THE CANADIAN ENTOMOLOGIST. 417 



D. cefitrastigma, nov. sp. 



Head black, mouth parts Havous, antennt« a trifle over lialf the 

 length of the body, black with the under side of the first few joints 

 fiavous, thorax flavous, transverse, depressed, bifoveate, scutel black, 

 elytra nearly parallel, not i)Ucate, flavous, transversely depressed at the 

 middle, a common sutural wedge-shaped piceous spot reaching to this 

 depression, and the suture very narrowly lined with black nearly to apex. 

 There is also a supplemental depression running from the shoulder 

 obliquely towards the median depression body. Beneath piceous, thorax 

 fiavous, legs flavous, tibiae and tarsi piceous. Length, 6 mm. 



One example, San Carlos, Costa Rica ; coll. Schild-Burgdorf. 



Joint 2 of the antenme is short, 3 more than twice as long, 4 shorter 

 than the preceding two ; the thorax is nearly twice as wide as long, 

 strongly sinuate at the sides behind ; the elytra are smooth, sparsely and 

 finely punctuate; the humeral umbone is prolonged into a sort of obsolete 

 ridge, which vanishes behind and gives the elytra a flat back in front, 

 with strongly declivous sides. 



Has the general appearance of a small, ill-developed siituralis Baly, 

 with the usual large rear black spot absent. 



D. castanea, nov. sp. 



Head rufous, piceous about the eyes and mouth parts; antenna about 

 the length ot the body, black, rufous at the base ; thorax rufous, trans- 

 verse, depressed, strongly bifoveate, scutel rufous piceous, elytra nearly 

 parallel, flavous, with a post median sutural, elongate rufous spot, on each 

 side, and a strong transverse median depression , surface finely and 

 sparsely punctulate ; body below piceous, thorax rufous, legs yellow, with 

 black tib'se and tarsi. Length, 6^ mm. 



One example, San Carlos, Costa Rica ; coll. Schild-Burgdoif. 



Antennae with joint 2 short, 3 more than twice its length, 4 shorter 

 than the preceding two, thorax much broader than long, very markedly 

 sinuate at the sides behind, elytra strongly depressed around the scutel 

 and with a well-marked humeral depression running from just inside the 

 shoulder knob, obliquely towards the median depression. 



I place the species near subimpressa Jac, from Costa Rica. 



(To be continued.) 



