1916- ] M 



segments closely, the sides of the metasternum coarsely and more sparsely, 

 punctate. Length 11, breadth 3^ mm. 



Hah.: Ecuador, Sarayacu (Buckley). 



One specimen. Differs from its unicolorous allies in the black 

 head, antennae, and prothorax, serrate antennae, larger eyes, and 

 unarmed apices of the elytra, the prothorax more convex and sub- 

 angularly dilated at the sides at a little beyond the middle, the anterior 

 angles deflexed as in I. cJievrolati. 



{To be continued.) 



STUDIES IN HELOPHORINI. 

 BY D. SHARP, M.A., F.R.S, 



9.—HEL0PH0RUS (continued from Vol. LI, p. 277). 



13. — Helophorus exasperatus, sp. n. 



H. mulsanti persiniilis. Color sordidus, capite aeneo-nigro, thorace fusco- 

 testaceo, latera versus dilutiore, dorso suhaenescente, elytris fusco-testaceis vage 

 maeulatis ; fortiter sculpturatiis, elytris interstitiis alternatis suhelevatis, seto- 

 sellis ; antennis, palpis pedihusque testaceis. Long. -i mm. 



Quite similar in appearance to the smaller, darker variety of mulsanti, but 

 with the sculpture of the head and thorax rather coarser, and the thorax a 

 little differently shaped : in mulsanti the greatest width is before the middle ; 

 in exasperatus it is almost in the middle, and the lateral margin is broader. 

 The legs are scarcely so stout. 



Hah: Marocco, Esmir and Tetuan, 3 specimens (Walker). 



I have seen no specimens of nmlsanti except from Britain. As it 

 is variable it is not improbable that examples from southern Europe 

 may connect exasperatus with it. (Aedeagus, fig. 35.) 



14. — Helophorus arabicus, sp. n. 



Convexus, niger, elytris hrunneis, antennis, palpis pedibusque rufis, capite 

 thoraceque vix metallescentibus, hoc obsolete sculpturato, versus latera rufescente ; 

 elytris fortiter profundeque punctatis, interstitiis suh-elevatis. Long. 3-4 mm. 



In the colour, the convex form, and the sculpture of the elytra, this insect 

 bears some resemblance to small if. laticollis. Palpi short, the tei-minal joint a 

 good deal thickened, so as to approach the shape of that of Atracthelophorus. 

 Channel of the vertex wider in front. Thorax broad, rather short and convex, 

 median groove moderately broad and deep, sub-median a good deal sinuate, 

 sculpture obsolete, even the granixlation at the sides being indistinct. Elytra 

 not elongate, lateral margin rather strongly outstanding in the middle. 

 Beneath black, tianks of elytra moderately visible. 



