment ; two and one- 

 half times as wide as head at widest point. Pleotelson at widest point 

 about two-thirds as wide as body, becoming abruptly narrow, ending in 

 slightly convex, arched margin with two posterolateral short spines. 

 Cephalon abruptly narrower than peraeon and with large non-stalked 

 eyes. All coxal plates visible in dorsal view except seventh, which is un- 

 der the upwardly bent pleotelson. Narrow stem connecting peraeon and 

 pleon. Peraeopods two to seven at least one and one-half times as long as 

 body and covered with many spines. Peraeopod one shorter than body 

 with many stout setae; modified for grasping. Dactylus of all peraeo- 

 pods with one large claw each. Antenna one shorter than body, ending 

 in seven articles of very nearly equal length. Second antenna about 

 twice length of body with about 40 flagellar articles. Maxilliped with 

 long palp and three coupling hooks on endite. Mandible with toothed 

 incisor and setal row of sensory setae; palp with three segments ending 

 in several long setae. Uropod very large with basal segment about as 

 long as width of pleotelson and with exopod and endopod about as long 

 as basal segment. (The type species figured was beginning to molt the 

 anterior part of its body) . 



Measurements: Holotype female 3.5 mm long. 



Type locality: 6833 (3) ; Tanner Canyon; 813 m; Jan. 29, 1960; 

 green mud and sand. Lat. 32° 37' 54"N, Long. 118° 58' 40"W. 

 Distribution: Known only from type locality. 



Affinities: Acanthomunna tannerensis is very much like A. hystrix 

 (Hansen, 1916) except that it has fewer articles on its first antenna and 

 a different setal pattern. 



Munna Kr0yer 

 Munna spinifrons Menzies and Barnard 



Munna spinifrons Menzies and Barnard, 1959, pp. 13, 14, fig 7. 

 Materials exa?nined: 6805(3) ; 6806(2). 



Distribution: About 220 m in Santa Cruz Canyon near the region 

 described by Menzies and Barnard ( 1959). 



