500 Mr. G. J. Arrow's Notes on Endomychid Coleoptem. 



the eighth, ninth and tenth rather transverse. The ter- 

 minal joint is pear-shaped. The antennae of the male axe 

 more massive than those of the female, and the front tibiae 

 of the same sex are still more curiously formed (Figs. 5, 10). 

 They are dilated internally from a little beyond the base 

 and the broad flange strongly reflexed in its terminal 

 part. The middle and hind tibiae are slender and the 

 former rather strongly curved beyond the base. 



S. malleicornis, sp. n. 



Testacea, tibiis tarsisque fuscis, antennis nigris, aiticulis diiabus 

 basalibus pallidis exceptis ; robusta, nitida, subtiliter baud dense 

 pubescens, pedibus longissimis, antennis parum longis, a.vticulo 

 ultimo fortiter transverse, praecedenti paulo transverse, 9° hand 

 longiori quam latiori; pronoto modice lato, crebre et minute punc- 

 tate, lateribus ante basin sinuatis, angulis posticis acutis ; elytrorum 

 humeris prominentibus ; abdomine subtus 6-segmentato : 



^, pedibus longioribus antennarunique articulo ultimo latis- 

 simo; segmento ventrali tertio postice leviter bilobato, 4 et 5 

 abbreviatis : 



2, segmento ventrali 4 abbreviate, 5 paulo producte. 



Long. 4 mm. ; lat. 2-5 mm. 



Philippine Is., Mindanao : Surigao, Kolambugan, Davao, 



Butuan, Iligan (C. S. Baker). 



This is a relatively large and solidly-built insect, the 

 elytra being broad at the shoulders and dilating distinctly 

 to beyond the middle. The legs are very slender and the 

 antennae of an entirely peculiar form. The first three 

 joints are elongate (especially the third), the succeeding 

 six about as long as they are broad, and the last two 

 strongly transverse, the terminal one produced internally, 

 especially in the male (Fig. 9). In the latter sex the third 

 ventral segment is emarginate in the middle and a little 

 produced on each side, and the last three segments are 

 very short. The eyes are also larger and closer together 

 than in the female. 



