CHR YSOMELIDAE . 



185 



Head with vertex not very convex, and with a depression on central area ; 

 completely punctate, punctures on vertex smaller than those on interocular and 

 interantennal areas, where they coalesce to form a certain rugosity. Area 

 bounded by roots of antennae, central depression and labrum, more or less 

 delimited. Antennae reaching about middle of elytra, first segment thick, club- 

 shaped, long, but shorter than fourth, second very small, third about twice as 

 long as second, fourth about twice as long as third, fifth somewhat shorter than 

 fourth, sixth to eleventh segments about equal to each other. Prothorax much 

 broader than long, sides almost straight, slightly converging towards front, 

 sharing general contour of prothorax ; upper surface convex in centre, sloping 

 to sides and more so to front, fairly closely punctate, punctures being round and 

 having no tendency at all to become elongate or to coalesce with one another ; 

 posterior lateral angles right angles ; each corner furnished with a fine long seta. 

 Scutellum almost as broad as long, subpentagonal, with apex rounded, surface 

 closely punctate. Elytra slightly broader at base than prothorax, sides almost 

 parallel, somewhat narrowing towards apex ; surface closely punctate. On the 

 basal area on the inner side of the humerus there is a depression, on the inner 

 side of which is another depression ; these depressions are black, in many 

 examples, owing to a continuation of the black elytra! stripe referred to in the 

 short diagnosis above. 



Length, 4-6| mm. Type example, 6| mm. Cotype, 5|- mm. 



Type and cotype of S. cauta Wse. in the Deutsches Entomologisches 

 Museum. 



Type of S. annulipes Wse. in the same Museum. 



Upolu : Aleipata, iv.1924, 5 examples ; v. 1924, 1 example. Lalomanu, 

 xi.1924, 1 example. Apia, 4 and 10.iii.1924, 2 examples (Armstrong) ; iii.1924, 

 9 examples ; iv. 1924 and 1925, 2 examples ; v.1924, 3 examples, and v.1925, 

 3 examples ; x.1924, 1 example ; xii.1924, 3 examples ; ii.1925, 1 example. 

 Malololelei, 2,000 ft., ii.1924, 1 example ; iv.1924, 2 examples ; vi.1924, 4 

 examples. Leulumoega, 14.ix.1923, 9 examples (Swezey and Wilder). Muli- 

 fanua, 16.vii.1925, 1 example (Wilder). 



Manua : Tau, 27 .ix. 1923, 1 example (Swezey and Wilder). 



Savaii : Fagamalo, xi.1925, 6 examples. 



Tutuila : 1,100-1,200 ft., iv.1918, 1 example (Kellers). Pago Pago, 

 20.ix.1923, 2 examples (Swezey and Wilder); 16.iv.1924, 2 examples (Bryan). 

 Leone Rd., 7.ix.l923, 2 examples (Swezey and Wilder). 



