273 



fere laevi ; elytris fortiter punctulato-striatis, striis baud 

 geminatim ordinatis, interstitiis convexis fortiter sat 

 crebre punctulatis; pygidio sat crebre minus fortiter (sed 

 in media parte fere laevi) punctulato ; tilnis anticis extus 

 tridentatis; tarsis posticis modicis, articulo basali quam 

 2"-^ sat breviori; coxis posticis sat brevibus sed quam met- 

 asternum nullo modo duplo brevioribus; segmento ven- 

 trali apicali postice vix emarginato. Long., 5 1.; lat., 



The only Platydesmus known to me in which the ant^n- 

 nal flabellum of the male consists of four joints. The alter- 

 nate interstices of the elytra are a trifle wider than the other 

 interstices but there is no real approximation to the kind of 

 elytral sculpture that distinguishes the group of genera in 

 which I have called the elytra '"geminate-striate." The scu- 

 tellum, as in some other species where I have used the term 

 "suhlcpvi," has only three or four punctures, generally near 

 the base. 



Queensland : Tambourine Mount. Sent to me by Mr. 

 French. 



Sericesthis. 



S. (Scitala) suturalis, Macl. The unique type of this 

 species in the Australian Museum is in very bad condition 

 having lost its antennae. There can however be no reason- 

 able doubt of its being a true Seincesthis closely allied to S. 

 pruinom, Dalm. It is however a good species readily dis- 

 tinguishable from pruinosa by LJie pronotum at its hind angles 

 expanded and distinctly upturned. 



S. (Scitala) pruinoseJla, Brenske. I can find no mention 

 of any character in the description of this species inconsis- 

 tent with its being a later name for S. s'lituralis, Macl. 



Neso. 

 I have to add another species to this genus. Tho follow- 

 ing table shows the distinctive characters of the five species 

 now known. The three species previously described by me 

 differ considerably inter se in the antennal sexual characters. 

 In usta, Blackb., the laminae of the male are straight and 

 about equal in length to the preceding joints together; in 

 yorkensis, Blackb., the laminae are distinctly longer and are 

 curved; in phinicolUs, Blackb. \ = flavipennis (Platydesmus), 

 Macl.] they are curved and still longer (well on to twice as 

 long as the preceding joints together). In nsta, moreover, 

 the elytra are constantly, — so far as I have observed, — of a 

 dark umber-brown colour, — in the other two, testaceous. The 

 new species described below is not very close to the others, 

 being much larger, with prothorax of different shape, pygi- 



