ON A HEW SPECIES OF BEACIIYONYCHUS EEOM MEEGUT. 135 



DESCRIPTION OF PLATE XII. 



Fig. 1. ? Obclia bifurca, n. sp. 



2 & 3. Obelia Andersoni, n. sp. Calycles, magnified. 4. Gronotheca. 

 5. Campanularia raridentata, Alder. 

 0. Scrupoccllaria diadema, Busk. 

 7. Schizoporella spongites, Smitt, var. n. 8. Ooecium. 

 9-12. Buskia setigera, n. sp. 13. The opercular setss, showing the sub- 

 spiral arrangement. 



Oil a new Species of Brachyonyclius from the Mergui Archi- 

 pelago. By Hexby Waltee Bates, F.R.S., F.L.S. 



[Read 2nd December, 1886.] 

 Family Cababid^, subfam. Panag^ln^:. 

 Beachyonychus Andeesoke, n. sp. 



Allied to the Siamese species, B. laevipennis, Chaudoir, from 

 which it differs by its smaller size, its rather less rounded elytra, 

 and the fine punctuation of the base, as well as of the ninth and 

 external half of the eighth (lateral) interstices. Convex ; thorax 

 hexagonal, with the lateral angles rounded, sides explanate but 

 not reflexed ; elytra relatively short, ovate, more broadly ovate 

 than in the well-known Eudema angulation, F., striate-punctate, 

 with nearly plane interstices (rather more convex on the sides), 

 very finely alutaceous and impunctate, except at the base and 

 sides. The epistome is faintly rugose, the forehead coarsely in- 

 tricate-rugose, without trace of punctures ; the thorax closely 

 confluent-punctulate, more distantly punctured on the broadly 

 flattened margins. The elytra have each two transverse red 

 spots or fasciae ; the anterior extending from the third stria to 

 the lateral margin, and composed of elongate spots which are 

 shorter on the fifth and seventh interstices ; the posterior, much 

 more dentate, extending from the third to the eighth stria, and 

 composed of spots which project alternately in front and behind. 

 The prosternum, metathoracic episterna, and sides of the basal 

 ventral segments are sparsely and rather coarsely punctured. 



Length 25 millim. 



The species is intermediate between Bracliyonychus Icevipennis 

 and B. sublavis Chaudoir, both known only from Siam and 

 Cochin China. The genus contains only one other described 

 species, B. humeratus, which is also from Cochin China. 



Loc. Elphinstone Island. 



