ME. D. SHARP ON COLTDIID^ TEOM CETLOJiT. 117 



On some Colydiidse obtained by Mr. Lewis in Ceylon. By 

 David Sharp, M.B. (Communicated by Gteorge Lewis, P.L.S.) 



[Read 15th January, 1885.] 



(Plate VI.) 



Me. Lewis, on bis return from Japan, spent tbe winter of 1881-2 

 in Ceylon, and amassed during his few months' residence tbere a 

 most interesting collection of Coleoptera, amounting to nearly 

 1600 species. In tbis paper I bave described tbe new Colydiidse 

 met with by bim, and in order to mate tbe subject more useful, 

 I bave enumerated all tbe species, purporting to belong to tbe 

 family, bitberto described from tbis very interesting island. I 

 bave not, however, included in tbe list Diioma ricgicollis, Walk., 

 because it is not really a member of the Colydiidse. Mr. Lewis, 

 having examined tbe type in our National Collection, finds it to 

 be a species of Lyctus. 



Mr. Lewis met altogetber with tbirty species of tbe family, and 

 tbe total number enumerated in tbis paper is tbirty-nine, belong- 

 ing to twenty-six genera, two or three of wbicb are altogetber 

 doubtful. As no tborougb exploration bas been made of the 

 Coleopterous fauna of Ceylon, we may feel sure tbat tbis number 

 is but a small portion of wbat may be found in tbe island wben it 

 is completely investigated. 



Neotrichus serrattjs, n. sp. (Plate YI. fig. 1.) 



Cylindricus, fusco-niger, opacus, setulis sordide albidis erectis parce ad- 



spersus ; prothorace subquadrato, lateribus fortiter serratis, rude granulate ; 



elytris fortiter seriatim punctatis. Long. A\ millim. 



Antennse witb tbe penultimate joint very strongly transverse. 

 Tborax quite as long as broad, nearly parallel-sided, tbe surface 

 densely covered witb coarse granules, tbose at tbe sides projecting 

 as small tubercles, giving a serrate appearance, eacb of tbe lateral 

 tubercles bearing an outstanding seta ; a very indistinct broad 

 depression along tbe middle in front. Elytra witb quite regular 

 series of coarse punctures, and having, in certain positions, an 

 appearance of being finely tuberculate. Under surface quite dull, 

 veutral segments deeply and rather closely punctate ; tibise con- 

 spicuously hispid externally. 



Tbis species is readily distinguisbed from N. hispidus by the 



LINN. JOUEN. — ZOOLOGY, YOL. XIX. 10 



