240 PROCEEDINGS OF THE NATIONAL MUSEUM vol. us 



Remarks: In Jacoby's description he states that he has two speci- 

 mens. Only one is now at the British Museum and there is none in 

 the Bowditch collection. Jacoby described the antennae as having 

 the last two segments missing, which applies to the specimen in the 

 British Museum. The shallow notching of the middle tibiae is 

 more typical of the genus Platymorpha, but the thu-d antennal joint 

 is not so compressed as in that genus, and in this respect is similar 

 to that of Trichobrotica ruatanae (Jacoby) . 



Trichobrotica nigrosignata (Jacoby) 



Figure 17 



Diahrotica nigrosignata Jacoby, in Godman and Salvin, Biologia Centrali-Ameri- 

 cana, Coleoptera, vol. 6, pt. 1, p. 522, 1887. 



About 3.5 mm. in length, elongate oblong oval, shining, the elytra 

 very finely and not densely punctate, pale yellow with dark antennae 

 and dark tibiae and tarsi, and on each elytron three dark markings, 

 one from the humerus down the side neariy to the middle, another 

 short one from the base down the middle, and the third large spot 

 near the apex; middle tibiae of the male excised. 



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

 smoothly rounded, very finely punctate, no depression above the 

 frontal tubercles, a narrow carina down lower front. Antennae 

 long, dark brown, with the second and third joints short. Prothorax 

 almost as long as ^^^de with slightly rounded sides and a shallow 

 depression across lower half. Scutellum pale. Elytra narrowly oblong 

 and a little wider at apex, depressed, very finely punctate, shining, 

 pale yellow with three dark markings on each elytron : the first from 

 the humerus along the side to the middle, the second a very short 

 curved vitta from the middle of the base, and the third a large dark 

 spot near the apex. Body beneath pale, the femora pale, the tibiae 

 and tarsi dark. Claws appendiculate. Length 3.2-4.9 mm.; width 

 1.4-1.5 mm. 



Type, male, BMNH, and 4 paratypes, from San Geronimo, Guate- 

 mala, Champion collector. One specimen from San Isidro, Guate- 

 mala, 1600 ft.. Champion collector. 



Remarks: In two specimens the lateral spots are united along the 

 side. This species with its excised middle tibiae in the male and 

 appendiculate claws belongs rather in Trichobrotica than Diabrotica. 

 The short third antennal joint resembles that of T. ruatanae (Jacoby). 



Trichobrotica fenestrata, new species 



Figure 14 

 About 4 mm. in length, elongate oblong oval, shining, the prothorax 

 with a transverse scooped-out area in the lower half, elytra very finely 



