GAMMARIDEAN AMPHIPODA 215 



than antenna 2 (by the length of 2 flagellar articles) , and all members 

 of the type series (reexamined), except the figured holotype, cor- 

 respond. None of the present specimens, subadult females and males, 

 has the pectinal rows on article 2 of the third uropodal ramus but 

 faint indications of their presence are seen. Gnathopods of both sexes 

 differ in their medial and lateral aspects rather strongly and several 

 views contrasted to those drawn by Barnard (1962c) are included 

 herein. The second maxilla has the inner and outer plates attached 

 in tandem; the outer plate of maxilla 1 has only 6 spines, the size 

 and arrangement of which seem unusual but which are duplicated 

 in other species of stenothoids; the outer plate of the maxilliped is 

 obsolete, the slight projection that is present being hidden by a 

 spine, the inner plates being strongly fused at their bases but separated 

 for about half their theoretical lengths. 



Material. — goleta: Phyllospadix-pelv etiid grid, scarce (10 per 

 sq. m.). pt. dume: short brown algae, abundant (176 per sq. m.) ; 

 coralline algae, abundant (330 per sq. m.) ; green-brown algae, rare; 

 Egregia, rare. pt. fermin: Barnard station 23, October 21, 1949, 

 abundant in calcareous algae, corona del mar: Phyllospadix-coraWme 

 grid, rare (4 per sq. m.) ; calcareous worm tubes, rare; tunicate colonies 

 at base of Phyllospadix leaves, rare; tunicates and polychaete tubes, 

 rare, la jolla: sample 45-K-l (1). catalina island: "Velero" station 

 1370, shore, 4 specimens. 



Distribution. — Goleta to La Jolla, California, intertidal. 



Stenothoides burbanki, new species 



Figures 62, 63 



Diagnosis of male.- — Lateral cephalic lobe disymmetrically 

 sinuous, with a blunt point apically; eyes small, nearly round; epi- 

 stome forming acute keel on front of head, below which upper lip 

 projecting forward acutely as far as epistome; antennae short, first 

 with remarkably short, stout peduncle, article 2 slightly more than 

 one third as long as article 1, article 3 very short, bearing remnants 

 of partially articulated, poorly developed accessory flagellum; 

 gnathopod 1 simple, relatively stout, article 4 produced posteriorly 

 along posterior edge of article 5 in a blunt, spinose lobe, articles 

 5 and 6 equal in length, article 5 not lobed posteriorly, posterior 

 edge of article 6 acting as palm, bearing 3 large spines, middlemost 

 spine defining the theoretical palm by its apposition to apex of 



Figure 61. — Stenothoe estacola J. L. Barnard, male, 2.5 mm., station 46-G-10: a,b, mandible; 

 c,d, gnathopods 1, 2; e,f, maxillae 1, 2; g, maxilliped, palp terminally unflattened; h, 

 upper lip; t, outer lobe of maxilla 1. Female, 2.4 mm., station 47-B-3: /, uropod 3; k,l, 

 gnathopod 1, lateral and medial views; m, gnathopod 2; n, maxillipedal palp, flattened. 



280-102 0-69— 15 



