GALERUCINE BEETLES — BLAKE 261 



with the apex prolonged on one side into a spur, fifth joint shorter and 

 also spurred, sixth, seventh and eighth joints gradually thickening and 

 wider at apex, ninth much thickened with a longitudinal cavity below, 

 tenth also thick and pale, also with a long concavity beneath, eleventh 

 joint long, slender and pale, also with the tip dark. Prothorax almost 

 rectangidar, the sides only slightly rounded, the explanate margin 

 visible its entire length from above, a tooth at each angle; median 

 transverse sulcus shorter and less pronounced than usual in Neohrotica; 

 surface shining, finely punctate. Scutellum bicolored. Elytra with 

 prominent humeri and short intrahumeral sulcus, densely and con- 

 fusedly punctate, without costae, dark brown with pale margins and 

 apex, and pale along the basal margin, a large median roundish pale 

 spot on each el3^tron. Body beneath pale, the femora brownish, 

 tibiae and tarsi dark; middle tibiae of male excised; anterior coxal 

 cavities open, claws bifid. Length 4.8 mm.; width 2.2 mm. 



Type, male, USNM 66851, collected at Turrialba, Costa Rica, May 

 25, 1951, by O. L. Cartwi-ight. 



Remarks: This species is closely allied to D. pectinicornis (Baly). 

 The development of the antennal joints in the male is not quite so 

 extreme but similar, the excision of the middle tibiae the same, and 

 even the general color pattern very similar. 



Deinocladus fascicollis, new species 



Figure 13 



About 4 mm. in length, oblong oval, the pronotum with a trans- 

 verse sulcus, elytra shallowly and densely punctate, yellow brown with 

 a piceous head and antennae, a deep brown band across anterior half 

 of pronotum, elytra with a basal and apical piceous fascia, tibiae and 

 tarsi, breast and apex of abdomen piceous, in the male the antennal 

 joints much enlarged and the middle tibiae excised. 



Head with the interocular space about half width of head, occiput 

 rounded without depressions, densely punctate, frontal tubercles well 

 marked, a strong carina down lower front, on the sides punctate. 

 Antennae in the male (female unknown) long and distorted, second 

 and third joints very short, fourth joint as long as the first three 

 together, fifth to eighth joints becoming gradually wider with a pro- 

 longed outer spur at apex, ninth joint long and much widened, tenth 

 a little shorter and not so wide, eleventh long, narrow, all entirely 

 dark. Prothorax almost rectangular with slightly curved sides, a 

 transverse sulcus, surface distinctly punctate in places, shinmg yellow 

 brown with a broad brown fascia across anterior half not reaching 

 the side margins. Scutellum dark. Elytra broad towards apex, 

 densely punctate, with a tendency to being striate, humeri with a 

 short intrahumeral sulcus, yellow brown with a broad basal and apical 



