LUTNES. 125 



segment as long as all the others together, deeply incised at the apex ; third segment 

 incised ; fourth also incised, but not deeply ; fifth segment as long as the fourth, finely 

 punctured. Ovipositor longer than half the abdomen. Spur on anterior tibise stout, 

 curved, one third of the length of the metatarsus ; that on the middle tibiae two thirds 

 of the length of the metatarsus, which is thickened and setose on the lower side, and 

 with the second joint also thickened; posterior tibial spur almost obsolete. Wings 

 hairy. Mesonotum with two carinas along the middle, which is hollow. A suture 

 separates the pleura from the sternum. 



In L. crassicornis the mesothorax is flat along its entire extent, but in L. dromedarius 

 it rises gradually from the pronotum to a peak, descending more abruptly on the other 

 side, the scutellum thus not being on a level with the metanotum, but sharply raised 

 above it. In other respects the species agree. 



The hairy eyes ally this genus to Caloseter (from Europe) and Solindenia (from the 

 Sandwich Islands). Caloseter has the female wingless, and the ovipositor is not 

 exserted, while the scutellum is broad at the base, and the front is not ridged at the 

 insertion of the antennas, the middle tarsi too not being setose. Solindenia may be 

 known from it by the second abdominal segment not being much longer than the 

 third, and transverse at the apex; the eyes are larger, and project more behind, and 

 there is a wide furrow over the mouth. 



• Synopsis of Species. 



1 (4). Thorax elevated into a peak above. 



2 (3) . Middle of flagellum testaceous ; ovipositor more than one half the 



length of abdomen ornaticornis. 



3 (2). Flagellum entirely black; ovipositor not half the length of the 



abdomen dromedarius. 



4 (1) . Thorax flat above. 



5 (6) . Flagellum with a testaceous ring in the middle ; abdomen distinctly 



longer than the head and thorax together ; ovipositor not one half 



the length of the abdomen longiventris. 



6 (5). Flagellum entirely black; abdomen not much longer than the head 



and thorax together; ovipositor more than half the length of the 



abdomen crassicornis. 



1. Lutnes ornaticornis. (Tab. VI. figg. 16, 16 a.) 



Niger ; antennarum basi et articulis 8°-10 m abdominisque basi testacois ; geniculis albidis ; alia fuscis, albo 



maculatis. £ . 

 Long. 5-6 millim. 



Hob. Panama, Volcan de Chiriqui 4000-6000 feet {Champion). 



The head, thorax, and apical half of abdomen are alutaceous ; the head (slightly), the 

 thorax in front of the scutellum, and the apex of the abdomen are covered with small, 

 glistening, white, distinctly separated hairs ; over the second and third pair of coxae is a 



